/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 09:40:44,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 09:40:44,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 09:40:44,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 09:40:44,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 09:40:44,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 09:40:44,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 09:40:44,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 09:40:44,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 09:40:44,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 09:40:44,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 09:40:44,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 09:40:44,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 09:40:44,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 09:40:44,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 09:40:44,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 09:40:44,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 09:40:44,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 09:40:44,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 09:40:44,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 09:40:44,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 09:40:44,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 09:40:44,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 09:40:44,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 09:40:44,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 09:40:44,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 09:40:44,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 09:40:44,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 09:40:44,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 09:40:44,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 09:40:44,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 09:40:44,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 09:40:44,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 09:40:44,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 09:40:44,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 09:40:44,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 09:40:44,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf [2020-11-12 09:40:44,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 09:40:44,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 09:40:44,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 09:40:44,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 09:40:44,708 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 09:40:44,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 09:40:44,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 09:40:44,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 09:40:44,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 09:40:44,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 09:40:44,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 09:40:44,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 09:40:44,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 09:40:44,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 09:40:44,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 09:40:44,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 09:40:44,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 09:40:44,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 09:40:44,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 09:40:44,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 09:40:44,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 09:40:44,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 09:40:44,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 09:40:44,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 09:40:44,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 09:40:44,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 09:40:44,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 09:40:44,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 09:40:44,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 09:40:44,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 09:40:44,715 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 09:40:45,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 09:40:45,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 09:40:45,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 09:40:45,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 09:40:45,128 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 09:40:45,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2020-11-12 09:40:45,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffd3b7bf/ab96ce5584c74807aa357e443b5867d8/FLAG1f5b5acf9 [2020-11-12 09:40:46,014 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 09:40:46,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2020-11-12 09:40:46,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffd3b7bf/ab96ce5584c74807aa357e443b5867d8/FLAG1f5b5acf9 [2020-11-12 09:40:46,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffd3b7bf/ab96ce5584c74807aa357e443b5867d8 [2020-11-12 09:40:46,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 09:40:46,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 09:40:46,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 09:40:46,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 09:40:46,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 09:40:46,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e8afee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46, skipping insertion in model container [2020-11-12 09:40:46,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 09:40:46,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 09:40:46,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 09:40:46,526 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 09:40:46,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 09:40:46,715 INFO L208 MainTranslator]: Completed translation [2020-11-12 09:40:46,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46 WrapperNode [2020-11-12 09:40:46,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 09:40:46,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 09:40:46,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 09:40:46,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 09:40:46,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 09:40:46,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 09:40:46,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 09:40:46,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 09:40:46,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... [2020-11-12 09:40:46,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 09:40:46,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 09:40:46,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 09:40:46,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 09:40:46,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 09:40:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-12 09:40:46,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-12 09:40:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-12 09:40:46,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-12 09:40:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 09:40:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 09:40:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 09:40:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 09:40:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 09:40:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 09:40:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 09:40:46,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 09:40:46,872 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 09:40:47,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 09:40:47,359 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-12 09:40:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:40:47 BoogieIcfgContainer [2020-11-12 09:40:47,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 09:40:47,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 09:40:47,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 09:40:47,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 09:40:47,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 09:40:46" (1/3) ... [2020-11-12 09:40:47,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4123cb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 09:40:47, skipping insertion in model container [2020-11-12 09:40:47,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:40:46" (2/3) ... [2020-11-12 09:40:47,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4123cb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 09:40:47, skipping insertion in model container [2020-11-12 09:40:47,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:40:47" (3/3) ... [2020-11-12 09:40:47,369 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2020-11-12 09:40:47,385 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 09:40:47,385 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 09:40:47,389 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 09:40:47,390 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 09:40:47,421 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,421 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,421 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,422 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,422 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,422 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,423 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,423 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,423 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,424 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,424 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,424 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,424 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,425 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,425 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,425 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,426 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,426 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,426 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,427 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,427 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,427 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,427 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,428 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,428 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,428 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,429 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,429 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,429 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,429 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,430 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,430 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,430 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,430 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,431 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,431 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,431 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,431 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,432 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,432 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,432 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,432 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,433 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,433 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,433 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,434 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,434 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,434 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,434 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,435 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,435 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,435 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,437 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,438 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,438 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,438 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,438 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,439 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,445 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,445 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,446 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,446 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,446 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,446 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:40:47,450 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 09:40:47,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-12 09:40:47,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 09:40:47,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 09:40:47,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 09:40:47,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 09:40:47,488 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 09:40:47,488 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 09:40:47,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 09:40:47,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 09:40:47,501 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2020-11-12 09:40:47,655 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:47,925 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 266ms [2020-11-12 09:40:47,931 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:47,944 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 6412 states, 5723 states have (on average 1.2081076358553207) internal successors, (6914), 6411 states have internal predecessors, (6914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:47,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 6412 states, 5723 states have (on average 1.2081076358553207) internal successors, (6914), 6411 states have internal predecessors, (6914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-12 09:40:47,966 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:47,967 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:47,968 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash 27863943, now seen corresponding path program 1 times [2020-11-12 09:40:47,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:47,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245162607] [2020-11-12 09:40:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:48,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245162607] [2020-11-12 09:40:48,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:40:48,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 09:40:48,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70084223] [2020-11-12 09:40:48,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 09:40:48,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:48,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 09:40:48,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-12 09:40:48,462 INFO L87 Difference]: Start difference. First operand has 6412 states, 5723 states have (on average 1.2081076358553207) internal successors, (6914), 6411 states have internal predecessors, (6914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:48,605 INFO L93 Difference]: Finished difference Result 3940 states and 4629 transitions. [2020-11-12 09:40:48,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 09:40:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2020-11-12 09:40:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:48,630 INFO L225 Difference]: With dead ends: 3940 [2020-11-12 09:40:48,630 INFO L226 Difference]: Without dead ends: 1540 [2020-11-12 09:40:48,632 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 09:40:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-11-12 09:40:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 922. [2020-11-12 09:40:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 842 states have (on average 1.4239904988123515) internal successors, (1199), 921 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1199 transitions. [2020-11-12 09:40:48,779 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1199 transitions. Word has length 28 [2020-11-12 09:40:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:48,779 INFO L481 AbstractCegarLoop]: Abstraction has 922 states and 1199 transitions. [2020-11-12 09:40:48,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1199 transitions. [2020-11-12 09:40:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-12 09:40:48,786 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:48,787 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:48,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 09:40:48,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:48,789 INFO L82 PathProgramCache]: Analyzing trace with hash 168146404, now seen corresponding path program 1 times [2020-11-12 09:40:48,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:48,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080191978] [2020-11-12 09:40:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:49,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080191978] [2020-11-12 09:40:49,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:40:49,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 09:40:49,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557994628] [2020-11-12 09:40:49,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 09:40:49,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 09:40:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 09:40:49,041 INFO L87 Difference]: Start difference. First operand 922 states and 1199 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:49,170 INFO L93 Difference]: Finished difference Result 1179 states and 1471 transitions. [2020-11-12 09:40:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 09:40:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2020-11-12 09:40:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:49,175 INFO L225 Difference]: With dead ends: 1179 [2020-11-12 09:40:49,176 INFO L226 Difference]: Without dead ends: 803 [2020-11-12 09:40:49,177 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-12 09:40:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-12 09:40:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 781. [2020-11-12 09:40:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 717 states have (on average 1.4546722454672245) internal successors, (1043), 780 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1043 transitions. [2020-11-12 09:40:49,202 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1043 transitions. Word has length 32 [2020-11-12 09:40:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:49,202 INFO L481 AbstractCegarLoop]: Abstraction has 781 states and 1043 transitions. [2020-11-12 09:40:49,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1043 transitions. [2020-11-12 09:40:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 09:40:49,204 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:49,204 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:49,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 09:40:49,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:49,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:49,205 INFO L82 PathProgramCache]: Analyzing trace with hash -470623983, now seen corresponding path program 1 times [2020-11-12 09:40:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:49,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095622318] [2020-11-12 09:40:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:49,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095622318] [2020-11-12 09:40:49,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:40:49,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 09:40:49,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488981215] [2020-11-12 09:40:49,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 09:40:49,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 09:40:49,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 09:40:49,361 INFO L87 Difference]: Start difference. First operand 781 states and 1043 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:49,484 INFO L93 Difference]: Finished difference Result 1609 states and 1963 transitions. [2020-11-12 09:40:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 09:40:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 09:40:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:49,491 INFO L225 Difference]: With dead ends: 1609 [2020-11-12 09:40:49,491 INFO L226 Difference]: Without dead ends: 1395 [2020-11-12 09:40:49,492 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:40:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-11-12 09:40:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 834. [2020-11-12 09:40:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 770 states have (on average 1.4376623376623376) internal successors, (1107), 833 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2020-11-12 09:40:49,520 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 36 [2020-11-12 09:40:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:49,521 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2020-11-12 09:40:49,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2020-11-12 09:40:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 09:40:49,522 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:49,523 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:49,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 09:40:49,523 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:49,524 INFO L82 PathProgramCache]: Analyzing trace with hash 661466183, now seen corresponding path program 2 times [2020-11-12 09:40:49,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:49,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593066422] [2020-11-12 09:40:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:49,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593066422] [2020-11-12 09:40:49,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:40:49,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 09:40:49,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875908253] [2020-11-12 09:40:49,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 09:40:49,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:49,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 09:40:49,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 09:40:49,658 INFO L87 Difference]: Start difference. First operand 834 states and 1107 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:49,826 INFO L93 Difference]: Finished difference Result 1148 states and 1503 transitions. [2020-11-12 09:40:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 09:40:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 09:40:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:49,831 INFO L225 Difference]: With dead ends: 1148 [2020-11-12 09:40:49,832 INFO L226 Difference]: Without dead ends: 892 [2020-11-12 09:40:49,832 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-11-12 09:40:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-11-12 09:40:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 860. [2020-11-12 09:40:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 796 states have (on average 1.434673366834171) internal successors, (1142), 859 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1142 transitions. [2020-11-12 09:40:49,855 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1142 transitions. Word has length 36 [2020-11-12 09:40:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:49,856 INFO L481 AbstractCegarLoop]: Abstraction has 860 states and 1142 transitions. [2020-11-12 09:40:49,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1142 transitions. [2020-11-12 09:40:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 09:40:49,857 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:49,857 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:49,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 09:40:49,857 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1267275225, now seen corresponding path program 3 times [2020-11-12 09:40:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:49,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598804689] [2020-11-12 09:40:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:50,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598804689] [2020-11-12 09:40:50,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:40:50,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 09:40:50,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493943786] [2020-11-12 09:40:50,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 09:40:50,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:50,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 09:40:50,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 09:40:50,039 INFO L87 Difference]: Start difference. First operand 860 states and 1142 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:50,199 INFO L93 Difference]: Finished difference Result 1268 states and 1575 transitions. [2020-11-12 09:40:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 09:40:50,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-11-12 09:40:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:50,204 INFO L225 Difference]: With dead ends: 1268 [2020-11-12 09:40:50,205 INFO L226 Difference]: Without dead ends: 854 [2020-11-12 09:40:50,205 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:40:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-11-12 09:40:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 834. [2020-11-12 09:40:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 770 states have (on average 1.4428571428571428) internal successors, (1111), 833 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1111 transitions. [2020-11-12 09:40:50,234 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1111 transitions. Word has length 36 [2020-11-12 09:40:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:50,234 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1111 transitions. [2020-11-12 09:40:50,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1111 transitions. [2020-11-12 09:40:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 09:40:50,236 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:50,236 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:50,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 09:40:50,237 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:50,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:50,237 INFO L82 PathProgramCache]: Analyzing trace with hash -733270170, now seen corresponding path program 1 times [2020-11-12 09:40:50,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:50,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977093329] [2020-11-12 09:40:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:50,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977093329] [2020-11-12 09:40:50,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411810335] [2020-11-12 09:40:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:50,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 09:40:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:50,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:50,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:50,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:50,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 09:40:50,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461800518] [2020-11-12 09:40:50,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 09:40:50,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:50,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 09:40:50,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-12 09:40:50,680 INFO L87 Difference]: Start difference. First operand 834 states and 1111 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:50,889 INFO L93 Difference]: Finished difference Result 1104 states and 1398 transitions. [2020-11-12 09:40:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-12 09:40:50,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 09:40:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:50,896 INFO L225 Difference]: With dead ends: 1104 [2020-11-12 09:40:50,896 INFO L226 Difference]: Without dead ends: 890 [2020-11-12 09:40:50,896 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-12 09:40:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-11-12 09:40:50,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 832. [2020-11-12 09:40:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 768 states have (on average 1.4427083333333333) internal successors, (1108), 831 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1108 transitions. [2020-11-12 09:40:50,932 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1108 transitions. Word has length 41 [2020-11-12 09:40:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:50,935 INFO L481 AbstractCegarLoop]: Abstraction has 832 states and 1108 transitions. [2020-11-12 09:40:50,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1108 transitions. [2020-11-12 09:40:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 09:40:50,936 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:50,937 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:51,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-12 09:40:51,152 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1717865532, now seen corresponding path program 2 times [2020-11-12 09:40:51,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:51,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968330244] [2020-11-12 09:40:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:51,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968330244] [2020-11-12 09:40:51,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229051923] [2020-11-12 09:40:51,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:51,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:40:51,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:51,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 09:40:51,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:51,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:51,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:51,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:51,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-11-12 09:40:51,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850238079] [2020-11-12 09:40:51,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 09:40:51,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:51,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 09:40:51,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-12 09:40:51,413 INFO L87 Difference]: Start difference. First operand 832 states and 1108 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:51,747 INFO L93 Difference]: Finished difference Result 1663 states and 1992 transitions. [2020-11-12 09:40:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 09:40:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 09:40:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:51,752 INFO L225 Difference]: With dead ends: 1663 [2020-11-12 09:40:51,753 INFO L226 Difference]: Without dead ends: 929 [2020-11-12 09:40:51,753 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:40:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-11-12 09:40:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 846. [2020-11-12 09:40:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 782 states have (on average 1.4398976982097187) internal successors, (1126), 845 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1126 transitions. [2020-11-12 09:40:51,776 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1126 transitions. Word has length 41 [2020-11-12 09:40:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:51,777 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1126 transitions. [2020-11-12 09:40:51,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1126 transitions. [2020-11-12 09:40:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 09:40:51,778 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:51,778 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:51,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:51,992 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 376014513, now seen corresponding path program 1 times [2020-11-12 09:40:51,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:51,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933096731] [2020-11-12 09:40:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:52,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933096731] [2020-11-12 09:40:52,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946593205] [2020-11-12 09:40:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:52,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-12 09:40:52,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:52,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:52,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:52,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:52,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-12 09:40:52,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634408957] [2020-11-12 09:40:52,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-12 09:40:52,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:52,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-12 09:40:52,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-12 09:40:52,210 INFO L87 Difference]: Start difference. First operand 846 states and 1126 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:52,456 INFO L93 Difference]: Finished difference Result 1217 states and 1597 transitions. [2020-11-12 09:40:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 09:40:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 09:40:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:52,463 INFO L225 Difference]: With dead ends: 1217 [2020-11-12 09:40:52,463 INFO L226 Difference]: Without dead ends: 961 [2020-11-12 09:40:52,463 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:40:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-11-12 09:40:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 851. [2020-11-12 09:40:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 787 states have (on average 1.4447268106734434) internal successors, (1137), 850 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1137 transitions. [2020-11-12 09:40:52,515 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1137 transitions. Word has length 41 [2020-11-12 09:40:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:52,515 INFO L481 AbstractCegarLoop]: Abstraction has 851 states and 1137 transitions. [2020-11-12 09:40:52,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1137 transitions. [2020-11-12 09:40:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 09:40:52,516 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:52,517 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:52,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:52,727 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:52,728 INFO L82 PathProgramCache]: Analyzing trace with hash 558735100, now seen corresponding path program 1 times [2020-11-12 09:40:52,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:52,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596453738] [2020-11-12 09:40:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:52,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596453738] [2020-11-12 09:40:52,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393536910] [2020-11-12 09:40:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:52,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 09:40:53,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:53,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:53,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:53,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:53,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2020-11-12 09:40:53,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919907402] [2020-11-12 09:40:53,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 09:40:53,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:53,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 09:40:53,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:40:53,083 INFO L87 Difference]: Start difference. First operand 851 states and 1137 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:53,305 INFO L93 Difference]: Finished difference Result 1544 states and 1905 transitions. [2020-11-12 09:40:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-12 09:40:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 09:40:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:53,312 INFO L225 Difference]: With dead ends: 1544 [2020-11-12 09:40:53,312 INFO L226 Difference]: Without dead ends: 1302 [2020-11-12 09:40:53,313 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:40:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-11-12 09:40:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 861. [2020-11-12 09:40:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 797 states have (on average 1.4416562107904642) internal successors, (1149), 860 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1149 transitions. [2020-11-12 09:40:53,338 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1149 transitions. Word has length 46 [2020-11-12 09:40:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:53,339 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1149 transitions. [2020-11-12 09:40:53,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1149 transitions. [2020-11-12 09:40:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 09:40:53,341 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:53,341 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:53,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:53,556 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash 735627068, now seen corresponding path program 2 times [2020-11-12 09:40:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:53,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262935109] [2020-11-12 09:40:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:53,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262935109] [2020-11-12 09:40:53,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291345281] [2020-11-12 09:40:53,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:53,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:40:53,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 09:40:53,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:53,856 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:53,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:53,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:53,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-12 09:40:53,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314033954] [2020-11-12 09:40:53,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 09:40:53,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:53,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 09:40:53,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-12 09:40:53,930 INFO L87 Difference]: Start difference. First operand 861 states and 1149 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:54,206 INFO L93 Difference]: Finished difference Result 1240 states and 1561 transitions. [2020-11-12 09:40:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-12 09:40:54,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 09:40:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:54,212 INFO L225 Difference]: With dead ends: 1240 [2020-11-12 09:40:54,212 INFO L226 Difference]: Without dead ends: 1026 [2020-11-12 09:40:54,213 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-11-12 09:40:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-11-12 09:40:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 872. [2020-11-12 09:40:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 808 states have (on average 1.438118811881188) internal successors, (1162), 871 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1162 transitions. [2020-11-12 09:40:54,238 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1162 transitions. Word has length 46 [2020-11-12 09:40:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:54,239 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1162 transitions. [2020-11-12 09:40:54,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1162 transitions. [2020-11-12 09:40:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 09:40:54,241 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:54,241 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:54,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-12 09:40:54,455 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:54,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1108204526, now seen corresponding path program 3 times [2020-11-12 09:40:54,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:54,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025461106] [2020-11-12 09:40:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:54,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025461106] [2020-11-12 09:40:54,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698671884] [2020-11-12 09:40:54,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:54,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-12 09:40:54,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:54,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-12 09:40:54,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:54,721 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:54,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:54,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:54,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-12 09:40:54,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554028913] [2020-11-12 09:40:54,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 09:40:54,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:54,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 09:40:54,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-12 09:40:54,755 INFO L87 Difference]: Start difference. First operand 872 states and 1162 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:55,154 INFO L93 Difference]: Finished difference Result 1759 states and 2113 transitions. [2020-11-12 09:40:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 09:40:55,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-12 09:40:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:55,160 INFO L225 Difference]: With dead ends: 1759 [2020-11-12 09:40:55,160 INFO L226 Difference]: Without dead ends: 1025 [2020-11-12 09:40:55,162 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:40:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-11-12 09:40:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 872. [2020-11-12 09:40:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 808 states have (on average 1.431930693069307) internal successors, (1157), 871 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1157 transitions. [2020-11-12 09:40:55,193 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1157 transitions. Word has length 46 [2020-11-12 09:40:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:55,193 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1157 transitions. [2020-11-12 09:40:55,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1157 transitions. [2020-11-12 09:40:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 09:40:55,195 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:55,195 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:55,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:55,409 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1319926319, now seen corresponding path program 4 times [2020-11-12 09:40:55,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:55,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949000876] [2020-11-12 09:40:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:55,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949000876] [2020-11-12 09:40:55,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675237838] [2020-11-12 09:40:55,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:55,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:40:55,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:55,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 09:40:55,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:55,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:55,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:55,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:55,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-12 09:40:55,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147187571] [2020-11-12 09:40:55,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-12 09:40:55,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:55,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-12 09:40:55,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-12 09:40:55,685 INFO L87 Difference]: Start difference. First operand 872 states and 1157 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:56,072 INFO L93 Difference]: Finished difference Result 1645 states and 1995 transitions. [2020-11-12 09:40:56,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 09:40:56,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 09:40:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:56,077 INFO L225 Difference]: With dead ends: 1645 [2020-11-12 09:40:56,077 INFO L226 Difference]: Without dead ends: 1094 [2020-11-12 09:40:56,078 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-11-12 09:40:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-11-12 09:40:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 886. [2020-11-12 09:40:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 822 states have (on average 1.4355231143552312) internal successors, (1180), 885 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1180 transitions. [2020-11-12 09:40:56,103 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1180 transitions. Word has length 51 [2020-11-12 09:40:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:56,103 INFO L481 AbstractCegarLoop]: Abstraction has 886 states and 1180 transitions. [2020-11-12 09:40:56,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1180 transitions. [2020-11-12 09:40:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 09:40:56,104 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:56,104 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:56,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:56,320 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:56,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1131209383, now seen corresponding path program 5 times [2020-11-12 09:40:56,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:56,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268944841] [2020-11-12 09:40:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:56,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268944841] [2020-11-12 09:40:56,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875380519] [2020-11-12 09:40:56,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:56,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:40:56,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-12 09:40:56,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:56,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:56,559 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:56,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:56,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-11-12 09:40:56,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130180123] [2020-11-12 09:40:56,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 09:40:56,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:56,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 09:40:56,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-12 09:40:56,567 INFO L87 Difference]: Start difference. First operand 886 states and 1180 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:57,036 INFO L93 Difference]: Finished difference Result 1793 states and 2148 transitions. [2020-11-12 09:40:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 09:40:57,036 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 09:40:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:57,041 INFO L225 Difference]: With dead ends: 1793 [2020-11-12 09:40:57,041 INFO L226 Difference]: Without dead ends: 1059 [2020-11-12 09:40:57,042 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-11-12 09:40:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-11-12 09:40:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 870. [2020-11-12 09:40:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 806 states have (on average 1.4317617866004964) internal successors, (1154), 869 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1154 transitions. [2020-11-12 09:40:57,065 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1154 transitions. Word has length 51 [2020-11-12 09:40:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:57,066 INFO L481 AbstractCegarLoop]: Abstraction has 870 states and 1154 transitions. [2020-11-12 09:40:57,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1154 transitions. [2020-11-12 09:40:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 09:40:57,067 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:57,067 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:57,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-12 09:40:57,280 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:57,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1873386279, now seen corresponding path program 6 times [2020-11-12 09:40:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:57,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88183639] [2020-11-12 09:40:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:57,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88183639] [2020-11-12 09:40:57,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779768985] [2020-11-12 09:40:57,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:57,541 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-12 09:40:57,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:57,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 09:40:57,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:57,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:57,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:57,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:57,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2020-11-12 09:40:57,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016254197] [2020-11-12 09:40:57,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:40:57,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:57,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:40:57,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:40:57,627 INFO L87 Difference]: Start difference. First operand 870 states and 1154 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:57,946 INFO L93 Difference]: Finished difference Result 1611 states and 1979 transitions. [2020-11-12 09:40:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 09:40:57,947 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 09:40:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:57,955 INFO L225 Difference]: With dead ends: 1611 [2020-11-12 09:40:57,955 INFO L226 Difference]: Without dead ends: 1369 [2020-11-12 09:40:57,956 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:40:57,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2020-11-12 09:40:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 880. [2020-11-12 09:40:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 816 states have (on average 1.428921568627451) internal successors, (1166), 879 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1166 transitions. [2020-11-12 09:40:57,984 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1166 transitions. Word has length 56 [2020-11-12 09:40:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:57,985 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 1166 transitions. [2020-11-12 09:40:57,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1166 transitions. [2020-11-12 09:40:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 09:40:57,986 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:57,986 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:58,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:58,199 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:58,200 INFO L82 PathProgramCache]: Analyzing trace with hash 797709159, now seen corresponding path program 7 times [2020-11-12 09:40:58,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:58,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578616246] [2020-11-12 09:40:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:58,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578616246] [2020-11-12 09:40:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550746720] [2020-11-12 09:40:58,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:58,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 09:40:58,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:58,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:58,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:58,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:58,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 09:40:58,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422354198] [2020-11-12 09:40:58,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 09:40:58,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:58,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 09:40:58,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:40:58,543 INFO L87 Difference]: Start difference. First operand 880 states and 1166 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:58,918 INFO L93 Difference]: Finished difference Result 1300 states and 1625 transitions. [2020-11-12 09:40:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-12 09:40:58,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 09:40:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:58,926 INFO L225 Difference]: With dead ends: 1300 [2020-11-12 09:40:58,926 INFO L226 Difference]: Without dead ends: 1058 [2020-11-12 09:40:58,928 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-11-12 09:40:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-11-12 09:40:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 903. [2020-11-12 09:40:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 839 states have (on average 1.4243146603098926) internal successors, (1195), 902 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1195 transitions. [2020-11-12 09:40:58,949 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1195 transitions. Word has length 56 [2020-11-12 09:40:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:58,949 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1195 transitions. [2020-11-12 09:40:58,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1195 transitions. [2020-11-12 09:40:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 09:40:58,951 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:58,951 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:40:59,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-12 09:40:59,166 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:40:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:40:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash 423479847, now seen corresponding path program 8 times [2020-11-12 09:40:59,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:40:59,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406700949] [2020-11-12 09:40:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:40:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:40:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:59,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406700949] [2020-11-12 09:40:59,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477583328] [2020-11-12 09:40:59,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:40:59,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:40:59,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:40:59,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 09:40:59,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:40:59,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:40:59,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:40:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:40:59,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:40:59,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-12 09:40:59,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160255336] [2020-11-12 09:40:59,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 09:40:59,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:40:59,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 09:40:59,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:40:59,459 INFO L87 Difference]: Start difference. First operand 903 states and 1195 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:40:59,889 INFO L93 Difference]: Finished difference Result 1698 states and 2057 transitions. [2020-11-12 09:40:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 09:40:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 09:40:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:40:59,894 INFO L225 Difference]: With dead ends: 1698 [2020-11-12 09:40:59,894 INFO L226 Difference]: Without dead ends: 1147 [2020-11-12 09:40:59,895 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2020-11-12 09:40:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-11-12 09:40:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 917. [2020-11-12 09:40:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 853 states have (on average 1.4279015240328252) internal successors, (1218), 916 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1218 transitions. [2020-11-12 09:40:59,917 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1218 transitions. Word has length 56 [2020-11-12 09:40:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:40:59,917 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1218 transitions. [2020-11-12 09:40:59,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:40:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1218 transitions. [2020-11-12 09:40:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-12 09:40:59,918 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:40:59,918 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:00,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-12 09:41:00,132 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:00,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1420351747, now seen corresponding path program 9 times [2020-11-12 09:41:00,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:00,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125181545] [2020-11-12 09:41:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:00,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125181545] [2020-11-12 09:41:00,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599787851] [2020-11-12 09:41:00,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:00,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-12 09:41:00,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:00,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-12 09:41:00,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:00,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:00,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:00,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:00,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-12 09:41:00,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118398907] [2020-11-12 09:41:00,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-12 09:41:00,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:00,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-12 09:41:00,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-12 09:41:00,380 INFO L87 Difference]: Start difference. First operand 917 states and 1218 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:00,842 INFO L93 Difference]: Finished difference Result 1610 states and 2018 transitions. [2020-11-12 09:41:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 09:41:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-11-12 09:41:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:00,847 INFO L225 Difference]: With dead ends: 1610 [2020-11-12 09:41:00,847 INFO L226 Difference]: Without dead ends: 1074 [2020-11-12 09:41:00,847 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:41:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-11-12 09:41:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 903. [2020-11-12 09:41:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 839 states have (on average 1.4243146603098926) internal successors, (1195), 902 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1195 transitions. [2020-11-12 09:41:00,867 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1195 transitions. Word has length 56 [2020-11-12 09:41:00,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:00,867 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1195 transitions. [2020-11-12 09:41:00,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1195 transitions. [2020-11-12 09:41:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 09:41:00,868 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:00,868 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:01,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-12 09:41:01,082 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 172841916, now seen corresponding path program 10 times [2020-11-12 09:41:01,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:01,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601359555] [2020-11-12 09:41:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:01,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601359555] [2020-11-12 09:41:01,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398600846] [2020-11-12 09:41:01,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:01,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:01,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:01,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 09:41:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:01,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:01,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:01,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:01,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 09:41:01,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487301066] [2020-11-12 09:41:01,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 09:41:01,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:01,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 09:41:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:41:01,435 INFO L87 Difference]: Start difference. First operand 903 states and 1195 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:01,815 INFO L93 Difference]: Finished difference Result 1331 states and 1663 transitions. [2020-11-12 09:41:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 09:41:01,815 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 09:41:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:01,820 INFO L225 Difference]: With dead ends: 1331 [2020-11-12 09:41:01,820 INFO L226 Difference]: Without dead ends: 1089 [2020-11-12 09:41:01,821 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2020-11-12 09:41:01,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-11-12 09:41:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 917. [2020-11-12 09:41:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 853 states have (on average 1.422039859320047) internal successors, (1213), 916 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1213 transitions. [2020-11-12 09:41:01,839 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1213 transitions. Word has length 61 [2020-11-12 09:41:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:01,840 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1213 transitions. [2020-11-12 09:41:01,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1213 transitions. [2020-11-12 09:41:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 09:41:01,841 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:01,841 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:02,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-12 09:41:02,055 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:02,056 INFO L82 PathProgramCache]: Analyzing trace with hash -201387396, now seen corresponding path program 11 times [2020-11-12 09:41:02,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:02,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686690160] [2020-11-12 09:41:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:02,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686690160] [2020-11-12 09:41:02,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634076739] [2020-11-12 09:41:02,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:02,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-12 09:41:02,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:02,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 09:41:02,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:02,305 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:02,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:02,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:02,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 09:41:02,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076661970] [2020-11-12 09:41:02,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 09:41:02,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:02,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 09:41:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:41:02,340 INFO L87 Difference]: Start difference. First operand 917 states and 1213 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:02,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:02,803 INFO L93 Difference]: Finished difference Result 1335 states and 1675 transitions. [2020-11-12 09:41:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 09:41:02,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 09:41:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:02,808 INFO L225 Difference]: With dead ends: 1335 [2020-11-12 09:41:02,808 INFO L226 Difference]: Without dead ends: 1121 [2020-11-12 09:41:02,809 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2020-11-12 09:41:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-11-12 09:41:02,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 931. [2020-11-12 09:41:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 867 states have (on average 1.42560553633218) internal successors, (1236), 930 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1236 transitions. [2020-11-12 09:41:02,828 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1236 transitions. Word has length 61 [2020-11-12 09:41:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:02,828 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1236 transitions. [2020-11-12 09:41:02,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1236 transitions. [2020-11-12 09:41:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 09:41:02,830 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:02,830 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:03,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:03,045 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2045218990, now seen corresponding path program 12 times [2020-11-12 09:41:03,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:03,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884409800] [2020-11-12 09:41:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:03,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884409800] [2020-11-12 09:41:03,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142201905] [2020-11-12 09:41:03,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:03,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-12 09:41:03,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:03,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-12 09:41:03,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:03,312 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:03,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:03,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:03,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-12 09:41:03,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654681997] [2020-11-12 09:41:03,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-12 09:41:03,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:03,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-12 09:41:03,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-11-12 09:41:03,368 INFO L87 Difference]: Start difference. First operand 931 states and 1236 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:03,892 INFO L93 Difference]: Finished difference Result 1640 states and 2054 transitions. [2020-11-12 09:41:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 09:41:03,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 09:41:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:03,898 INFO L225 Difference]: With dead ends: 1640 [2020-11-12 09:41:03,898 INFO L226 Difference]: Without dead ends: 1104 [2020-11-12 09:41:03,898 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:41:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-11-12 09:41:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 901. [2020-11-12 09:41:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 837 states have (on average 1.4241338112305855) internal successors, (1192), 900 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1192 transitions. [2020-11-12 09:41:03,918 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1192 transitions. Word has length 61 [2020-11-12 09:41:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:03,918 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1192 transitions. [2020-11-12 09:41:03,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1192 transitions. [2020-11-12 09:41:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 09:41:03,920 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:03,920 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:04,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:04,136 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:04,137 INFO L82 PathProgramCache]: Analyzing trace with hash -358310510, now seen corresponding path program 13 times [2020-11-12 09:41:04,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:04,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094782113] [2020-11-12 09:41:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:04,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094782113] [2020-11-12 09:41:04,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170819611] [2020-11-12 09:41:04,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:04,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 09:41:04,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:04,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:04,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:04,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:04,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2020-11-12 09:41:04,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882654963] [2020-11-12 09:41:04,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 09:41:04,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:04,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 09:41:04,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-11-12 09:41:04,553 INFO L87 Difference]: Start difference. First operand 901 states and 1192 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:04,927 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2020-11-12 09:41:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-12 09:41:04,928 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 09:41:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:04,934 INFO L225 Difference]: With dead ends: 1656 [2020-11-12 09:41:04,934 INFO L226 Difference]: Without dead ends: 1414 [2020-11-12 09:41:04,935 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:41:04,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-11-12 09:41:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 911. [2020-11-12 09:41:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 847 states have (on average 1.421487603305785) internal successors, (1204), 910 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1204 transitions. [2020-11-12 09:41:04,956 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1204 transitions. Word has length 66 [2020-11-12 09:41:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:04,956 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1204 transitions. [2020-11-12 09:41:04,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1204 transitions. [2020-11-12 09:41:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 09:41:04,958 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:04,958 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:05,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:05,172 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash 620611026, now seen corresponding path program 14 times [2020-11-12 09:41:05,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:05,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202922489] [2020-11-12 09:41:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:05,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202922489] [2020-11-12 09:41:05,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819448998] [2020-11-12 09:41:05,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:05,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:05,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:05,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 09:41:05,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:05,453 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:05,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:05,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:05,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 09:41:05,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980415857] [2020-11-12 09:41:05,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:05,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:05,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:05,499 INFO L87 Difference]: Start difference. First operand 911 states and 1204 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:05,902 INFO L93 Difference]: Finished difference Result 1373 states and 1711 transitions. [2020-11-12 09:41:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-12 09:41:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 09:41:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:05,908 INFO L225 Difference]: With dead ends: 1373 [2020-11-12 09:41:05,908 INFO L226 Difference]: Without dead ends: 1131 [2020-11-12 09:41:05,909 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2020-11-12 09:41:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2020-11-12 09:41:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 934. [2020-11-12 09:41:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 870 states have (on average 1.4172413793103449) internal successors, (1233), 933 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1233 transitions. [2020-11-12 09:41:05,927 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1233 transitions. Word has length 66 [2020-11-12 09:41:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:05,927 INFO L481 AbstractCegarLoop]: Abstraction has 934 states and 1233 transitions. [2020-11-12 09:41:05,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1233 transitions. [2020-11-12 09:41:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 09:41:05,929 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:05,929 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:06,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-12 09:41:06,142 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:06,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:06,143 INFO L82 PathProgramCache]: Analyzing trace with hash -637096814, now seen corresponding path program 15 times [2020-11-12 09:41:06,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:06,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779644856] [2020-11-12 09:41:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:06,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779644856] [2020-11-12 09:41:06,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099389877] [2020-11-12 09:41:06,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:06,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-12 09:41:06,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:06,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 09:41:06,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:06,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:06,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:06,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:06,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 09:41:06,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445796074] [2020-11-12 09:41:06,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:06,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:06,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:06,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:06,445 INFO L87 Difference]: Start difference. First operand 934 states and 1233 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:06,921 INFO L93 Difference]: Finished difference Result 1374 states and 1713 transitions. [2020-11-12 09:41:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 09:41:06,921 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 09:41:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:06,925 INFO L225 Difference]: With dead ends: 1374 [2020-11-12 09:41:06,925 INFO L226 Difference]: Without dead ends: 1132 [2020-11-12 09:41:06,925 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:41:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-11-12 09:41:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 948. [2020-11-12 09:41:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 884 states have (on average 1.415158371040724) internal successors, (1251), 947 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1251 transitions. [2020-11-12 09:41:06,943 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1251 transitions. Word has length 66 [2020-11-12 09:41:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:06,943 INFO L481 AbstractCegarLoop]: Abstraction has 948 states and 1251 transitions. [2020-11-12 09:41:06,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1251 transitions. [2020-11-12 09:41:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 09:41:06,944 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:06,944 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:07,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-12 09:41:07,151 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:07,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1011326126, now seen corresponding path program 16 times [2020-11-12 09:41:07,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:07,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297674445] [2020-11-12 09:41:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:07,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297674445] [2020-11-12 09:41:07,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893266360] [2020-11-12 09:41:07,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:07,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:07,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:07,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 09:41:07,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:07,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:07,454 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:07,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:07,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-12 09:41:07,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716237975] [2020-11-12 09:41:07,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:07,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:07,465 INFO L87 Difference]: Start difference. First operand 948 states and 1251 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:08,006 INFO L93 Difference]: Finished difference Result 1379 states and 1727 transitions. [2020-11-12 09:41:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 09:41:08,006 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 09:41:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:08,011 INFO L225 Difference]: With dead ends: 1379 [2020-11-12 09:41:08,012 INFO L226 Difference]: Without dead ends: 1165 [2020-11-12 09:41:08,012 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:41:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-11-12 09:41:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 962. [2020-11-12 09:41:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 898 states have (on average 1.418708240534521) internal successors, (1274), 961 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1274 transitions. [2020-11-12 09:41:08,030 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1274 transitions. Word has length 66 [2020-11-12 09:41:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:08,031 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1274 transitions. [2020-11-12 09:41:08,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1274 transitions. [2020-11-12 09:41:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-12 09:41:08,033 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:08,033 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:08,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-12 09:41:08,247 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1439809576, now seen corresponding path program 17 times [2020-11-12 09:41:08,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:08,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261750970] [2020-11-12 09:41:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:08,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261750970] [2020-11-12 09:41:08,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225568777] [2020-11-12 09:41:08,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:08,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-12 09:41:08,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:08,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-12 09:41:08,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:08,515 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:08,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:08,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:08,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-12 09:41:08,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567464160] [2020-11-12 09:41:08,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-12 09:41:08,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:08,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-12 09:41:08,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-12 09:41:08,540 INFO L87 Difference]: Start difference. First operand 962 states and 1274 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:09,079 INFO L93 Difference]: Finished difference Result 1675 states and 2096 transitions. [2020-11-12 09:41:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 09:41:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-11-12 09:41:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:09,084 INFO L225 Difference]: With dead ends: 1675 [2020-11-12 09:41:09,084 INFO L226 Difference]: Without dead ends: 1139 [2020-11-12 09:41:09,085 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2020-11-12 09:41:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-12 09:41:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 934. [2020-11-12 09:41:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 870 states have (on average 1.4172413793103449) internal successors, (1233), 933 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1233 transitions. [2020-11-12 09:41:09,103 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1233 transitions. Word has length 66 [2020-11-12 09:41:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:09,104 INFO L481 AbstractCegarLoop]: Abstraction has 934 states and 1233 transitions. [2020-11-12 09:41:09,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1233 transitions. [2020-11-12 09:41:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 09:41:09,105 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:09,105 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:09,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-12 09:41:09,319 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash 78931943, now seen corresponding path program 18 times [2020-11-12 09:41:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:09,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538625548] [2020-11-12 09:41:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:09,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538625548] [2020-11-12 09:41:09,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120993117] [2020-11-12 09:41:09,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:09,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-12 09:41:09,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:09,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 09:41:09,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:09,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:09,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:09,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:09,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 09:41:09,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593319630] [2020-11-12 09:41:09,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:09,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:09,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:09,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:09,688 INFO L87 Difference]: Start difference. First operand 934 states and 1233 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:10,142 INFO L93 Difference]: Finished difference Result 1404 states and 1749 transitions. [2020-11-12 09:41:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 09:41:10,143 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 09:41:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:10,146 INFO L225 Difference]: With dead ends: 1404 [2020-11-12 09:41:10,146 INFO L226 Difference]: Without dead ends: 1162 [2020-11-12 09:41:10,146 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:41:10,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-11-12 09:41:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 948. [2020-11-12 09:41:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 884 states have (on average 1.415158371040724) internal successors, (1251), 947 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1251 transitions. [2020-11-12 09:41:10,163 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1251 transitions. Word has length 71 [2020-11-12 09:41:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:10,164 INFO L481 AbstractCegarLoop]: Abstraction has 948 states and 1251 transitions. [2020-11-12 09:41:10,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1251 transitions. [2020-11-12 09:41:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 09:41:10,165 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:10,165 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:10,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-12 09:41:10,380 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1178775897, now seen corresponding path program 19 times [2020-11-12 09:41:10,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:10,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525120074] [2020-11-12 09:41:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:10,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525120074] [2020-11-12 09:41:10,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663428291] [2020-11-12 09:41:10,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:10,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 09:41:10,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:10,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:10,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:10,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:10,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 09:41:10,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376220602] [2020-11-12 09:41:10,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:10,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:10,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:10,684 INFO L87 Difference]: Start difference. First operand 948 states and 1251 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:11,244 INFO L93 Difference]: Finished difference Result 1405 states and 1751 transitions. [2020-11-12 09:41:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 09:41:11,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 09:41:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:11,247 INFO L225 Difference]: With dead ends: 1405 [2020-11-12 09:41:11,247 INFO L226 Difference]: Without dead ends: 1163 [2020-11-12 09:41:11,248 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:41:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-11-12 09:41:11,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 962. [2020-11-12 09:41:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 898 states have (on average 1.413140311804009) internal successors, (1269), 961 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1269 transitions. [2020-11-12 09:41:11,266 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1269 transitions. Word has length 71 [2020-11-12 09:41:11,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:11,266 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1269 transitions. [2020-11-12 09:41:11,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1269 transitions. [2020-11-12 09:41:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 09:41:11,268 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:11,268 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:11,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:11,482 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:11,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1553005209, now seen corresponding path program 20 times [2020-11-12 09:41:11,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:11,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277368170] [2020-11-12 09:41:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:11,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277368170] [2020-11-12 09:41:11,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420168018] [2020-11-12 09:41:11,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:11,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:11,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:11,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 09:41:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:11,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:11,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:11,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:11,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 09:41:11,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701436839] [2020-11-12 09:41:11,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:11,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:11,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:11,784 INFO L87 Difference]: Start difference. First operand 962 states and 1269 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:12,381 INFO L93 Difference]: Finished difference Result 1409 states and 1763 transitions. [2020-11-12 09:41:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 09:41:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 09:41:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:12,384 INFO L225 Difference]: With dead ends: 1409 [2020-11-12 09:41:12,384 INFO L226 Difference]: Without dead ends: 1195 [2020-11-12 09:41:12,385 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:41:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-11-12 09:41:12,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 976. [2020-11-12 09:41:12,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 912 states have (on average 1.4166666666666667) internal successors, (1292), 975 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1292 transitions. [2020-11-12 09:41:12,402 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1292 transitions. Word has length 71 [2020-11-12 09:41:12,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:12,403 INFO L481 AbstractCegarLoop]: Abstraction has 976 states and 1292 transitions. [2020-11-12 09:41:12,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1292 transitions. [2020-11-12 09:41:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-12 09:41:12,404 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:12,404 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:12,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-12 09:41:12,614 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:12,615 INFO L82 PathProgramCache]: Analyzing trace with hash 898130493, now seen corresponding path program 21 times [2020-11-12 09:41:12,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:12,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070059809] [2020-11-12 09:41:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:12,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070059809] [2020-11-12 09:41:12,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430304537] [2020-11-12 09:41:12,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:12,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-12 09:41:12,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:12,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-12 09:41:12,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:12,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:12,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:12,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:12,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-12 09:41:12,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464335958] [2020-11-12 09:41:12,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-12 09:41:12,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:12,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-12 09:41:12,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-12 09:41:12,910 INFO L87 Difference]: Start difference. First operand 976 states and 1292 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:13,621 INFO L93 Difference]: Finished difference Result 1714 states and 2142 transitions. [2020-11-12 09:41:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 09:41:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-11-12 09:41:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:13,623 INFO L225 Difference]: With dead ends: 1714 [2020-11-12 09:41:13,624 INFO L226 Difference]: Without dead ends: 1178 [2020-11-12 09:41:13,624 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:41:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-11-12 09:41:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 932. [2020-11-12 09:41:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 868 states have (on average 1.4170506912442395) internal successors, (1230), 931 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1230 transitions. [2020-11-12 09:41:13,643 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1230 transitions. Word has length 71 [2020-11-12 09:41:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:13,643 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1230 transitions. [2020-11-12 09:41:13,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1230 transitions. [2020-11-12 09:41:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 09:41:13,645 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:13,645 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:13,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-12 09:41:13,861 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:13,862 INFO L82 PathProgramCache]: Analyzing trace with hash 752604733, now seen corresponding path program 22 times [2020-11-12 09:41:13,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:13,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180599481] [2020-11-12 09:41:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:14,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180599481] [2020-11-12 09:41:14,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490809130] [2020-11-12 09:41:14,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:14,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:14,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:14,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 09:41:14,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:14,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:14,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:14,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:14,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2020-11-12 09:41:14,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803385850] [2020-11-12 09:41:14,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 09:41:14,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:14,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 09:41:14,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-11-12 09:41:14,289 INFO L87 Difference]: Start difference. First operand 932 states and 1230 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:14,724 INFO L93 Difference]: Finished difference Result 1701 states and 2087 transitions. [2020-11-12 09:41:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-12 09:41:14,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 09:41:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:14,727 INFO L225 Difference]: With dead ends: 1701 [2020-11-12 09:41:14,727 INFO L226 Difference]: Without dead ends: 1459 [2020-11-12 09:41:14,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2020-11-12 09:41:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-11-12 09:41:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 942. [2020-11-12 09:41:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 878 states have (on average 1.4145785876993167) internal successors, (1242), 941 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1242 transitions. [2020-11-12 09:41:14,745 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1242 transitions. Word has length 76 [2020-11-12 09:41:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:14,745 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1242 transitions. [2020-11-12 09:41:14,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1242 transitions. [2020-11-12 09:41:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 09:41:14,747 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:14,747 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:14,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:14,961 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:14,962 INFO L82 PathProgramCache]: Analyzing trace with hash 17804925, now seen corresponding path program 23 times [2020-11-12 09:41:14,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:14,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299148037] [2020-11-12 09:41:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:15,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299148037] [2020-11-12 09:41:15,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737738939] [2020-11-12 09:41:15,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:15,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 09:41:15,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:15,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 09:41:15,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:15,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:15,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:15,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:15,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 09:41:15,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472551165] [2020-11-12 09:41:15,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 09:41:15,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:15,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 09:41:15,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-12 09:41:15,365 INFO L87 Difference]: Start difference. First operand 942 states and 1242 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:15,840 INFO L93 Difference]: Finished difference Result 1446 states and 1797 transitions. [2020-11-12 09:41:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-12 09:41:15,840 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 09:41:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:15,842 INFO L225 Difference]: With dead ends: 1446 [2020-11-12 09:41:15,843 INFO L226 Difference]: Without dead ends: 1204 [2020-11-12 09:41:15,843 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:41:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-11-12 09:41:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 965. [2020-11-12 09:41:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 901 states have (on average 1.4106548279689235) internal successors, (1271), 964 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1271 transitions. [2020-11-12 09:41:15,858 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1271 transitions. Word has length 76 [2020-11-12 09:41:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:15,858 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1271 transitions. [2020-11-12 09:41:15,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1271 transitions. [2020-11-12 09:41:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 09:41:15,860 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:15,860 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:16,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:16,074 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:16,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:16,075 INFO L82 PathProgramCache]: Analyzing trace with hash 808920381, now seen corresponding path program 24 times [2020-11-12 09:41:16,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:16,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710552182] [2020-11-12 09:41:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:16,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710552182] [2020-11-12 09:41:16,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248625843] [2020-11-12 09:41:16,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:16,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-12 09:41:16,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:16,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 09:41:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:16,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:16,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:16,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:16,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 09:41:16,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868864519] [2020-11-12 09:41:16,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 09:41:16,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:16,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 09:41:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-12 09:41:16,650 INFO L87 Difference]: Start difference. First operand 965 states and 1271 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:17,172 INFO L93 Difference]: Finished difference Result 1447 states and 1799 transitions. [2020-11-12 09:41:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 09:41:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 09:41:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:17,174 INFO L225 Difference]: With dead ends: 1447 [2020-11-12 09:41:17,175 INFO L226 Difference]: Without dead ends: 1205 [2020-11-12 09:41:17,175 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:41:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2020-11-12 09:41:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 979. [2020-11-12 09:41:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 915 states have (on average 1.4087431693989072) internal successors, (1289), 978 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1289 transitions. [2020-11-12 09:41:17,191 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1289 transitions. Word has length 76 [2020-11-12 09:41:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:17,191 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 1289 transitions. [2020-11-12 09:41:17,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1289 transitions. [2020-11-12 09:41:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 09:41:17,193 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:17,193 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:17,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-11-12 09:41:17,407 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash -448787459, now seen corresponding path program 25 times [2020-11-12 09:41:17,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:17,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13650733] [2020-11-12 09:41:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:17,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13650733] [2020-11-12 09:41:17,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788856301] [2020-11-12 09:41:17,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:17,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 09:41:17,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:17,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:17,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:17,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:17,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 09:41:17,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124175363] [2020-11-12 09:41:17,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 09:41:17,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:17,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 09:41:17,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-11-12 09:41:17,759 INFO L87 Difference]: Start difference. First operand 979 states and 1289 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:18,401 INFO L93 Difference]: Finished difference Result 1439 states and 1791 transitions. [2020-11-12 09:41:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 09:41:18,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 09:41:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:18,403 INFO L225 Difference]: With dead ends: 1439 [2020-11-12 09:41:18,403 INFO L226 Difference]: Without dead ends: 1197 [2020-11-12 09:41:18,404 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:41:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-11-12 09:41:18,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 993. [2020-11-12 09:41:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 929 states have (on average 1.4068891280947255) internal successors, (1307), 992 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1307 transitions. [2020-11-12 09:41:18,418 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1307 transitions. Word has length 76 [2020-11-12 09:41:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:18,418 INFO L481 AbstractCegarLoop]: Abstraction has 993 states and 1307 transitions. [2020-11-12 09:41:18,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1307 transitions. [2020-11-12 09:41:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 09:41:18,419 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:18,420 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:18,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:18,633 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:18,633 INFO L82 PathProgramCache]: Analyzing trace with hash -823016771, now seen corresponding path program 26 times [2020-11-12 09:41:18,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:18,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932727215] [2020-11-12 09:41:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:18,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932727215] [2020-11-12 09:41:18,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401198200] [2020-11-12 09:41:18,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:18,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:18,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:18,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 09:41:18,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:18,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:18,989 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:19,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:19,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 09:41:19,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416413053] [2020-11-12 09:41:19,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 09:41:19,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:19,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 09:41:19,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-12 09:41:19,002 INFO L87 Difference]: Start difference. First operand 993 states and 1307 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:19,749 INFO L93 Difference]: Finished difference Result 1444 states and 1805 transitions. [2020-11-12 09:41:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:41:19,749 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 09:41:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:19,751 INFO L225 Difference]: With dead ends: 1444 [2020-11-12 09:41:19,751 INFO L226 Difference]: Without dead ends: 1230 [2020-11-12 09:41:19,752 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=1104, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 09:41:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-11-12 09:41:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1007. [2020-11-12 09:41:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 943 states have (on average 1.410392364793213) internal successors, (1330), 1006 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1330 transitions. [2020-11-12 09:41:19,764 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1330 transitions. Word has length 76 [2020-11-12 09:41:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:19,764 INFO L481 AbstractCegarLoop]: Abstraction has 1007 states and 1330 transitions. [2020-11-12 09:41:19,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1330 transitions. [2020-11-12 09:41:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-12 09:41:19,766 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:19,766 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:19,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-12 09:41:19,980 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:19,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1628118931, now seen corresponding path program 27 times [2020-11-12 09:41:19,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:19,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181455795] [2020-11-12 09:41:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:20,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181455795] [2020-11-12 09:41:20,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052315936] [2020-11-12 09:41:20,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:20,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-12 09:41:20,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:20,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-12 09:41:20,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:20,278 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:20,307 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:20,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:20,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-12 09:41:20,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986882931] [2020-11-12 09:41:20,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-12 09:41:20,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:20,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-12 09:41:20,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-12 09:41:20,318 INFO L87 Difference]: Start difference. First operand 1007 states and 1330 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:21,186 INFO L93 Difference]: Finished difference Result 2003 states and 2413 transitions. [2020-11-12 09:41:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 09:41:21,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-11-12 09:41:21,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:21,188 INFO L225 Difference]: With dead ends: 2003 [2020-11-12 09:41:21,188 INFO L226 Difference]: Without dead ends: 1269 [2020-11-12 09:41:21,189 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 09:41:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-11-12 09:41:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1017. [2020-11-12 09:41:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 953 states have (on average 1.4092339979013642) internal successors, (1343), 1016 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1343 transitions. [2020-11-12 09:41:21,201 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1343 transitions. Word has length 76 [2020-11-12 09:41:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:21,201 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1343 transitions. [2020-11-12 09:41:21,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1343 transitions. [2020-11-12 09:41:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 09:41:21,202 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:21,203 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:21,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:21,417 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:21,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash 623278674, now seen corresponding path program 28 times [2020-11-12 09:41:21,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:21,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075670079] [2020-11-12 09:41:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:21,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075670079] [2020-11-12 09:41:21,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485209281] [2020-11-12 09:41:21,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:21,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:21,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:21,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:21,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:21,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:21,802 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:21,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:21,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 09:41:21,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221680946] [2020-11-12 09:41:21,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 09:41:21,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:21,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 09:41:21,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-11-12 09:41:21,819 INFO L87 Difference]: Start difference. First operand 1017 states and 1343 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:22,348 INFO L93 Difference]: Finished difference Result 1515 states and 1889 transitions. [2020-11-12 09:41:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 09:41:22,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 09:41:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:22,351 INFO L225 Difference]: With dead ends: 1515 [2020-11-12 09:41:22,351 INFO L226 Difference]: Without dead ends: 1273 [2020-11-12 09:41:22,351 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:41:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-11-12 09:41:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1017. [2020-11-12 09:41:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 953 states have (on average 1.4092339979013642) internal successors, (1343), 1016 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1343 transitions. [2020-11-12 09:41:22,364 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1343 transitions. Word has length 81 [2020-11-12 09:41:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:22,364 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1343 transitions. [2020-11-12 09:41:22,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1343 transitions. [2020-11-12 09:41:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 09:41:22,366 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:22,366 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:22,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-12 09:41:22,582 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1414394130, now seen corresponding path program 29 times [2020-11-12 09:41:22,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:22,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806291003] [2020-11-12 09:41:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:22,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806291003] [2020-11-12 09:41:22,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119848803] [2020-11-12 09:41:22,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:22,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-11-12 09:41:22,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:22,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 09:41:22,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:22,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:22,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:22,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:22,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 09:41:22,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881306307] [2020-11-12 09:41:22,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 09:41:22,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 09:41:22,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-12 09:41:22,950 INFO L87 Difference]: Start difference. First operand 1017 states and 1343 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:23,569 INFO L93 Difference]: Finished difference Result 1502 states and 1873 transitions. [2020-11-12 09:41:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 09:41:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 09:41:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:23,571 INFO L225 Difference]: With dead ends: 1502 [2020-11-12 09:41:23,571 INFO L226 Difference]: Without dead ends: 1260 [2020-11-12 09:41:23,571 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 09:41:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-11-12 09:41:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1017. [2020-11-12 09:41:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 953 states have (on average 1.4092339979013642) internal successors, (1343), 1016 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1343 transitions. [2020-11-12 09:41:23,586 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1343 transitions. Word has length 81 [2020-11-12 09:41:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:23,586 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1343 transitions. [2020-11-12 09:41:23,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1343 transitions. [2020-11-12 09:41:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 09:41:23,587 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:23,587 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:23,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-12 09:41:23,801 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash 156686290, now seen corresponding path program 30 times [2020-11-12 09:41:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:23,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721327137] [2020-11-12 09:41:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:24,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721327137] [2020-11-12 09:41:24,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598631745] [2020-11-12 09:41:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:24,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 09:41:24,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:24,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 09:41:24,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:24,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:24,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:24,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:24,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 09:41:24,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117779866] [2020-11-12 09:41:24,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 09:41:24,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:24,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 09:41:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-11-12 09:41:24,186 INFO L87 Difference]: Start difference. First operand 1017 states and 1343 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:24,912 INFO L93 Difference]: Finished difference Result 1489 states and 1857 transitions. [2020-11-12 09:41:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:41:24,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 09:41:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:24,915 INFO L225 Difference]: With dead ends: 1489 [2020-11-12 09:41:24,915 INFO L226 Difference]: Without dead ends: 1247 [2020-11-12 09:41:24,916 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 09:41:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2020-11-12 09:41:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1017. [2020-11-12 09:41:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 953 states have (on average 1.4092339979013642) internal successors, (1343), 1016 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1343 transitions. [2020-11-12 09:41:24,959 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1343 transitions. Word has length 81 [2020-11-12 09:41:24,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:24,959 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1343 transitions. [2020-11-12 09:41:24,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1343 transitions. [2020-11-12 09:41:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 09:41:24,961 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:24,961 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:25,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-12 09:41:25,168 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash -217543022, now seen corresponding path program 31 times [2020-11-12 09:41:25,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:25,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651356222] [2020-11-12 09:41:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:25,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651356222] [2020-11-12 09:41:25,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259145723] [2020-11-12 09:41:25,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:25,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 09:41:25,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:25,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:25,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:25,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:25,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 09:41:25,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469236546] [2020-11-12 09:41:25,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 09:41:25,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:25,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 09:41:25,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-11-12 09:41:25,529 INFO L87 Difference]: Start difference. First operand 1017 states and 1343 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:26,312 INFO L93 Difference]: Finished difference Result 1483 states and 1851 transitions. [2020-11-12 09:41:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:41:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 09:41:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:26,315 INFO L225 Difference]: With dead ends: 1483 [2020-11-12 09:41:26,315 INFO L226 Difference]: Without dead ends: 1269 [2020-11-12 09:41:26,316 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 09:41:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-11-12 09:41:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1021. [2020-11-12 09:41:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 957 states have (on average 1.4085684430512018) internal successors, (1348), 1020 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1348 transitions. [2020-11-12 09:41:26,331 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1348 transitions. Word has length 81 [2020-11-12 09:41:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:26,332 INFO L481 AbstractCegarLoop]: Abstraction has 1021 states and 1348 transitions. [2020-11-12 09:41:26,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1348 transitions. [2020-11-12 09:41:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-12 09:41:26,333 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:26,333 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:26,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-12 09:41:26,547 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:26,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2061374616, now seen corresponding path program 32 times [2020-11-12 09:41:26,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:26,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282157604] [2020-11-12 09:41:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:26,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282157604] [2020-11-12 09:41:26,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367492080] [2020-11-12 09:41:26,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:26,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:26,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:26,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-12 09:41:26,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:26,837 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:26,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:26,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:26,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-12 09:41:26,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158823149] [2020-11-12 09:41:26,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 09:41:26,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:26,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 09:41:26,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-11-12 09:41:26,877 INFO L87 Difference]: Start difference. First operand 1021 states and 1348 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:27,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:27,779 INFO L93 Difference]: Finished difference Result 2015 states and 2412 transitions. [2020-11-12 09:41:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 09:41:27,779 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-11-12 09:41:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:27,782 INFO L225 Difference]: With dead ends: 2015 [2020-11-12 09:41:27,782 INFO L226 Difference]: Without dead ends: 1281 [2020-11-12 09:41:27,783 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 09:41:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-12 09:41:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 963. [2020-11-12 09:41:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 899 states have (on average 1.4104560622914348) internal successors, (1268), 962 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1268 transitions. [2020-11-12 09:41:27,798 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1268 transitions. Word has length 81 [2020-11-12 09:41:27,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:27,798 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1268 transitions. [2020-11-12 09:41:27,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1268 transitions. [2020-11-12 09:41:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:27,799 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:27,800 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:28,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-12 09:41:28,015 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:28,016 INFO L82 PathProgramCache]: Analyzing trace with hash -768576216, now seen corresponding path program 33 times [2020-11-12 09:41:28,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:28,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798739943] [2020-11-12 09:41:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:28,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798739943] [2020-11-12 09:41:28,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427921262] [2020-11-12 09:41:28,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:28,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 09:41:28,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:28,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:28,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:28,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:28,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:28,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:28,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2020-11-12 09:41:28,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539214993] [2020-11-12 09:41:28,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-12 09:41:28,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:28,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-12 09:41:28,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-11-12 09:41:28,493 INFO L87 Difference]: Start difference. First operand 963 states and 1268 transitions. Second operand has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:29,018 INFO L93 Difference]: Finished difference Result 1746 states and 2141 transitions. [2020-11-12 09:41:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-12 09:41:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:29,021 INFO L225 Difference]: With dead ends: 1746 [2020-11-12 09:41:29,021 INFO L226 Difference]: Without dead ends: 1504 [2020-11-12 09:41:29,022 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2020-11-12 09:41:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2020-11-12 09:41:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 973. [2020-11-12 09:41:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 909 states have (on average 1.4081408140814082) internal successors, (1280), 972 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1280 transitions. [2020-11-12 09:41:29,038 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1280 transitions. Word has length 86 [2020-11-12 09:41:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:29,039 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1280 transitions. [2020-11-12 09:41:29,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1280 transitions. [2020-11-12 09:41:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:29,040 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:29,040 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:29,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-11-12 09:41:29,254 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1923284328, now seen corresponding path program 34 times [2020-11-12 09:41:29,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:29,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794969171] [2020-11-12 09:41:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:29,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794969171] [2020-11-12 09:41:29,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267442680] [2020-11-12 09:41:29,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:29,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:29,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:29,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:29,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:29,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:29,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:29,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:29,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 09:41:29,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408300407] [2020-11-12 09:41:29,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 09:41:29,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:29,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 09:41:29,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-12 09:41:29,712 INFO L87 Difference]: Start difference. First operand 973 states and 1280 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:30,228 INFO L93 Difference]: Finished difference Result 1519 states and 1883 transitions. [2020-11-12 09:41:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-12 09:41:30,228 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:30,230 INFO L225 Difference]: With dead ends: 1519 [2020-11-12 09:41:30,230 INFO L226 Difference]: Without dead ends: 1277 [2020-11-12 09:41:30,231 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:41:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-11-12 09:41:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 996. [2020-11-12 09:41:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 932 states have (on average 1.4045064377682404) internal successors, (1309), 995 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1309 transitions. [2020-11-12 09:41:30,242 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1309 transitions. Word has length 86 [2020-11-12 09:41:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:30,242 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1309 transitions. [2020-11-12 09:41:30,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1309 transitions. [2020-11-12 09:41:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:30,243 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:30,243 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:30,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-12 09:41:30,444 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:30,445 INFO L82 PathProgramCache]: Analyzing trace with hash 854918184, now seen corresponding path program 35 times [2020-11-12 09:41:30,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:30,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704242623] [2020-11-12 09:41:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:30,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704242623] [2020-11-12 09:41:30,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188433433] [2020-11-12 09:41:30,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:30,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 09:41:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:30,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 09:41:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:30,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:30,864 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:30,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:30,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 09:41:30,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018282570] [2020-11-12 09:41:30,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 09:41:30,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:30,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 09:41:30,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 09:41:30,879 INFO L87 Difference]: Start difference. First operand 996 states and 1309 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:31,522 INFO L93 Difference]: Finished difference Result 1520 states and 1885 transitions. [2020-11-12 09:41:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 09:41:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:31,525 INFO L225 Difference]: With dead ends: 1520 [2020-11-12 09:41:31,525 INFO L226 Difference]: Without dead ends: 1278 [2020-11-12 09:41:31,526 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 09:41:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-11-12 09:41:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1010. [2020-11-12 09:41:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 946 states have (on average 1.4027484143763214) internal successors, (1327), 1009 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1327 transitions. [2020-11-12 09:41:31,541 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1327 transitions. Word has length 86 [2020-11-12 09:41:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:31,541 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1327 transitions. [2020-11-12 09:41:31,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1327 transitions. [2020-11-12 09:41:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:31,543 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:31,543 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:31,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:31,758 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:31,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:31,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1646033640, now seen corresponding path program 36 times [2020-11-12 09:41:31,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:31,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324153279] [2020-11-12 09:41:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324153279] [2020-11-12 09:41:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420028795] [2020-11-12 09:41:32,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:32,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 09:41:32,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:32,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 09:41:32,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:32,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:32,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:32,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:32,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 09:41:32,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125896415] [2020-11-12 09:41:32,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 09:41:32,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 09:41:32,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-11-12 09:41:32,164 INFO L87 Difference]: Start difference. First operand 1010 states and 1327 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:32,902 INFO L93 Difference]: Finished difference Result 1512 states and 1877 transitions. [2020-11-12 09:41:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:41:32,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:32,905 INFO L225 Difference]: With dead ends: 1512 [2020-11-12 09:41:32,905 INFO L226 Difference]: Without dead ends: 1270 [2020-11-12 09:41:32,906 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 09:41:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-11-12 09:41:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1024. [2020-11-12 09:41:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 960 states have (on average 1.4010416666666667) internal successors, (1345), 1023 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1345 transitions. [2020-11-12 09:41:32,922 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1345 transitions. Word has length 86 [2020-11-12 09:41:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:32,922 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1345 transitions. [2020-11-12 09:41:32,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1345 transitions. [2020-11-12 09:41:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:32,924 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:32,924 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:33,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-12 09:41:33,139 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:33,140 INFO L82 PathProgramCache]: Analyzing trace with hash 388325800, now seen corresponding path program 37 times [2020-11-12 09:41:33,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:33,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423544005] [2020-11-12 09:41:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:33,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423544005] [2020-11-12 09:41:33,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986619086] [2020-11-12 09:41:33,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:33,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 09:41:33,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:33,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:33,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:33,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:33,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 09:41:33,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064673821] [2020-11-12 09:41:33,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 09:41:33,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:33,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 09:41:33,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-11-12 09:41:33,523 INFO L87 Difference]: Start difference. First operand 1024 states and 1345 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:34,373 INFO L93 Difference]: Finished difference Result 1504 states and 1869 transitions. [2020-11-12 09:41:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:41:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:34,375 INFO L225 Difference]: With dead ends: 1504 [2020-11-12 09:41:34,375 INFO L226 Difference]: Without dead ends: 1262 [2020-11-12 09:41:34,375 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=443, Invalid=1363, Unknown=0, NotChecked=0, Total=1806 [2020-11-12 09:41:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-11-12 09:41:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1038. [2020-11-12 09:41:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 974 states have (on average 1.3993839835728952) internal successors, (1363), 1037 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1363 transitions. [2020-11-12 09:41:34,390 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1363 transitions. Word has length 86 [2020-11-12 09:41:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:34,390 INFO L481 AbstractCegarLoop]: Abstraction has 1038 states and 1363 transitions. [2020-11-12 09:41:34,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1363 transitions. [2020-11-12 09:41:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:34,391 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:34,392 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:34,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:34,604 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:34,605 INFO L82 PathProgramCache]: Analyzing trace with hash 14096488, now seen corresponding path program 38 times [2020-11-12 09:41:34,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:34,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803224168] [2020-11-12 09:41:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:34,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803224168] [2020-11-12 09:41:34,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799766637] [2020-11-12 09:41:34,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:34,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:34,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:34,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 09:41:34,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:34,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:34,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:34,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:34,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-12 09:41:34,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377648855] [2020-11-12 09:41:34,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-12 09:41:34,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:34,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-12 09:41:34,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-11-12 09:41:34,979 INFO L87 Difference]: Start difference. First operand 1038 states and 1363 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:35,967 INFO L93 Difference]: Finished difference Result 1893 states and 2291 transitions. [2020-11-12 09:41:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:41:35,967 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:35,969 INFO L225 Difference]: With dead ends: 1893 [2020-11-12 09:41:35,969 INFO L226 Difference]: Without dead ends: 1342 [2020-11-12 09:41:35,970 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 09:41:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-11-12 09:41:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1052. [2020-11-12 09:41:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 988 states have (on average 1.402834008097166) internal successors, (1386), 1051 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1386 transitions. [2020-11-12 09:41:35,983 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1386 transitions. Word has length 86 [2020-11-12 09:41:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:35,983 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1386 transitions. [2020-11-12 09:41:35,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1386 transitions. [2020-11-12 09:41:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-12 09:41:35,984 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:35,984 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:36,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-11-12 09:41:36,185 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:36,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1829735106, now seen corresponding path program 39 times [2020-11-12 09:41:36,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:36,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271064443] [2020-11-12 09:41:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:36,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271064443] [2020-11-12 09:41:36,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911845410] [2020-11-12 09:41:36,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:36,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 09:41:36,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:36,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-12 09:41:36,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:36,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:36,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:36,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:36,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-11-12 09:41:36,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063887151] [2020-11-12 09:41:36,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-12 09:41:36,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-12 09:41:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-12 09:41:36,536 INFO L87 Difference]: Start difference. First operand 1052 states and 1386 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:37,500 INFO L93 Difference]: Finished difference Result 1805 states and 2252 transitions. [2020-11-12 09:41:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 09:41:37,500 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-11-12 09:41:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:37,501 INFO L225 Difference]: With dead ends: 1805 [2020-11-12 09:41:37,502 INFO L226 Difference]: Without dead ends: 1269 [2020-11-12 09:41:37,502 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 09:41:37,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-11-12 09:41:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 996. [2020-11-12 09:41:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 932 states have (on average 1.4045064377682404) internal successors, (1309), 995 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1309 transitions. [2020-11-12 09:41:37,514 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1309 transitions. Word has length 86 [2020-11-12 09:41:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:37,514 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1309 transitions. [2020-11-12 09:41:37,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1309 transitions. [2020-11-12 09:41:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 09:41:37,515 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:37,516 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:37,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:37,730 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:37,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:37,730 INFO L82 PathProgramCache]: Analyzing trace with hash 792773373, now seen corresponding path program 40 times [2020-11-12 09:41:37,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:37,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4046878] [2020-11-12 09:41:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4046878] [2020-11-12 09:41:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337779233] [2020-11-12 09:41:38,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:38,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:38,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:41:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:38,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:38,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:38,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:38,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 09:41:38,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344064505] [2020-11-12 09:41:38,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:38,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:38,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:38,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:38,203 INFO L87 Difference]: Start difference. First operand 996 states and 1309 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:38,807 INFO L93 Difference]: Finished difference Result 1550 states and 1921 transitions. [2020-11-12 09:41:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 09:41:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 09:41:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:38,809 INFO L225 Difference]: With dead ends: 1550 [2020-11-12 09:41:38,809 INFO L226 Difference]: Without dead ends: 1308 [2020-11-12 09:41:38,810 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 09:41:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-11-12 09:41:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1010. [2020-11-12 09:41:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 946 states have (on average 1.4027484143763214) internal successors, (1327), 1009 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1327 transitions. [2020-11-12 09:41:38,825 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1327 transitions. Word has length 91 [2020-11-12 09:41:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:38,825 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1327 transitions. [2020-11-12 09:41:38,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1327 transitions. [2020-11-12 09:41:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 09:41:38,826 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:38,826 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:39,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-11-12 09:41:39,041 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash -275592771, now seen corresponding path program 41 times [2020-11-12 09:41:39,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:39,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665187175] [2020-11-12 09:41:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:39,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665187175] [2020-11-12 09:41:39,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958063543] [2020-11-12 09:41:39,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:39,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-12 09:41:39,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:39,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:39,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:39,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:39,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:39,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:39,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 09:41:39,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153332937] [2020-11-12 09:41:39,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:39,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:39,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:39,592 INFO L87 Difference]: Start difference. First operand 1010 states and 1327 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:40,256 INFO L93 Difference]: Finished difference Result 1551 states and 1923 transitions. [2020-11-12 09:41:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:41:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 09:41:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:40,258 INFO L225 Difference]: With dead ends: 1551 [2020-11-12 09:41:40,258 INFO L226 Difference]: Without dead ends: 1309 [2020-11-12 09:41:40,259 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 09:41:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-11-12 09:41:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1024. [2020-11-12 09:41:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 960 states have (on average 1.4010416666666667) internal successors, (1345), 1023 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1345 transitions. [2020-11-12 09:41:40,270 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1345 transitions. Word has length 91 [2020-11-12 09:41:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:40,270 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1345 transitions. [2020-11-12 09:41:40,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1345 transitions. [2020-11-12 09:41:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 09:41:40,271 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:40,271 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:40,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-12 09:41:40,472 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash 515522685, now seen corresponding path program 42 times [2020-11-12 09:41:40,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:40,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942266464] [2020-11-12 09:41:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:40,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942266464] [2020-11-12 09:41:40,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983622481] [2020-11-12 09:41:40,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:40,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-12 09:41:40,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:40,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:40,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:40,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:40,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:40,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:40,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 09:41:40,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871287028] [2020-11-12 09:41:40,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:40,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:40,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:40,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:40,916 INFO L87 Difference]: Start difference. First operand 1024 states and 1345 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:41,715 INFO L93 Difference]: Finished difference Result 1552 states and 1925 transitions. [2020-11-12 09:41:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:41:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 09:41:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:41,717 INFO L225 Difference]: With dead ends: 1552 [2020-11-12 09:41:41,717 INFO L226 Difference]: Without dead ends: 1310 [2020-11-12 09:41:41,717 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 09:41:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-11-12 09:41:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1038. [2020-11-12 09:41:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 974 states have (on average 1.3993839835728952) internal successors, (1363), 1037 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1363 transitions. [2020-11-12 09:41:41,728 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1363 transitions. Word has length 91 [2020-11-12 09:41:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:41,729 INFO L481 AbstractCegarLoop]: Abstraction has 1038 states and 1363 transitions. [2020-11-12 09:41:41,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1363 transitions. [2020-11-12 09:41:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 09:41:41,730 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:41,730 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:41,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-12 09:41:41,931 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash -742185155, now seen corresponding path program 43 times [2020-11-12 09:41:41,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:41,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569215963] [2020-11-12 09:41:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569215963] [2020-11-12 09:41:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478564845] [2020-11-12 09:41:42,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:42,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:42,289 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:42,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:42,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:42,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 09:41:42,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804477068] [2020-11-12 09:41:42,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:42,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:42,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:42,346 INFO L87 Difference]: Start difference. First operand 1038 states and 1363 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:43,250 INFO L93 Difference]: Finished difference Result 1553 states and 1927 transitions. [2020-11-12 09:41:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:41:43,250 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 09:41:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:43,252 INFO L225 Difference]: With dead ends: 1553 [2020-11-12 09:41:43,252 INFO L226 Difference]: Without dead ends: 1311 [2020-11-12 09:41:43,252 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 09:41:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-11-12 09:41:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1052. [2020-11-12 09:41:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 988 states have (on average 1.3977732793522266) internal successors, (1381), 1051 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1381 transitions. [2020-11-12 09:41:43,263 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1381 transitions. Word has length 91 [2020-11-12 09:41:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:43,264 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1381 transitions. [2020-11-12 09:41:43,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1381 transitions. [2020-11-12 09:41:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 09:41:43,265 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:43,265 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:43,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-11-12 09:41:43,466 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:43,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1116414467, now seen corresponding path program 44 times [2020-11-12 09:41:43,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:43,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130265529] [2020-11-12 09:41:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:43,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130265529] [2020-11-12 09:41:43,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147179256] [2020-11-12 09:41:43,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:43,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:43,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:43,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:43,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:43,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:43,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:43,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:43,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 09:41:43,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932772438] [2020-11-12 09:41:43,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:43,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:43,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:43,870 INFO L87 Difference]: Start difference. First operand 1052 states and 1381 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:44,845 INFO L93 Difference]: Finished difference Result 1557 states and 1939 transitions. [2020-11-12 09:41:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:41:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 09:41:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:44,846 INFO L225 Difference]: With dead ends: 1557 [2020-11-12 09:41:44,846 INFO L226 Difference]: Without dead ends: 1343 [2020-11-12 09:41:44,847 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=584, Invalid=1672, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 09:41:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-11-12 09:41:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1066. [2020-11-12 09:41:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1002 states have (on average 1.401197604790419) internal successors, (1404), 1065 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1404 transitions. [2020-11-12 09:41:44,858 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1404 transitions. Word has length 91 [2020-11-12 09:41:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:44,858 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 1404 transitions. [2020-11-12 09:41:44,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1404 transitions. [2020-11-12 09:41:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-12 09:41:44,859 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:44,859 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:45,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:45,060 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1334721235, now seen corresponding path program 45 times [2020-11-12 09:41:45,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:45,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42553304] [2020-11-12 09:41:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:45,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42553304] [2020-11-12 09:41:45,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268949478] [2020-11-12 09:41:45,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:45,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-12 09:41:45,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:45,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-12 09:41:45,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:45,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:45,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:45,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:45,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-12 09:41:45,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480335666] [2020-11-12 09:41:45,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:45,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:45,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:45,479 INFO L87 Difference]: Start difference. First operand 1066 states and 1404 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:46,623 INFO L93 Difference]: Finished difference Result 2089 states and 2500 transitions. [2020-11-12 09:41:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 09:41:46,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-11-12 09:41:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:46,625 INFO L225 Difference]: With dead ends: 2089 [2020-11-12 09:41:46,625 INFO L226 Difference]: Without dead ends: 1355 [2020-11-12 09:41:46,625 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=714, Invalid=2042, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 09:41:46,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-11-12 09:41:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1076. [2020-11-12 09:41:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1012 states have (on average 1.400197628458498) internal successors, (1417), 1075 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1417 transitions. [2020-11-12 09:41:46,636 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1417 transitions. Word has length 91 [2020-11-12 09:41:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:46,637 INFO L481 AbstractCegarLoop]: Abstraction has 1076 states and 1417 transitions. [2020-11-12 09:41:46,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1417 transitions. [2020-11-12 09:41:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:46,638 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:46,638 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:46,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:46,842 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:46,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1295537581, now seen corresponding path program 46 times [2020-11-12 09:41:46,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:46,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24007682] [2020-11-12 09:41:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:47,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24007682] [2020-11-12 09:41:47,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128134159] [2020-11-12 09:41:47,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:47,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:47,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:41:47,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:47,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:47,312 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:47,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:47,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:41:47,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645939572] [2020-11-12 09:41:47,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:41:47,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:41:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:41:47,337 INFO L87 Difference]: Start difference. First operand 1076 states and 1417 transitions. Second operand has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:47,934 INFO L93 Difference]: Finished difference Result 1873 states and 2306 transitions. [2020-11-12 09:41:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-12 09:41:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:47,937 INFO L225 Difference]: With dead ends: 1873 [2020-11-12 09:41:47,937 INFO L226 Difference]: Without dead ends: 1631 [2020-11-12 09:41:47,937 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1201, Unknown=0, NotChecked=0, Total=1640 [2020-11-12 09:41:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-11-12 09:41:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1086. [2020-11-12 09:41:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1022 states have (on average 1.398238747553816) internal successors, (1429), 1085 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1429 transitions. [2020-11-12 09:41:47,948 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1429 transitions. Word has length 96 [2020-11-12 09:41:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:47,948 INFO L481 AbstractCegarLoop]: Abstraction has 1086 states and 1429 transitions. [2020-11-12 09:41:47,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1429 transitions. [2020-11-12 09:41:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:47,949 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:47,949 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:48,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-11-12 09:41:48,150 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:48,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1529027949, now seen corresponding path program 47 times [2020-11-12 09:41:48,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:48,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778305354] [2020-11-12 09:41:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778305354] [2020-11-12 09:41:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867335887] [2020-11-12 09:41:48,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:48,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 09:41:48,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:48,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:48,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:48,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:48,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 1 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:48,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:48,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:48,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202576507] [2020-11-12 09:41:48,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:48,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:48,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:48,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:48,624 INFO L87 Difference]: Start difference. First operand 1086 states and 1429 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:49,262 INFO L93 Difference]: Finished difference Result 1658 states and 2059 transitions. [2020-11-12 09:41:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-12 09:41:49,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:49,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:49,264 INFO L225 Difference]: With dead ends: 1658 [2020-11-12 09:41:49,264 INFO L226 Difference]: Without dead ends: 1416 [2020-11-12 09:41:49,264 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2020-11-12 09:41:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-11-12 09:41:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1093. [2020-11-12 09:41:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1029 states have (on average 1.3965014577259476) internal successors, (1437), 1092 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1437 transitions. [2020-11-12 09:41:49,276 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1437 transitions. Word has length 96 [2020-11-12 09:41:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:49,277 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1437 transitions. [2020-11-12 09:41:49,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1437 transitions. [2020-11-12 09:41:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:49,278 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:49,278 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:49,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:49,480 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:49,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1369081517, now seen corresponding path program 48 times [2020-11-12 09:41:49,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:49,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429910179] [2020-11-12 09:41:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429910179] [2020-11-12 09:41:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436834311] [2020-11-12 09:41:49,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:49,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-12 09:41:49,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:49,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:49,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:49,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:49,899 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:49,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:49,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:49,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479521165] [2020-11-12 09:41:49,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:49,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:49,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:49,927 INFO L87 Difference]: Start difference. First operand 1093 states and 1437 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:50,612 INFO L93 Difference]: Finished difference Result 1645 states and 2043 transitions. [2020-11-12 09:41:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:41:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:50,613 INFO L225 Difference]: With dead ends: 1645 [2020-11-12 09:41:50,614 INFO L226 Difference]: Without dead ends: 1403 [2020-11-12 09:41:50,614 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2020-11-12 09:41:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-11-12 09:41:50,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1093. [2020-11-12 09:41:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1029 states have (on average 1.3965014577259476) internal successors, (1437), 1092 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1437 transitions. [2020-11-12 09:41:50,624 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1437 transitions. Word has length 96 [2020-11-12 09:41:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:50,624 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1437 transitions. [2020-11-12 09:41:50,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1437 transitions. [2020-11-12 09:41:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:50,625 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:50,625 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:50,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-11-12 09:41:50,826 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:50,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1857519635, now seen corresponding path program 49 times [2020-11-12 09:41:50,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:50,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404053122] [2020-11-12 09:41:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:51,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404053122] [2020-11-12 09:41:51,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348870246] [2020-11-12 09:41:51,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:51,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:51,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:51,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:51,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:51,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:51,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:51,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691001056] [2020-11-12 09:41:51,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:51,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:51,269 INFO L87 Difference]: Start difference. First operand 1093 states and 1437 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:52,106 INFO L93 Difference]: Finished difference Result 1623 states and 2017 transitions. [2020-11-12 09:41:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:41:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:52,107 INFO L225 Difference]: With dead ends: 1623 [2020-11-12 09:41:52,107 INFO L226 Difference]: Without dead ends: 1381 [2020-11-12 09:41:52,108 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 09:41:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-11-12 09:41:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1093. [2020-11-12 09:41:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1029 states have (on average 1.3965014577259476) internal successors, (1437), 1092 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1437 transitions. [2020-11-12 09:41:52,119 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1437 transitions. Word has length 96 [2020-11-12 09:41:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:52,119 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1437 transitions. [2020-11-12 09:41:52,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1437 transitions. [2020-11-12 09:41:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:52,120 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:52,120 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:52,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-12 09:41:52,321 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:52,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:52,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1646332205, now seen corresponding path program 50 times [2020-11-12 09:41:52,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:52,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623017432] [2020-11-12 09:41:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:52,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623017432] [2020-11-12 09:41:52,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629672168] [2020-11-12 09:41:52,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:52,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:41:52,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:52,726 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:52,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:52,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:52,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:52,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613014119] [2020-11-12 09:41:52,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:52,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:52,763 INFO L87 Difference]: Start difference. First operand 1093 states and 1437 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:53,690 INFO L93 Difference]: Finished difference Result 1601 states and 1991 transitions. [2020-11-12 09:41:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:41:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:53,692 INFO L225 Difference]: With dead ends: 1601 [2020-11-12 09:41:53,692 INFO L226 Difference]: Without dead ends: 1359 [2020-11-12 09:41:53,692 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 09:41:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-11-12 09:41:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1093. [2020-11-12 09:41:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1029 states have (on average 1.3965014577259476) internal successors, (1437), 1092 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1437 transitions. [2020-11-12 09:41:53,707 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1437 transitions. Word has length 96 [2020-11-12 09:41:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:53,707 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1437 transitions. [2020-11-12 09:41:53,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1437 transitions. [2020-11-12 09:41:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:53,709 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:53,709 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:53,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-11-12 09:41:53,923 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:53,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1390927251, now seen corresponding path program 51 times [2020-11-12 09:41:53,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:53,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364374179] [2020-11-12 09:41:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:54,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364374179] [2020-11-12 09:41:54,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396534955] [2020-11-12 09:41:54,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:54,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 09:41:54,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:54,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:54,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:54,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:54,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:54,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:54,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:54,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657219731] [2020-11-12 09:41:54,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:54,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:54,361 INFO L87 Difference]: Start difference. First operand 1093 states and 1437 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:55,424 INFO L93 Difference]: Finished difference Result 1579 states and 1965 transitions. [2020-11-12 09:41:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:41:55,424 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:55,426 INFO L225 Difference]: With dead ends: 1579 [2020-11-12 09:41:55,426 INFO L226 Difference]: Without dead ends: 1337 [2020-11-12 09:41:55,426 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 09:41:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-11-12 09:41:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1093. [2020-11-12 09:41:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1029 states have (on average 1.3965014577259476) internal successors, (1437), 1092 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1437 transitions. [2020-11-12 09:41:55,441 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1437 transitions. Word has length 96 [2020-11-12 09:41:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:55,441 INFO L481 AbstractCegarLoop]: Abstraction has 1093 states and 1437 transitions. [2020-11-12 09:41:55,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1437 transitions. [2020-11-12 09:41:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:55,442 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:55,442 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:55,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-11-12 09:41:55,643 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:55,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1016697939, now seen corresponding path program 52 times [2020-11-12 09:41:55,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:55,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745600012] [2020-11-12 09:41:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:55,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745600012] [2020-11-12 09:41:55,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719335371] [2020-11-12 09:41:55,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:55,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:41:55,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:55,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:41:55,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:56,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:56,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:56,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:56,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:56,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784580537] [2020-11-12 09:41:56,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:56,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:56,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:56,056 INFO L87 Difference]: Start difference. First operand 1093 states and 1437 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:57,210 INFO L93 Difference]: Finished difference Result 1574 states and 1961 transitions. [2020-11-12 09:41:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:41:57,210 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:57,211 INFO L225 Difference]: With dead ends: 1574 [2020-11-12 09:41:57,211 INFO L226 Difference]: Without dead ends: 1360 [2020-11-12 09:41:57,212 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 09:41:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-11-12 09:41:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1097. [2020-11-12 09:41:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1033 states have (on average 1.3959341723136496) internal successors, (1442), 1096 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1442 transitions. [2020-11-12 09:41:57,223 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1442 transitions. Word has length 96 [2020-11-12 09:41:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:57,223 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1442 transitions. [2020-11-12 09:41:57,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1442 transitions. [2020-11-12 09:41:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-12 09:41:57,224 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:57,224 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:57,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-12 09:41:57,425 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:57,426 INFO L82 PathProgramCache]: Analyzing trace with hash -827133655, now seen corresponding path program 53 times [2020-11-12 09:41:57,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:57,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322509414] [2020-11-12 09:41:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:57,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322509414] [2020-11-12 09:41:57,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462628612] [2020-11-12 09:41:57,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:57,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 09:41:57,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:57,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-12 09:41:57,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:57,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:57,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:57,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:57,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-11-12 09:41:57,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725641929] [2020-11-12 09:41:57,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-12 09:41:57,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-12 09:41:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-11-12 09:41:57,822 INFO L87 Difference]: Start difference. First operand 1097 states and 1442 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:41:59,019 INFO L93 Difference]: Finished difference Result 1870 states and 2330 transitions. [2020-11-12 09:41:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 09:41:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-11-12 09:41:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:41:59,021 INFO L225 Difference]: With dead ends: 1870 [2020-11-12 09:41:59,021 INFO L226 Difference]: Without dead ends: 1334 [2020-11-12 09:41:59,022 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 09:41:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-11-12 09:41:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1027. [2020-11-12 09:41:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 963 states have (on average 1.398753894080997) internal successors, (1347), 1026 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1347 transitions. [2020-11-12 09:41:59,033 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1347 transitions. Word has length 96 [2020-11-12 09:41:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:41:59,033 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1347 transitions. [2020-11-12 09:41:59,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:41:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1347 transitions. [2020-11-12 09:41:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:41:59,034 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:41:59,034 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:41:59,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:59,235 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:41:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:41:59,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1478200856, now seen corresponding path program 54 times [2020-11-12 09:41:59,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:41:59,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822194180] [2020-11-12 09:41:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:41:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:41:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:59,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822194180] [2020-11-12 09:41:59,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271763390] [2020-11-12 09:41:59,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:41:59,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 09:41:59,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:41:59,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:41:59,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:41:59,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:41:59,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:41:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:41:59,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:41:59,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:41:59,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405277927] [2020-11-12 09:41:59,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:41:59,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:41:59,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:41:59,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:41:59,787 INFO L87 Difference]: Start difference. First operand 1027 states and 1347 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:00,491 INFO L93 Difference]: Finished difference Result 1623 states and 2007 transitions. [2020-11-12 09:42:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:42:00,492 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:00,493 INFO L225 Difference]: With dead ends: 1623 [2020-11-12 09:42:00,493 INFO L226 Difference]: Without dead ends: 1381 [2020-11-12 09:42:00,493 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2020-11-12 09:42:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-11-12 09:42:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1041. [2020-11-12 09:42:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 977 states have (on average 1.3971340839303992) internal successors, (1365), 1040 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1365 transitions. [2020-11-12 09:42:00,508 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1365 transitions. Word has length 101 [2020-11-12 09:42:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:00,508 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1365 transitions. [2020-11-12 09:42:00,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1365 transitions. [2020-11-12 09:42:00,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:42:00,510 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:00,510 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:00,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:00,725 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:00,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1318254424, now seen corresponding path program 55 times [2020-11-12 09:42:00,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:00,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523040110] [2020-11-12 09:42:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:01,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523040110] [2020-11-12 09:42:01,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002798] [2020-11-12 09:42:01,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:01,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:42:01,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:01,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:01,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:01,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:01,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:42:01,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865431243] [2020-11-12 09:42:01,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:01,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:01,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:01,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:01,220 INFO L87 Difference]: Start difference. First operand 1041 states and 1365 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:02,023 INFO L93 Difference]: Finished difference Result 1624 states and 2009 transitions. [2020-11-12 09:42:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:42:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:02,025 INFO L225 Difference]: With dead ends: 1624 [2020-11-12 09:42:02,025 INFO L226 Difference]: Without dead ends: 1382 [2020-11-12 09:42:02,025 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 09:42:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-11-12 09:42:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1055. [2020-11-12 09:42:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 991 states have (on average 1.3955600403632695) internal successors, (1383), 1054 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1383 transitions. [2020-11-12 09:42:02,038 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1383 transitions. Word has length 101 [2020-11-12 09:42:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:02,038 INFO L481 AbstractCegarLoop]: Abstraction has 1055 states and 1383 transitions. [2020-11-12 09:42:02,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1383 transitions. [2020-11-12 09:42:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:42:02,047 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:02,047 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:02,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-11-12 09:42:02,252 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1908346728, now seen corresponding path program 56 times [2020-11-12 09:42:02,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:02,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920985130] [2020-11-12 09:42:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:02,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920985130] [2020-11-12 09:42:02,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221920986] [2020-11-12 09:42:02,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:02,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:42:02,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:02,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:42:02,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:02,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:02,774 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:02,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:02,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:42:02,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629202626] [2020-11-12 09:42:02,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:02,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:02,794 INFO L87 Difference]: Start difference. First operand 1055 states and 1383 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:03,702 INFO L93 Difference]: Finished difference Result 1625 states and 2011 transitions. [2020-11-12 09:42:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:42:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:03,704 INFO L225 Difference]: With dead ends: 1625 [2020-11-12 09:42:03,705 INFO L226 Difference]: Without dead ends: 1383 [2020-11-12 09:42:03,705 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 09:42:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2020-11-12 09:42:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1069. [2020-11-12 09:42:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1005 states have (on average 1.3940298507462687) internal successors, (1401), 1068 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1401 transitions. [2020-11-12 09:42:03,717 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1401 transitions. Word has length 101 [2020-11-12 09:42:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:03,718 INFO L481 AbstractCegarLoop]: Abstraction has 1069 states and 1401 transitions. [2020-11-12 09:42:03,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1401 transitions. [2020-11-12 09:42:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:42:03,719 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:03,719 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:03,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:03,920 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:03,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1595505112, now seen corresponding path program 57 times [2020-11-12 09:42:03,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:03,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800573705] [2020-11-12 09:42:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800573705] [2020-11-12 09:42:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291653443] [2020-11-12 09:42:04,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:04,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-12 09:42:04,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:04,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:42:04,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:04,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:04,392 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:04,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:04,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:42:04,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284074341] [2020-11-12 09:42:04,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:04,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:04,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:04,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:04,406 INFO L87 Difference]: Start difference. First operand 1069 states and 1401 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:05,437 INFO L93 Difference]: Finished difference Result 1626 states and 2013 transitions. [2020-11-12 09:42:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:42:05,437 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:05,438 INFO L225 Difference]: With dead ends: 1626 [2020-11-12 09:42:05,438 INFO L226 Difference]: Without dead ends: 1384 [2020-11-12 09:42:05,439 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 09:42:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-11-12 09:42:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1083. [2020-11-12 09:42:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1019 states have (on average 1.392541707556428) internal successors, (1419), 1082 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1419 transitions. [2020-11-12 09:42:05,452 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1419 transitions. Word has length 101 [2020-11-12 09:42:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:05,452 INFO L481 AbstractCegarLoop]: Abstraction has 1083 states and 1419 transitions. [2020-11-12 09:42:05,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1419 transitions. [2020-11-12 09:42:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:42:05,453 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:05,454 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:05,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-11-12 09:42:05,654 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:05,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1441754344, now seen corresponding path program 58 times [2020-11-12 09:42:05,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:05,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651249035] [2020-11-12 09:42:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:05,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651249035] [2020-11-12 09:42:05,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259662742] [2020-11-12 09:42:05,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:06,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:42:06,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:06,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:06,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:06,083 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:06,125 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:06,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:06,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:42:06,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754750388] [2020-11-12 09:42:06,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:06,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:06,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:06,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:06,151 INFO L87 Difference]: Start difference. First operand 1083 states and 1419 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:07,187 INFO L93 Difference]: Finished difference Result 1627 states and 2015 transitions. [2020-11-12 09:42:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:42:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:07,189 INFO L225 Difference]: With dead ends: 1627 [2020-11-12 09:42:07,189 INFO L226 Difference]: Without dead ends: 1385 [2020-11-12 09:42:07,190 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 09:42:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2020-11-12 09:42:07,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1097. [2020-11-12 09:42:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1033 states have (on average 1.3910939012584704) internal successors, (1437), 1096 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1437 transitions. [2020-11-12 09:42:07,202 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1437 transitions. Word has length 101 [2020-11-12 09:42:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:07,203 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1437 transitions. [2020-11-12 09:42:07,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1437 transitions. [2020-11-12 09:42:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:42:07,204 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:07,204 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:07,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:07,404 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:07,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1067525032, now seen corresponding path program 59 times [2020-11-12 09:42:07,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:07,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334326850] [2020-11-12 09:42:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:07,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334326850] [2020-11-12 09:42:07,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242808173] [2020-11-12 09:42:07,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:07,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-12 09:42:07,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:07,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:42:07,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:07,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:07,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 4 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:07,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:07,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:42:07,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754125650] [2020-11-12 09:42:07,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:07,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:07,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:07,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:07,872 INFO L87 Difference]: Start difference. First operand 1097 states and 1437 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:09,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:09,072 INFO L93 Difference]: Finished difference Result 1631 states and 2027 transitions. [2020-11-12 09:42:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:42:09,072 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:09,073 INFO L225 Difference]: With dead ends: 1631 [2020-11-12 09:42:09,073 INFO L226 Difference]: Without dead ends: 1417 [2020-11-12 09:42:09,074 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 09:42:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-11-12 09:42:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1111. [2020-11-12 09:42:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1047 states have (on average 1.3944603629417383) internal successors, (1460), 1110 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1460 transitions. [2020-11-12 09:42:09,089 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1460 transitions. Word has length 101 [2020-11-12 09:42:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:09,089 INFO L481 AbstractCegarLoop]: Abstraction has 1111 states and 1460 transitions. [2020-11-12 09:42:09,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1460 transitions. [2020-11-12 09:42:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-12 09:42:09,091 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:09,091 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:09,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-11-12 09:42:09,306 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:09,306 INFO L82 PathProgramCache]: Analyzing trace with hash -776306562, now seen corresponding path program 60 times [2020-11-12 09:42:09,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:09,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137756323] [2020-11-12 09:42:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:09,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137756323] [2020-11-12 09:42:09,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300996387] [2020-11-12 09:42:09,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:09,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-12 09:42:09,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:09,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-12 09:42:09,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:09,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:09,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:09,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:09,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-12 09:42:09,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781872399] [2020-11-12 09:42:09,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:09,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:09,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:09,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:09,758 INFO L87 Difference]: Start difference. First operand 1111 states and 1460 transitions. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:11,134 INFO L93 Difference]: Finished difference Result 2163 states and 2588 transitions. [2020-11-12 09:42:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 09:42:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-11-12 09:42:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:11,135 INFO L225 Difference]: With dead ends: 2163 [2020-11-12 09:42:11,135 INFO L226 Difference]: Without dead ends: 1429 [2020-11-12 09:42:11,138 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 09:42:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2020-11-12 09:42:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1121. [2020-11-12 09:42:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1057 states have (on average 1.3935666982024597) internal successors, (1473), 1120 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1473 transitions. [2020-11-12 09:42:11,152 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1473 transitions. Word has length 101 [2020-11-12 09:42:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:11,152 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1473 transitions. [2020-11-12 09:42:11,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1473 transitions. [2020-11-12 09:42:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:11,154 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:11,154 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:11,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:11,357 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:11,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:11,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1577756094, now seen corresponding path program 61 times [2020-11-12 09:42:11,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:11,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712475394] [2020-11-12 09:42:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:11,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712475394] [2020-11-12 09:42:11,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529326336] [2020-11-12 09:42:11,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:11,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:11,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:11,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:11,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:11,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:11,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2020-11-12 09:42:11,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242467716] [2020-11-12 09:42:11,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-12 09:42:11,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-12 09:42:11,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2020-11-12 09:42:11,949 INFO L87 Difference]: Start difference. First operand 1121 states and 1473 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:12,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:12,669 INFO L93 Difference]: Finished difference Result 1932 states and 2378 transitions. [2020-11-12 09:42:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-12 09:42:12,670 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:12,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:12,672 INFO L225 Difference]: With dead ends: 1932 [2020-11-12 09:42:12,672 INFO L226 Difference]: Without dead ends: 1690 [2020-11-12 09:42:12,672 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=566, Invalid=1504, Unknown=0, NotChecked=0, Total=2070 [2020-11-12 09:42:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-11-12 09:42:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1131. [2020-11-12 09:42:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1067 states have (on average 1.3917525773195876) internal successors, (1485), 1130 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1485 transitions. [2020-11-12 09:42:12,683 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1485 transitions. Word has length 106 [2020-11-12 09:42:12,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:12,683 INFO L481 AbstractCegarLoop]: Abstraction has 1131 states and 1485 transitions. [2020-11-12 09:42:12,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1485 transitions. [2020-11-12 09:42:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:12,684 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:12,684 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:12,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-11-12 09:42:12,885 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1171878402, now seen corresponding path program 62 times [2020-11-12 09:42:12,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:12,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691271200] [2020-11-12 09:42:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:13,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691271200] [2020-11-12 09:42:13,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567968026] [2020-11-12 09:42:13,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:13,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:42:13,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:13,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:13,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:13,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:13,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 1 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:13,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:13,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:13,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385952379] [2020-11-12 09:42:13,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:13,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:13,436 INFO L87 Difference]: Start difference. First operand 1131 states and 1485 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:14,178 INFO L93 Difference]: Finished difference Result 1745 states and 2163 transitions. [2020-11-12 09:42:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-12 09:42:14,178 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:14,180 INFO L225 Difference]: With dead ends: 1745 [2020-11-12 09:42:14,180 INFO L226 Difference]: Without dead ends: 1503 [2020-11-12 09:42:14,180 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-11-12 09:42:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-11-12 09:42:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1138. [2020-11-12 09:42:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1074 states have (on average 1.3901303538175047) internal successors, (1493), 1137 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1493 transitions. [2020-11-12 09:42:14,191 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1493 transitions. Word has length 106 [2020-11-12 09:42:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:14,191 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1493 transitions. [2020-11-12 09:42:14,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1493 transitions. [2020-11-12 09:42:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:14,193 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:14,193 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:14,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-11-12 09:42:14,393 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash 636597438, now seen corresponding path program 63 times [2020-11-12 09:42:14,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:14,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052123755] [2020-11-12 09:42:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:14,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052123755] [2020-11-12 09:42:14,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726867462] [2020-11-12 09:42:14,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:14,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 09:42:14,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:14,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:14,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:14,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 4 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:14,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:14,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:14,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641248863] [2020-11-12 09:42:14,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:14,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:14,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:14,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:14,949 INFO L87 Difference]: Start difference. First operand 1138 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:15,791 INFO L93 Difference]: Finished difference Result 1732 states and 2147 transitions. [2020-11-12 09:42:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:42:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:15,793 INFO L225 Difference]: With dead ends: 1732 [2020-11-12 09:42:15,793 INFO L226 Difference]: Without dead ends: 1490 [2020-11-12 09:42:15,794 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 09:42:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-11-12 09:42:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1138. [2020-11-12 09:42:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1074 states have (on average 1.3901303538175047) internal successors, (1493), 1137 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1493 transitions. [2020-11-12 09:42:15,817 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1493 transitions. Word has length 106 [2020-11-12 09:42:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:15,817 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1493 transitions. [2020-11-12 09:42:15,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1493 transitions. [2020-11-12 09:42:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:15,818 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:15,818 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:16,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:16,019 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:16,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:16,020 INFO L82 PathProgramCache]: Analyzing trace with hash 796543870, now seen corresponding path program 64 times [2020-11-12 09:42:16,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:16,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077199786] [2020-11-12 09:42:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:16,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077199786] [2020-11-12 09:42:16,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975821363] [2020-11-12 09:42:16,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:16,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:42:16,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:16,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:16,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:16,508 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:16,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 4 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:16,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:16,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:16,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551944930] [2020-11-12 09:42:16,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:16,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:16,573 INFO L87 Difference]: Start difference. First operand 1138 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:17,536 INFO L93 Difference]: Finished difference Result 1710 states and 2121 transitions. [2020-11-12 09:42:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:42:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:17,537 INFO L225 Difference]: With dead ends: 1710 [2020-11-12 09:42:17,538 INFO L226 Difference]: Without dead ends: 1468 [2020-11-12 09:42:17,538 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 09:42:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2020-11-12 09:42:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1138. [2020-11-12 09:42:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1074 states have (on average 1.3901303538175047) internal successors, (1493), 1137 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1493 transitions. [2020-11-12 09:42:17,549 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1493 transitions. Word has length 106 [2020-11-12 09:42:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:17,549 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1493 transitions. [2020-11-12 09:42:17,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1493 transitions. [2020-11-12 09:42:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:17,550 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:17,550 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:17,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:17,751 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash -271822274, now seen corresponding path program 65 times [2020-11-12 09:42:17,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:17,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400387637] [2020-11-12 09:42:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:18,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400387637] [2020-11-12 09:42:18,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170415541] [2020-11-12 09:42:18,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:18,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 09:42:18,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:18,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:18,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:18,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:18,280 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 4 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:18,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:18,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:18,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104440245] [2020-11-12 09:42:18,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:18,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:18,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:18,300 INFO L87 Difference]: Start difference. First operand 1138 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:19,383 INFO L93 Difference]: Finished difference Result 1688 states and 2095 transitions. [2020-11-12 09:42:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:42:19,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:19,385 INFO L225 Difference]: With dead ends: 1688 [2020-11-12 09:42:19,385 INFO L226 Difference]: Without dead ends: 1446 [2020-11-12 09:42:19,386 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 09:42:19,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2020-11-12 09:42:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1138. [2020-11-12 09:42:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1074 states have (on average 1.3901303538175047) internal successors, (1493), 1137 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1493 transitions. [2020-11-12 09:42:19,400 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1493 transitions. Word has length 106 [2020-11-12 09:42:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:19,400 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1493 transitions. [2020-11-12 09:42:19,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1493 transitions. [2020-11-12 09:42:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:19,402 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:19,402 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:19,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:19,617 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash 519293182, now seen corresponding path program 66 times [2020-11-12 09:42:19,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:19,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922450411] [2020-11-12 09:42:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:19,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922450411] [2020-11-12 09:42:19,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985061033] [2020-11-12 09:42:19,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:20,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 09:42:20,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:20,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:20,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:20,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:20,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 4 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:20,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:20,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:20,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764813723] [2020-11-12 09:42:20,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:20,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:20,109 INFO L87 Difference]: Start difference. First operand 1138 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:21,295 INFO L93 Difference]: Finished difference Result 1666 states and 2069 transitions. [2020-11-12 09:42:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:42:21,295 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:21,296 INFO L225 Difference]: With dead ends: 1666 [2020-11-12 09:42:21,296 INFO L226 Difference]: Without dead ends: 1424 [2020-11-12 09:42:21,297 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 09:42:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-11-12 09:42:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1138. [2020-11-12 09:42:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1074 states have (on average 1.3901303538175047) internal successors, (1493), 1137 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1493 transitions. [2020-11-12 09:42:21,308 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1493 transitions. Word has length 106 [2020-11-12 09:42:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:21,308 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1493 transitions. [2020-11-12 09:42:21,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:21,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1493 transitions. [2020-11-12 09:42:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:21,309 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:21,309 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:21,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:21,510 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:21,511 INFO L82 PathProgramCache]: Analyzing trace with hash -738414658, now seen corresponding path program 67 times [2020-11-12 09:42:21,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:21,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487509332] [2020-11-12 09:42:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:21,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487509332] [2020-11-12 09:42:21,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498277212] [2020-11-12 09:42:21,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:21,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:21,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:21,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:22,002 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 4 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:22,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:22,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:22,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875600180] [2020-11-12 09:42:22,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:22,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:22,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:22,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:22,023 INFO L87 Difference]: Start difference. First operand 1138 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:23,315 INFO L93 Difference]: Finished difference Result 1644 states and 2043 transitions. [2020-11-12 09:42:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:42:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:23,316 INFO L225 Difference]: With dead ends: 1644 [2020-11-12 09:42:23,316 INFO L226 Difference]: Without dead ends: 1402 [2020-11-12 09:42:23,316 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 09:42:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-11-12 09:42:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1138. [2020-11-12 09:42:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1074 states have (on average 1.3901303538175047) internal successors, (1493), 1137 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1493 transitions. [2020-11-12 09:42:23,331 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1493 transitions. Word has length 106 [2020-11-12 09:42:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:23,331 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1493 transitions. [2020-11-12 09:42:23,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1493 transitions. [2020-11-12 09:42:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:23,332 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:23,332 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:23,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2020-11-12 09:42:23,533 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:23,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:23,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1112643970, now seen corresponding path program 68 times [2020-11-12 09:42:23,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:23,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127765399] [2020-11-12 09:42:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:23,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127765399] [2020-11-12 09:42:23,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036677673] [2020-11-12 09:42:23,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:23,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:42:23,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:23,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:23,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:24,032 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 4 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:24,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:24,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-12 09:42:24,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591394264] [2020-11-12 09:42:24,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:24,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:24,045 INFO L87 Difference]: Start difference. First operand 1138 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:25,486 INFO L93 Difference]: Finished difference Result 1639 states and 2039 transitions. [2020-11-12 09:42:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:42:25,486 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:25,487 INFO L225 Difference]: With dead ends: 1639 [2020-11-12 09:42:25,488 INFO L226 Difference]: Without dead ends: 1425 [2020-11-12 09:42:25,488 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=843, Invalid=2349, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 09:42:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2020-11-12 09:42:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1142. [2020-11-12 09:42:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1078 states have (on average 1.3896103896103895) internal successors, (1498), 1141 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1498 transitions. [2020-11-12 09:42:25,499 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1498 transitions. Word has length 106 [2020-11-12 09:42:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:25,499 INFO L481 AbstractCegarLoop]: Abstraction has 1142 states and 1498 transitions. [2020-11-12 09:42:25,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1498 transitions. [2020-11-12 09:42:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-12 09:42:25,500 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:25,500 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:25,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:25,701 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:25,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1338491732, now seen corresponding path program 69 times [2020-11-12 09:42:25,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:25,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609763536] [2020-11-12 09:42:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:26,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609763536] [2020-11-12 09:42:26,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663716845] [2020-11-12 09:42:26,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:26,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-12 09:42:26,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:26,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-12 09:42:26,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:26,138 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:26,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:26,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:26,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-11-12 09:42:26,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928681357] [2020-11-12 09:42:26,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-12 09:42:26,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-12 09:42:26,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-11-12 09:42:26,179 INFO L87 Difference]: Start difference. First operand 1142 states and 1498 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:27,685 INFO L93 Difference]: Finished difference Result 1935 states and 2408 transitions. [2020-11-12 09:42:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 09:42:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-11-12 09:42:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:27,688 INFO L225 Difference]: With dead ends: 1935 [2020-11-12 09:42:27,688 INFO L226 Difference]: Without dead ends: 1399 [2020-11-12 09:42:27,689 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 09:42:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2020-11-12 09:42:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1058. [2020-11-12 09:42:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 994 states have (on average 1.3933601609657948) internal successors, (1385), 1057 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1385 transitions. [2020-11-12 09:42:27,699 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1385 transitions. Word has length 106 [2020-11-12 09:42:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:27,699 INFO L481 AbstractCegarLoop]: Abstraction has 1058 states and 1385 transitions. [2020-11-12 09:42:27,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1385 transitions. [2020-11-12 09:42:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:27,700 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:27,700 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:27,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-11-12 09:42:27,901 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 272021267, now seen corresponding path program 70 times [2020-11-12 09:42:27,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:27,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9914019] [2020-11-12 09:42:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:28,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9914019] [2020-11-12 09:42:28,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026181321] [2020-11-12 09:42:28,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:28,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:42:28,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:28,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:42:28,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:28,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:28,451 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:28,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:28,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:28,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896641699] [2020-11-12 09:42:28,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:28,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:28,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:28,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:28,469 INFO L87 Difference]: Start difference. First operand 1058 states and 1385 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:29,265 INFO L93 Difference]: Finished difference Result 1696 states and 2093 transitions. [2020-11-12 09:42:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:42:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:29,266 INFO L225 Difference]: With dead ends: 1696 [2020-11-12 09:42:29,267 INFO L226 Difference]: Without dead ends: 1454 [2020-11-12 09:42:29,267 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2020-11-12 09:42:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-11-12 09:42:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1072. [2020-11-12 09:42:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1008 states have (on average 1.3918650793650793) internal successors, (1403), 1071 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1403 transitions. [2020-11-12 09:42:29,277 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1403 transitions. Word has length 111 [2020-11-12 09:42:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:29,277 INFO L481 AbstractCegarLoop]: Abstraction has 1072 states and 1403 transitions. [2020-11-12 09:42:29,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1403 transitions. [2020-11-12 09:42:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:29,278 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:29,278 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:29,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:29,479 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:29,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2080497107, now seen corresponding path program 71 times [2020-11-12 09:42:29,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:29,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406042815] [2020-11-12 09:42:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:29,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406042815] [2020-11-12 09:42:29,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530856063] [2020-11-12 09:42:29,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:29,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 09:42:29,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:29,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:29,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:30,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:30,019 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:30,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:30,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:30,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869647099] [2020-11-12 09:42:30,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:30,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:30,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:30,059 INFO L87 Difference]: Start difference. First operand 1072 states and 1403 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:30,992 INFO L93 Difference]: Finished difference Result 1697 states and 2095 transitions. [2020-11-12 09:42:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:42:30,992 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:30,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:30,993 INFO L225 Difference]: With dead ends: 1697 [2020-11-12 09:42:30,993 INFO L226 Difference]: Without dead ends: 1455 [2020-11-12 09:42:30,994 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 09:42:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-11-12 09:42:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1086. [2020-11-12 09:42:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1022 states have (on average 1.3904109589041096) internal successors, (1421), 1085 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1421 transitions. [2020-11-12 09:42:31,005 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1421 transitions. Word has length 111 [2020-11-12 09:42:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:31,005 INFO L481 AbstractCegarLoop]: Abstraction has 1086 states and 1421 transitions. [2020-11-12 09:42:31,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1421 transitions. [2020-11-12 09:42:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:31,006 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:31,006 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:31,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-11-12 09:42:31,207 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:31,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2054523757, now seen corresponding path program 72 times [2020-11-12 09:42:31,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:31,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893088119] [2020-11-12 09:42:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:31,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893088119] [2020-11-12 09:42:31,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027663134] [2020-11-12 09:42:31,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:31,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-12 09:42:31,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:31,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:31,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:31,731 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:31,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:31,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:31,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:31,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026897192] [2020-11-12 09:42:31,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:31,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:31,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:31,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:31,777 INFO L87 Difference]: Start difference. First operand 1086 states and 1421 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:32,810 INFO L93 Difference]: Finished difference Result 1698 states and 2097 transitions. [2020-11-12 09:42:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:42:32,811 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:32,812 INFO L225 Difference]: With dead ends: 1698 [2020-11-12 09:42:32,812 INFO L226 Difference]: Without dead ends: 1456 [2020-11-12 09:42:32,812 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2020-11-12 09:42:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-11-12 09:42:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1100. [2020-11-12 09:42:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1036 states have (on average 1.388996138996139) internal successors, (1439), 1099 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1439 transitions. [2020-11-12 09:42:32,822 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1439 transitions. Word has length 111 [2020-11-12 09:42:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:32,823 INFO L481 AbstractCegarLoop]: Abstraction has 1100 states and 1439 transitions. [2020-11-12 09:42:32,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1439 transitions. [2020-11-12 09:42:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:32,824 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:32,824 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:33,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:33,024 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:33,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1172077395, now seen corresponding path program 73 times [2020-11-12 09:42:33,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:33,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104043913] [2020-11-12 09:42:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:33,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104043913] [2020-11-12 09:42:33,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031982627] [2020-11-12 09:42:33,427 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:33,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:33,552 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:33,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:33,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:33,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:33,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824426270] [2020-11-12 09:42:33,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:33,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:33,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:33,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:33,586 INFO L87 Difference]: Start difference. First operand 1100 states and 1439 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:34,744 INFO L93 Difference]: Finished difference Result 1699 states and 2099 transitions. [2020-11-12 09:42:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:42:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:34,746 INFO L225 Difference]: With dead ends: 1699 [2020-11-12 09:42:34,746 INFO L226 Difference]: Without dead ends: 1457 [2020-11-12 09:42:34,746 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 09:42:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-11-12 09:42:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1114. [2020-11-12 09:42:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1050 states have (on average 1.3876190476190475) internal successors, (1457), 1113 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1457 transitions. [2020-11-12 09:42:34,756 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1457 transitions. Word has length 111 [2020-11-12 09:42:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:34,757 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 1457 transitions. [2020-11-12 09:42:34,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1457 transitions. [2020-11-12 09:42:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:34,758 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:34,758 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:34,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:34,958 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1963192851, now seen corresponding path program 74 times [2020-11-12 09:42:34,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:34,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591056729] [2020-11-12 09:42:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:35,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591056729] [2020-11-12 09:42:35,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382899736] [2020-11-12 09:42:35,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:35,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:42:35,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:35,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:35,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:35,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:35,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:35,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:35,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:35,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533300038] [2020-11-12 09:42:35,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:35,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:35,462 INFO L87 Difference]: Start difference. First operand 1114 states and 1457 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:36,726 INFO L93 Difference]: Finished difference Result 1700 states and 2101 transitions. [2020-11-12 09:42:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:42:36,726 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:36,728 INFO L225 Difference]: With dead ends: 1700 [2020-11-12 09:42:36,728 INFO L226 Difference]: Without dead ends: 1458 [2020-11-12 09:42:36,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2020-11-12 09:42:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-11-12 09:42:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1128. [2020-11-12 09:42:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1064 states have (on average 1.3862781954887218) internal successors, (1475), 1127 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1475 transitions. [2020-11-12 09:42:36,738 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1475 transitions. Word has length 111 [2020-11-12 09:42:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:36,739 INFO L481 AbstractCegarLoop]: Abstraction has 1128 states and 1475 transitions. [2020-11-12 09:42:36,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1475 transitions. [2020-11-12 09:42:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:36,740 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:36,740 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:36,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:36,940 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 705485011, now seen corresponding path program 75 times [2020-11-12 09:42:36,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:36,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324992653] [2020-11-12 09:42:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:37,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324992653] [2020-11-12 09:42:37,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004661305] [2020-11-12 09:42:37,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:37,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 09:42:37,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:37,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:37,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:37,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:37,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:37,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:37,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:37,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507605032] [2020-11-12 09:42:37,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:37,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:37,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:37,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:37,459 INFO L87 Difference]: Start difference. First operand 1128 states and 1475 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:38,850 INFO L93 Difference]: Finished difference Result 1701 states and 2103 transitions. [2020-11-12 09:42:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:42:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:38,851 INFO L225 Difference]: With dead ends: 1701 [2020-11-12 09:42:38,851 INFO L226 Difference]: Without dead ends: 1459 [2020-11-12 09:42:38,851 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 09:42:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-11-12 09:42:38,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1142. [2020-11-12 09:42:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1078 states have (on average 1.3849721706864564) internal successors, (1493), 1141 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1493 transitions. [2020-11-12 09:42:38,862 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1493 transitions. Word has length 111 [2020-11-12 09:42:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:38,862 INFO L481 AbstractCegarLoop]: Abstraction has 1142 states and 1493 transitions. [2020-11-12 09:42:38,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1493 transitions. [2020-11-12 09:42:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:38,863 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:38,864 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:39,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:39,064 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash 331255699, now seen corresponding path program 76 times [2020-11-12 09:42:39,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:39,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188911763] [2020-11-12 09:42:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:39,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188911763] [2020-11-12 09:42:39,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867169233] [2020-11-12 09:42:39,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:39,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:42:39,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:39,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:42:39,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:39,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:39,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 4 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:39,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:39,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:39,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494239226] [2020-11-12 09:42:39,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:39,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:39,569 INFO L87 Difference]: Start difference. First operand 1142 states and 1493 transitions. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:41,035 INFO L93 Difference]: Finished difference Result 1705 states and 2115 transitions. [2020-11-12 09:42:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:42:41,036 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:41,037 INFO L225 Difference]: With dead ends: 1705 [2020-11-12 09:42:41,037 INFO L226 Difference]: Without dead ends: 1491 [2020-11-12 09:42:41,037 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2020-11-12 09:42:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2020-11-12 09:42:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1156. [2020-11-12 09:42:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1092 states have (on average 1.3882783882783882) internal successors, (1516), 1155 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1516 transitions. [2020-11-12 09:42:41,048 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1516 transitions. Word has length 111 [2020-11-12 09:42:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:41,048 INFO L481 AbstractCegarLoop]: Abstraction has 1156 states and 1516 transitions. [2020-11-12 09:42:41,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1516 transitions. [2020-11-12 09:42:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-12 09:42:41,049 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:41,049 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:41,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:41,252 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1512575895, now seen corresponding path program 77 times [2020-11-12 09:42:41,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:41,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118326915] [2020-11-12 09:42:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:41,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118326915] [2020-11-12 09:42:41,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87251814] [2020-11-12 09:42:41,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:41,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-12 09:42:41,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:41,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-12 09:42:41,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:41,774 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:41,793 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:41,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:41,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-11-12 09:42:41,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988853522] [2020-11-12 09:42:41,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-12 09:42:41,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:41,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-12 09:42:41,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-11-12 09:42:41,812 INFO L87 Difference]: Start difference. First operand 1156 states and 1516 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:43,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:43,294 INFO L93 Difference]: Finished difference Result 2010 states and 2494 transitions. [2020-11-12 09:42:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-12 09:42:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-11-12 09:42:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:43,297 INFO L225 Difference]: With dead ends: 2010 [2020-11-12 09:42:43,297 INFO L226 Difference]: Without dead ends: 1474 [2020-11-12 09:42:43,297 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1036, Invalid=2624, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 09:42:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2020-11-12 09:42:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1056. [2020-11-12 09:42:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 992 states have (on average 1.3931451612903225) internal successors, (1382), 1055 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1382 transitions. [2020-11-12 09:42:43,308 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1382 transitions. Word has length 111 [2020-11-12 09:42:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:43,308 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1382 transitions. [2020-11-12 09:42:43,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1382 transitions. [2020-11-12 09:42:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:43,310 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:43,310 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:43,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:43,511 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash -710502551, now seen corresponding path program 78 times [2020-11-12 09:42:43,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:43,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595553883] [2020-11-12 09:42:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:43,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595553883] [2020-11-12 09:42:43,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637457789] [2020-11-12 09:42:43,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:44,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 09:42:44,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:42:44,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:44,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:44,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:44,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:44,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:42:44,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674237395] [2020-11-12 09:42:44,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:42:44,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:44,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:42:44,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:42:44,151 INFO L87 Difference]: Start difference. First operand 1056 states and 1382 transitions. Second operand has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:44,998 INFO L93 Difference]: Finished difference Result 1881 states and 2303 transitions. [2020-11-12 09:42:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-12 09:42:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:45,001 INFO L225 Difference]: With dead ends: 1881 [2020-11-12 09:42:45,001 INFO L226 Difference]: Without dead ends: 1639 [2020-11-12 09:42:45,001 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=639, Invalid=1713, Unknown=0, NotChecked=0, Total=2352 [2020-11-12 09:42:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-11-12 09:42:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1066. [2020-11-12 09:42:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1002 states have (on average 1.3912175648702594) internal successors, (1394), 1065 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1394 transitions. [2020-11-12 09:42:45,013 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1394 transitions. Word has length 116 [2020-11-12 09:42:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:45,013 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 1394 transitions. [2020-11-12 09:42:45,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1394 transitions. [2020-11-12 09:42:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:45,014 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:45,014 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:45,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:45,215 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2027081815, now seen corresponding path program 79 times [2020-11-12 09:42:45,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:45,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957087724] [2020-11-12 09:42:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:45,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957087724] [2020-11-12 09:42:45,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997205291] [2020-11-12 09:42:45,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:45,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:45,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:45,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:45,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 1 proven. 311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:45,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:45,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:45,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531072700] [2020-11-12 09:42:45,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:45,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:45,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:45,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:45,843 INFO L87 Difference]: Start difference. First operand 1066 states and 1394 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:46,729 INFO L93 Difference]: Finished difference Result 1738 states and 2141 transitions. [2020-11-12 09:42:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-12 09:42:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:46,730 INFO L225 Difference]: With dead ends: 1738 [2020-11-12 09:42:46,730 INFO L226 Difference]: Without dead ends: 1496 [2020-11-12 09:42:46,731 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2020-11-12 09:42:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-11-12 09:42:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1089. [2020-11-12 09:42:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1025 states have (on average 1.3882926829268292) internal successors, (1423), 1088 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1423 transitions. [2020-11-12 09:42:46,741 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1423 transitions. Word has length 116 [2020-11-12 09:42:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:46,742 INFO L481 AbstractCegarLoop]: Abstraction has 1089 states and 1423 transitions. [2020-11-12 09:42:46,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1423 transitions. [2020-11-12 09:42:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:46,743 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:46,743 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:46,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-11-12 09:42:46,957 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:46,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1891178903, now seen corresponding path program 80 times [2020-11-12 09:42:46,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:46,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503585500] [2020-11-12 09:42:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:47,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503585500] [2020-11-12 09:42:47,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800515969] [2020-11-12 09:42:47,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:47,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:42:47,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:47,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:47,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:47,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:47,560 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:47,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:47,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:47,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232682904] [2020-11-12 09:42:47,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:47,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:47,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:47,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:47,580 INFO L87 Difference]: Start difference. First operand 1089 states and 1423 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:48,617 INFO L93 Difference]: Finished difference Result 1739 states and 2143 transitions. [2020-11-12 09:42:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:42:48,617 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:48,619 INFO L225 Difference]: With dead ends: 1739 [2020-11-12 09:42:48,619 INFO L226 Difference]: Without dead ends: 1497 [2020-11-12 09:42:48,620 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2020-11-12 09:42:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2020-11-12 09:42:48,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1103. [2020-11-12 09:42:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1039 states have (on average 1.3869104908565928) internal successors, (1441), 1102 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1441 transitions. [2020-11-12 09:42:48,630 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1441 transitions. Word has length 116 [2020-11-12 09:42:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:48,630 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1441 transitions. [2020-11-12 09:42:48,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1441 transitions. [2020-11-12 09:42:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:48,631 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:48,631 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:48,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:48,832 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:48,832 INFO L82 PathProgramCache]: Analyzing trace with hash -82703063, now seen corresponding path program 81 times [2020-11-12 09:42:48,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:48,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083087876] [2020-11-12 09:42:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:49,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083087876] [2020-11-12 09:42:49,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472714661] [2020-11-12 09:42:49,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:49,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 09:42:49,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:49,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:49,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:49,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:49,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:49,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516088412] [2020-11-12 09:42:49,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:49,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:49,417 INFO L87 Difference]: Start difference. First operand 1103 states and 1441 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:50,520 INFO L93 Difference]: Finished difference Result 1731 states and 2135 transitions. [2020-11-12 09:42:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:42:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:50,522 INFO L225 Difference]: With dead ends: 1731 [2020-11-12 09:42:50,522 INFO L226 Difference]: Without dead ends: 1489 [2020-11-12 09:42:50,522 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 09:42:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-11-12 09:42:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1117. [2020-11-12 09:42:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1053 states have (on average 1.3855650522317189) internal successors, (1459), 1116 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1459 transitions. [2020-11-12 09:42:50,532 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1459 transitions. Word has length 116 [2020-11-12 09:42:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:50,532 INFO L481 AbstractCegarLoop]: Abstraction has 1117 states and 1459 transitions. [2020-11-12 09:42:50,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1459 transitions. [2020-11-12 09:42:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:50,533 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:50,534 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:50,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-11-12 09:42:50,734 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:50,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:50,735 INFO L82 PathProgramCache]: Analyzing trace with hash 77243369, now seen corresponding path program 82 times [2020-11-12 09:42:50,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:50,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299542501] [2020-11-12 09:42:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:51,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299542501] [2020-11-12 09:42:51,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766142572] [2020-11-12 09:42:51,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:51,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:42:51,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:51,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:42:51,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:51,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:51,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:51,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:51,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:51,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509639656] [2020-11-12 09:42:51,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:51,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:51,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:51,320 INFO L87 Difference]: Start difference. First operand 1117 states and 1459 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:52,541 INFO L93 Difference]: Finished difference Result 1723 states and 2127 transitions. [2020-11-12 09:42:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:42:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:52,543 INFO L225 Difference]: With dead ends: 1723 [2020-11-12 09:42:52,543 INFO L226 Difference]: Without dead ends: 1481 [2020-11-12 09:42:52,544 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 09:42:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-11-12 09:42:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1131. [2020-11-12 09:42:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1067 states have (on average 1.3842549203373946) internal successors, (1477), 1130 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1477 transitions. [2020-11-12 09:42:52,556 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1477 transitions. Word has length 116 [2020-11-12 09:42:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:52,556 INFO L481 AbstractCegarLoop]: Abstraction has 1131 states and 1477 transitions. [2020-11-12 09:42:52,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1477 transitions. [2020-11-12 09:42:52,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:52,557 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:52,557 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:52,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:52,758 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:52,759 INFO L82 PathProgramCache]: Analyzing trace with hash -991122775, now seen corresponding path program 83 times [2020-11-12 09:42:52,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:52,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974929785] [2020-11-12 09:42:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:53,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974929785] [2020-11-12 09:42:53,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405659029] [2020-11-12 09:42:53,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:53,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 09:42:53,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:53,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:53,278 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:53,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:53,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:53,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:53,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762121437] [2020-11-12 09:42:53,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:53,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:53,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:53,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:53,318 INFO L87 Difference]: Start difference. First operand 1131 states and 1477 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:54,652 INFO L93 Difference]: Finished difference Result 1715 states and 2119 transitions. [2020-11-12 09:42:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:42:54,652 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:54,653 INFO L225 Difference]: With dead ends: 1715 [2020-11-12 09:42:54,653 INFO L226 Difference]: Without dead ends: 1473 [2020-11-12 09:42:54,654 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 09:42:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-11-12 09:42:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1145. [2020-11-12 09:42:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1081 states have (on average 1.3829787234042554) internal successors, (1495), 1144 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1495 transitions. [2020-11-12 09:42:54,664 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1495 transitions. Word has length 116 [2020-11-12 09:42:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:54,665 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 1495 transitions. [2020-11-12 09:42:54,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1495 transitions. [2020-11-12 09:42:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:54,666 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:54,666 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:54,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:54,867 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:54,867 INFO L82 PathProgramCache]: Analyzing trace with hash -200007319, now seen corresponding path program 84 times [2020-11-12 09:42:54,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:54,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899086558] [2020-11-12 09:42:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:55,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899086558] [2020-11-12 09:42:55,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190103388] [2020-11-12 09:42:55,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:55,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 09:42:55,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:55,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:55,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:55,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:55,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:55,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:55,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:55,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102112311] [2020-11-12 09:42:55,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:55,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:55,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:55,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:55,425 INFO L87 Difference]: Start difference. First operand 1145 states and 1495 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:56,903 INFO L93 Difference]: Finished difference Result 1707 states and 2111 transitions. [2020-11-12 09:42:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:42:56,903 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:56,905 INFO L225 Difference]: With dead ends: 1707 [2020-11-12 09:42:56,905 INFO L226 Difference]: Without dead ends: 1465 [2020-11-12 09:42:56,905 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 09:42:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2020-11-12 09:42:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1159. [2020-11-12 09:42:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1095 states have (on average 1.3817351598173515) internal successors, (1513), 1158 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1513 transitions. [2020-11-12 09:42:56,917 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1513 transitions. Word has length 116 [2020-11-12 09:42:56,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:56,917 INFO L481 AbstractCegarLoop]: Abstraction has 1159 states and 1513 transitions. [2020-11-12 09:42:56,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:56,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1513 transitions. [2020-11-12 09:42:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:56,918 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:56,918 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:57,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:57,119 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1457715159, now seen corresponding path program 85 times [2020-11-12 09:42:57,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:57,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110395889] [2020-11-12 09:42:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110395889] [2020-11-12 09:42:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348700537] [2020-11-12 09:42:57,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:57,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:57,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:57,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:57,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:57,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:57,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:57,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545153356] [2020-11-12 09:42:57,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:57,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:57,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:57,662 INFO L87 Difference]: Start difference. First operand 1159 states and 1513 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:42:59,235 INFO L93 Difference]: Finished difference Result 1699 states and 2103 transitions. [2020-11-12 09:42:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:42:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:42:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:42:59,237 INFO L225 Difference]: With dead ends: 1699 [2020-11-12 09:42:59,237 INFO L226 Difference]: Without dead ends: 1457 [2020-11-12 09:42:59,238 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 09:42:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-11-12 09:42:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1173. [2020-11-12 09:42:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1109 states have (on average 1.3805229936880072) internal successors, (1531), 1172 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1531 transitions. [2020-11-12 09:42:59,249 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1531 transitions. Word has length 116 [2020-11-12 09:42:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:42:59,249 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1531 transitions. [2020-11-12 09:42:59,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:42:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1531 transitions. [2020-11-12 09:42:59,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:42:59,250 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:42:59,250 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:42:59,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:59,451 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:42:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:42:59,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1831944471, now seen corresponding path program 86 times [2020-11-12 09:42:59,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:42:59,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861697741] [2020-11-12 09:42:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:42:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:42:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861697741] [2020-11-12 09:42:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982127846] [2020-11-12 09:42:59,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:42:59,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:42:59,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:42:59,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:42:59,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:42:59,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:42:59,970 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:42:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:42:59,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:42:59,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:42:59,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818740935] [2020-11-12 09:42:59,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:42:59,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:42:59,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:42:59,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:42:59,988 INFO L87 Difference]: Start difference. First operand 1173 states and 1531 transitions. Second operand has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:01,694 INFO L93 Difference]: Finished difference Result 1704 states and 2117 transitions. [2020-11-12 09:43:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:43:01,695 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:43:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:01,696 INFO L225 Difference]: With dead ends: 1704 [2020-11-12 09:43:01,696 INFO L226 Difference]: Without dead ends: 1490 [2020-11-12 09:43:01,697 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1016, Invalid=2766, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:43:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-11-12 09:43:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1187. [2020-11-12 09:43:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1123 states have (on average 1.383793410507569) internal successors, (1554), 1186 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1554 transitions. [2020-11-12 09:43:01,708 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1554 transitions. Word has length 116 [2020-11-12 09:43:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:01,708 INFO L481 AbstractCegarLoop]: Abstraction has 1187 states and 1554 transitions. [2020-11-12 09:43:01,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.125) internal successors, (123), 24 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:01,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1554 transitions. [2020-11-12 09:43:01,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-12 09:43:01,709 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:01,709 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:01,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:01,910 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:01,911 INFO L82 PathProgramCache]: Analyzing trace with hash 619191231, now seen corresponding path program 87 times [2020-11-12 09:43:01,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:01,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256435386] [2020-11-12 09:43:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:02,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256435386] [2020-11-12 09:43:02,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103343363] [2020-11-12 09:43:02,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:02,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 09:43:02,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:02,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-12 09:43:02,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:02,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:02,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:02,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:02,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-11-12 09:43:02,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003781217] [2020-11-12 09:43:02,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-12 09:43:02,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:02,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-12 09:43:02,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-11-12 09:43:02,456 INFO L87 Difference]: Start difference. First operand 1187 states and 1554 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:04,195 INFO L93 Difference]: Finished difference Result 2000 states and 2486 transitions. [2020-11-12 09:43:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-12 09:43:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-11-12 09:43:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:04,197 INFO L225 Difference]: With dead ends: 2000 [2020-11-12 09:43:04,197 INFO L226 Difference]: Without dead ends: 1464 [2020-11-12 09:43:04,198 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:43:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2020-11-12 09:43:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1089. [2020-11-12 09:43:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1025 states have (on average 1.3882926829268292) internal successors, (1423), 1088 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1423 transitions. [2020-11-12 09:43:04,211 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1423 transitions. Word has length 116 [2020-11-12 09:43:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:04,211 INFO L481 AbstractCegarLoop]: Abstraction has 1089 states and 1423 transitions. [2020-11-12 09:43:04,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1423 transitions. [2020-11-12 09:43:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:04,212 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:04,212 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:04,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:04,413 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:04,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1621148286, now seen corresponding path program 88 times [2020-11-12 09:43:04,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:04,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760598266] [2020-11-12 09:43:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:04,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760598266] [2020-11-12 09:43:04,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851690996] [2020-11-12 09:43:04,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:05,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:43:05,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:05,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:05,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:05,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:05,110 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:05,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:05,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:05,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14745671] [2020-11-12 09:43:05,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:05,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:05,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:05,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:05,134 INFO L87 Difference]: Start difference. First operand 1089 states and 1423 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:06,069 INFO L93 Difference]: Finished difference Result 1769 states and 2179 transitions. [2020-11-12 09:43:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:43:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:06,070 INFO L225 Difference]: With dead ends: 1769 [2020-11-12 09:43:06,070 INFO L226 Difference]: Without dead ends: 1527 [2020-11-12 09:43:06,071 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 09:43:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-11-12 09:43:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1103. [2020-11-12 09:43:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1039 states have (on average 1.3869104908565928) internal successors, (1441), 1102 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1441 transitions. [2020-11-12 09:43:06,081 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1441 transitions. Word has length 121 [2020-11-12 09:43:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:06,081 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1441 transitions. [2020-11-12 09:43:06,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1441 transitions. [2020-11-12 09:43:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:06,083 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:06,084 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:06,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-11-12 09:43:06,284 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1757051198, now seen corresponding path program 89 times [2020-11-12 09:43:06,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:06,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935670755] [2020-11-12 09:43:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:06,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935670755] [2020-11-12 09:43:06,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064812895] [2020-11-12 09:43:06,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:06,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 09:43:06,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:06,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:06,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:06,955 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:06,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:06,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:06,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681629733] [2020-11-12 09:43:06,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:06,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:06,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:06,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:06,976 INFO L87 Difference]: Start difference. First operand 1103 states and 1441 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:08,064 INFO L93 Difference]: Finished difference Result 1770 states and 2181 transitions. [2020-11-12 09:43:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:43:08,064 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:08,067 INFO L225 Difference]: With dead ends: 1770 [2020-11-12 09:43:08,067 INFO L226 Difference]: Without dead ends: 1528 [2020-11-12 09:43:08,067 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 09:43:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-11-12 09:43:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1117. [2020-11-12 09:43:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1053 states have (on average 1.3855650522317189) internal successors, (1459), 1116 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1459 transitions. [2020-11-12 09:43:08,082 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1459 transitions. Word has length 121 [2020-11-12 09:43:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:08,082 INFO L481 AbstractCegarLoop]: Abstraction has 1117 states and 1459 transitions. [2020-11-12 09:43:08,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1459 transitions. [2020-11-12 09:43:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:08,084 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:08,084 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:08,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:08,285 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:08,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:08,285 INFO L82 PathProgramCache]: Analyzing trace with hash -729440258, now seen corresponding path program 90 times [2020-11-12 09:43:08,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:08,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205777682] [2020-11-12 09:43:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:08,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205777682] [2020-11-12 09:43:08,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668625493] [2020-11-12 09:43:08,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:08,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 09:43:08,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:08,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:08,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:08,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:08,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:08,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:08,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:08,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648119023] [2020-11-12 09:43:08,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:08,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:08,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:08,951 INFO L87 Difference]: Start difference. First operand 1117 states and 1459 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:10,156 INFO L93 Difference]: Finished difference Result 1771 states and 2183 transitions. [2020-11-12 09:43:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:43:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:10,158 INFO L225 Difference]: With dead ends: 1771 [2020-11-12 09:43:10,158 INFO L226 Difference]: Without dead ends: 1529 [2020-11-12 09:43:10,158 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 09:43:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2020-11-12 09:43:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1131. [2020-11-12 09:43:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1067 states have (on average 1.3842549203373946) internal successors, (1477), 1130 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1477 transitions. [2020-11-12 09:43:10,169 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1477 transitions. Word has length 121 [2020-11-12 09:43:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:10,169 INFO L481 AbstractCegarLoop]: Abstraction has 1131 states and 1477 transitions. [2020-11-12 09:43:10,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1477 transitions. [2020-11-12 09:43:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:10,170 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:10,170 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:10,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2020-11-12 09:43:10,371 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash -569493826, now seen corresponding path program 91 times [2020-11-12 09:43:10,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:10,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643423802] [2020-11-12 09:43:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:10,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643423802] [2020-11-12 09:43:10,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990183112] [2020-11-12 09:43:10,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:10,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:10,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:10,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:11,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:11,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:11,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:11,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795192626] [2020-11-12 09:43:11,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:11,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:11,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:11,019 INFO L87 Difference]: Start difference. First operand 1131 states and 1477 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:12,342 INFO L93 Difference]: Finished difference Result 1772 states and 2185 transitions. [2020-11-12 09:43:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:43:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:12,344 INFO L225 Difference]: With dead ends: 1772 [2020-11-12 09:43:12,344 INFO L226 Difference]: Without dead ends: 1530 [2020-11-12 09:43:12,344 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 09:43:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-11-12 09:43:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1145. [2020-11-12 09:43:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1081 states have (on average 1.3829787234042554) internal successors, (1495), 1144 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1495 transitions. [2020-11-12 09:43:12,355 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1495 transitions. Word has length 121 [2020-11-12 09:43:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:12,355 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 1495 transitions. [2020-11-12 09:43:12,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1495 transitions. [2020-11-12 09:43:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:12,357 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:12,357 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:12,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:12,559 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:12,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:12,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1637859970, now seen corresponding path program 92 times [2020-11-12 09:43:12,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:12,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240653735] [2020-11-12 09:43:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:12,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240653735] [2020-11-12 09:43:12,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760824878] [2020-11-12 09:43:12,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:13,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:43:13,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:13,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:13,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:13,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:13,181 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:13,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:13,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:13,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576216677] [2020-11-12 09:43:13,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:13,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:13,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:13,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:13,200 INFO L87 Difference]: Start difference. First operand 1145 states and 1495 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:14,615 INFO L93 Difference]: Finished difference Result 1773 states and 2187 transitions. [2020-11-12 09:43:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:43:14,615 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:14,617 INFO L225 Difference]: With dead ends: 1773 [2020-11-12 09:43:14,617 INFO L226 Difference]: Without dead ends: 1531 [2020-11-12 09:43:14,617 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 09:43:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-11-12 09:43:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1159. [2020-11-12 09:43:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1095 states have (on average 1.3817351598173515) internal successors, (1513), 1158 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1513 transitions. [2020-11-12 09:43:14,631 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1513 transitions. Word has length 121 [2020-11-12 09:43:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:14,632 INFO L481 AbstractCegarLoop]: Abstraction has 1159 states and 1513 transitions. [2020-11-12 09:43:14,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1513 transitions. [2020-11-12 09:43:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:14,633 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:14,633 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:14,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:14,847 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:14,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:14,847 INFO L82 PathProgramCache]: Analyzing trace with hash -846744514, now seen corresponding path program 93 times [2020-11-12 09:43:14,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:14,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32964815] [2020-11-12 09:43:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:15,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32964815] [2020-11-12 09:43:15,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738131079] [2020-11-12 09:43:15,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:15,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-11-12 09:43:15,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:15,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:15,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:15,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:15,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:15,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:15,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:15,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597696982] [2020-11-12 09:43:15,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:15,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:15,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:15,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:15,476 INFO L87 Difference]: Start difference. First operand 1159 states and 1513 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:17,073 INFO L93 Difference]: Finished difference Result 1774 states and 2189 transitions. [2020-11-12 09:43:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:43:17,074 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:17,075 INFO L225 Difference]: With dead ends: 1774 [2020-11-12 09:43:17,075 INFO L226 Difference]: Without dead ends: 1532 [2020-11-12 09:43:17,075 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:43:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-11-12 09:43:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1173. [2020-11-12 09:43:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1109 states have (on average 1.3805229936880072) internal successors, (1531), 1172 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1531 transitions. [2020-11-12 09:43:17,087 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1531 transitions. Word has length 121 [2020-11-12 09:43:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:17,088 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1531 transitions. [2020-11-12 09:43:17,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1531 transitions. [2020-11-12 09:43:17,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:17,088 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:17,089 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:17,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-11-12 09:43:17,289 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:17,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:17,290 INFO L82 PathProgramCache]: Analyzing trace with hash -2104452354, now seen corresponding path program 94 times [2020-11-12 09:43:17,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:17,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064328224] [2020-11-12 09:43:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:17,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064328224] [2020-11-12 09:43:17,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806116378] [2020-11-12 09:43:17,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:17,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:43:17,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:17,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:17,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:17,831 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:17,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:17,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:17,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:17,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485046348] [2020-11-12 09:43:17,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:17,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:17,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:17,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:17,900 INFO L87 Difference]: Start difference. First operand 1173 states and 1531 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:19,594 INFO L93 Difference]: Finished difference Result 1775 states and 2191 transitions. [2020-11-12 09:43:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:43:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:19,595 INFO L225 Difference]: With dead ends: 1775 [2020-11-12 09:43:19,595 INFO L226 Difference]: Without dead ends: 1533 [2020-11-12 09:43:19,596 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:43:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2020-11-12 09:43:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1187. [2020-11-12 09:43:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1123 states have (on average 1.379341050756901) internal successors, (1549), 1186 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1549 transitions. [2020-11-12 09:43:19,607 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1549 transitions. Word has length 121 [2020-11-12 09:43:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:19,607 INFO L481 AbstractCegarLoop]: Abstraction has 1187 states and 1549 transitions. [2020-11-12 09:43:19,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1549 transitions. [2020-11-12 09:43:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:19,608 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:19,608 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:19,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-11-12 09:43:19,810 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1816285630, now seen corresponding path program 95 times [2020-11-12 09:43:19,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:19,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848956065] [2020-11-12 09:43:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:20,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848956065] [2020-11-12 09:43:20,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053206026] [2020-11-12 09:43:20,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:20,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-12 09:43:20,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:20,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:20,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:20,344 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:20,395 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:20,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:20,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:20,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216963381] [2020-11-12 09:43:20,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:20,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:20,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:20,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:20,410 INFO L87 Difference]: Start difference. First operand 1187 states and 1549 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:22,207 INFO L93 Difference]: Finished difference Result 1779 states and 2203 transitions. [2020-11-12 09:43:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:43:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:22,209 INFO L225 Difference]: With dead ends: 1779 [2020-11-12 09:43:22,209 INFO L226 Difference]: Without dead ends: 1565 [2020-11-12 09:43:22,210 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:43:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-11-12 09:43:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1201. [2020-11-12 09:43:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1137 states have (on average 1.3825857519788918) internal successors, (1572), 1200 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1572 transitions. [2020-11-12 09:43:22,231 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1572 transitions. Word has length 121 [2020-11-12 09:43:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:22,231 INFO L481 AbstractCegarLoop]: Abstraction has 1201 states and 1572 transitions. [2020-11-12 09:43:22,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1572 transitions. [2020-11-12 09:43:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-12 09:43:22,232 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:22,232 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:22,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:22,433 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:22,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:22,433 INFO L82 PathProgramCache]: Analyzing trace with hash -27545964, now seen corresponding path program 96 times [2020-11-12 09:43:22,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:22,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618491799] [2020-11-12 09:43:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:22,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618491799] [2020-11-12 09:43:22,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915071123] [2020-11-12 09:43:22,844 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:22,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-11-12 09:43:22,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:22,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-12 09:43:22,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:22,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:23,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:23,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:23,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-12 09:43:23,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145754319] [2020-11-12 09:43:23,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:23,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:23,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:23,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:23,024 INFO L87 Difference]: Start difference. First operand 1201 states and 1572 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:25,038 INFO L93 Difference]: Finished difference Result 2311 states and 2764 transitions. [2020-11-12 09:43:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 09:43:25,038 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-11-12 09:43:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:25,040 INFO L225 Difference]: With dead ends: 2311 [2020-11-12 09:43:25,040 INFO L226 Difference]: Without dead ends: 1577 [2020-11-12 09:43:25,041 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1326, Invalid=3644, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 09:43:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-11-12 09:43:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1211. [2020-11-12 09:43:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1147 states have (on average 1.3818657367044465) internal successors, (1585), 1210 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1585 transitions. [2020-11-12 09:43:25,052 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1585 transitions. Word has length 121 [2020-11-12 09:43:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:25,052 INFO L481 AbstractCegarLoop]: Abstraction has 1211 states and 1585 transitions. [2020-11-12 09:43:25,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1585 transitions. [2020-11-12 09:43:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:25,053 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:25,053 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:25,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-11-12 09:43:25,261 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:25,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2004045996, now seen corresponding path program 97 times [2020-11-12 09:43:25,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:25,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716514143] [2020-11-12 09:43:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:25,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716514143] [2020-11-12 09:43:25,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31942386] [2020-11-12 09:43:25,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:25,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:25,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:25,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:25,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:25,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:25,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:43:25,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037585724] [2020-11-12 09:43:25,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:43:25,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:43:25,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:43:25,997 INFO L87 Difference]: Start difference. First operand 1211 states and 1585 transitions. Second operand has 28 states, 28 states have (on average 5.285714285714286) internal successors, (148), 28 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:26,996 INFO L93 Difference]: Finished difference Result 2050 states and 2522 transitions. [2020-11-12 09:43:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-12 09:43:26,996 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.285714285714286) internal successors, (148), 28 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:26,998 INFO L225 Difference]: With dead ends: 2050 [2020-11-12 09:43:26,998 INFO L226 Difference]: Without dead ends: 1808 [2020-11-12 09:43:26,999 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=754, Invalid=2002, Unknown=0, NotChecked=0, Total=2756 [2020-11-12 09:43:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-11-12 09:43:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1221. [2020-11-12 09:43:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1157 states have (on average 1.3802938634399309) internal successors, (1597), 1220 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1597 transitions. [2020-11-12 09:43:27,011 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1597 transitions. Word has length 126 [2020-11-12 09:43:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:27,012 INFO L481 AbstractCegarLoop]: Abstraction has 1221 states and 1597 transitions. [2020-11-12 09:43:27,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.285714285714286) internal successors, (148), 28 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1597 transitions. [2020-11-12 09:43:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:27,012 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:27,013 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:27,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:27,213 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:27,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:27,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1914570860, now seen corresponding path program 98 times [2020-11-12 09:43:27,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:27,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039059622] [2020-11-12 09:43:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:27,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039059622] [2020-11-12 09:43:27,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135472929] [2020-11-12 09:43:27,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:27,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:43:27,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:27,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:27,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:27,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 1 proven. 395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:27,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:27,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:27,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195502374] [2020-11-12 09:43:27,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:27,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:27,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:27,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:27,978 INFO L87 Difference]: Start difference. First operand 1221 states and 1597 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:28,979 INFO L93 Difference]: Finished difference Result 1919 states and 2371 transitions. [2020-11-12 09:43:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-12 09:43:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:28,982 INFO L225 Difference]: With dead ends: 1919 [2020-11-12 09:43:28,982 INFO L226 Difference]: Without dead ends: 1677 [2020-11-12 09:43:28,982 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2020-11-12 09:43:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2020-11-12 09:43:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1228. [2020-11-12 09:43:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:28,994 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:28,994 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:28,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:28,995 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:28,995 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:29,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-11-12 09:43:29,196 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:29,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1297497684, now seen corresponding path program 99 times [2020-11-12 09:43:29,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:29,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64544957] [2020-11-12 09:43:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:29,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64544957] [2020-11-12 09:43:29,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838733406] [2020-11-12 09:43:29,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:29,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 09:43:29,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:29,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:29,876 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:29,897 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:29,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:29,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:29,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103765853] [2020-11-12 09:43:29,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:29,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:29,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:29,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:29,927 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:31,097 INFO L93 Difference]: Finished difference Result 1906 states and 2355 transitions. [2020-11-12 09:43:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:43:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:31,099 INFO L225 Difference]: With dead ends: 1906 [2020-11-12 09:43:31,099 INFO L226 Difference]: Without dead ends: 1664 [2020-11-12 09:43:31,099 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2020-11-12 09:43:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-11-12 09:43:31,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1228. [2020-11-12 09:43:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:31,113 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:31,114 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:31,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:31,115 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:31,115 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:31,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:31,330 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1433400596, now seen corresponding path program 100 times [2020-11-12 09:43:31,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:31,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558563219] [2020-11-12 09:43:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:31,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558563219] [2020-11-12 09:43:31,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646084342] [2020-11-12 09:43:31,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:31,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:43:31,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:31,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:43:31,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:31,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:32,002 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:32,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:32,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:32,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991328274] [2020-11-12 09:43:32,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:32,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:32,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:32,039 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:33,330 INFO L93 Difference]: Finished difference Result 1884 states and 2329 transitions. [2020-11-12 09:43:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:43:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:33,331 INFO L225 Difference]: With dead ends: 1884 [2020-11-12 09:43:33,331 INFO L226 Difference]: Without dead ends: 1642 [2020-11-12 09:43:33,332 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 09:43:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-11-12 09:43:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1228. [2020-11-12 09:43:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:33,343 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:33,343 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:33,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:33,344 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:33,344 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:33,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-11-12 09:43:33,545 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1053090860, now seen corresponding path program 101 times [2020-11-12 09:43:33,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:33,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214746150] [2020-11-12 09:43:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:34,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214746150] [2020-11-12 09:43:34,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725077011] [2020-11-12 09:43:34,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:34,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 09:43:34,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:34,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:34,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:34,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:34,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:34,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:34,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:34,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133486854] [2020-11-12 09:43:34,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:34,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:34,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:34,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:34,241 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:35,753 INFO L93 Difference]: Finished difference Result 1862 states and 2303 transitions. [2020-11-12 09:43:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:43:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:35,754 INFO L225 Difference]: With dead ends: 1862 [2020-11-12 09:43:35,754 INFO L226 Difference]: Without dead ends: 1620 [2020-11-12 09:43:35,755 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 09:43:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-11-12 09:43:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1228. [2020-11-12 09:43:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:35,767 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:35,767 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:35,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:35,768 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:35,768 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:35,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-11-12 09:43:35,969 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash -893144428, now seen corresponding path program 102 times [2020-11-12 09:43:35,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:35,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556525038] [2020-11-12 09:43:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:36,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556525038] [2020-11-12 09:43:36,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336128247] [2020-11-12 09:43:36,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:36,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 09:43:36,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:36,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:36,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:36,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:36,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:36,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:36,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029187509] [2020-11-12 09:43:36,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:36,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:36,653 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:38,213 INFO L93 Difference]: Finished difference Result 1840 states and 2277 transitions. [2020-11-12 09:43:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:43:38,213 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:38,215 INFO L225 Difference]: With dead ends: 1840 [2020-11-12 09:43:38,215 INFO L226 Difference]: Without dead ends: 1598 [2020-11-12 09:43:38,216 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=831, Invalid=2709, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 09:43:38,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-11-12 09:43:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1228. [2020-11-12 09:43:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:38,227 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:38,227 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:38,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:38,228 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:38,228 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:38,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:38,429 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1961510572, now seen corresponding path program 103 times [2020-11-12 09:43:38,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:38,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549642667] [2020-11-12 09:43:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:38,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549642667] [2020-11-12 09:43:38,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599127047] [2020-11-12 09:43:38,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:38,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:38,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:39,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:39,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:39,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:39,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:39,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114331246] [2020-11-12 09:43:39,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:39,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:39,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:39,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:39,066 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:40,784 INFO L93 Difference]: Finished difference Result 1818 states and 2251 transitions. [2020-11-12 09:43:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:43:40,785 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:40,786 INFO L225 Difference]: With dead ends: 1818 [2020-11-12 09:43:40,786 INFO L226 Difference]: Without dead ends: 1576 [2020-11-12 09:43:40,787 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:43:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-11-12 09:43:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1228. [2020-11-12 09:43:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:40,798 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:40,798 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:40,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:40,799 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:40,799 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:41,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:41,000 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1170395116, now seen corresponding path program 104 times [2020-11-12 09:43:41,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:41,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071073701] [2020-11-12 09:43:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:41,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071073701] [2020-11-12 09:43:41,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884651195] [2020-11-12 09:43:41,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:41,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:43:41,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:41,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:41,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:41,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:41,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:41,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:41,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:41,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164018681] [2020-11-12 09:43:41,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:41,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:41,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:41,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:41,620 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:43,424 INFO L93 Difference]: Finished difference Result 1796 states and 2225 transitions. [2020-11-12 09:43:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:43:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:43,426 INFO L225 Difference]: With dead ends: 1796 [2020-11-12 09:43:43,426 INFO L226 Difference]: Without dead ends: 1554 [2020-11-12 09:43:43,426 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:43:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-11-12 09:43:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1228. [2020-11-12 09:43:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:43,438 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:43,438 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:43,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:43,439 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:43,439 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:43,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-11-12 09:43:43,640 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1866864340, now seen corresponding path program 105 times [2020-11-12 09:43:43,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:43,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129421994] [2020-11-12 09:43:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:44,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129421994] [2020-11-12 09:43:44,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651113097] [2020-11-12 09:43:44,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:44,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 09:43:44,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:44,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:44,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:44,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:44,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:44,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:44,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:44,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141884023] [2020-11-12 09:43:44,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:44,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:44,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:44,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:44,266 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:46,222 INFO L93 Difference]: Finished difference Result 1774 states and 2199 transitions. [2020-11-12 09:43:46,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:43:46,222 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:46,224 INFO L225 Difference]: With dead ends: 1774 [2020-11-12 09:43:46,224 INFO L226 Difference]: Without dead ends: 1532 [2020-11-12 09:43:46,224 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:43:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-11-12 09:43:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1228. [2020-11-12 09:43:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1164 states have (on average 1.3788659793814433) internal successors, (1605), 1227 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1605 transitions. [2020-11-12 09:43:46,235 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1605 transitions. Word has length 126 [2020-11-12 09:43:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:46,235 INFO L481 AbstractCegarLoop]: Abstraction has 1228 states and 1605 transitions. [2020-11-12 09:43:46,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1605 transitions. [2020-11-12 09:43:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:46,236 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:46,236 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:46,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:46,436 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1492635028, now seen corresponding path program 106 times [2020-11-12 09:43:46,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:46,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451370740] [2020-11-12 09:43:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:46,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451370740] [2020-11-12 09:43:46,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219932763] [2020-11-12 09:43:46,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:46,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:43:46,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:46,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:43:46,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:46,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:47,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 4 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:47,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:47,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-11-12 09:43:47,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142044454] [2020-11-12 09:43:47,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-12 09:43:47,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-12 09:43:47,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-11-12 09:43:47,028 INFO L87 Difference]: Start difference. First operand 1228 states and 1605 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:49,083 INFO L93 Difference]: Finished difference Result 1769 states and 2195 transitions. [2020-11-12 09:43:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:43:49,084 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:49,085 INFO L225 Difference]: With dead ends: 1769 [2020-11-12 09:43:49,085 INFO L226 Difference]: Without dead ends: 1555 [2020-11-12 09:43:49,085 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 09:43:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-11-12 09:43:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1232. [2020-11-12 09:43:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1168 states have (on average 1.3784246575342465) internal successors, (1610), 1231 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1610 transitions. [2020-11-12 09:43:49,096 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1610 transitions. Word has length 126 [2020-11-12 09:43:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:49,096 INFO L481 AbstractCegarLoop]: Abstraction has 1232 states and 1610 transitions. [2020-11-12 09:43:49,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1610 transitions. [2020-11-12 09:43:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-12 09:43:49,097 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:49,097 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:49,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-11-12 09:43:49,298 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash -351196566, now seen corresponding path program 107 times [2020-11-12 09:43:49,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:49,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113449013] [2020-11-12 09:43:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:49,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113449013] [2020-11-12 09:43:49,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427966355] [2020-11-12 09:43:49,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:49,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 09:43:49,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:49,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-12 09:43:49,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:49,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:49,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:49,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:49,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-11-12 09:43:49,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283943402] [2020-11-12 09:43:49,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 09:43:49,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:49,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 09:43:49,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-11-12 09:43:49,940 INFO L87 Difference]: Start difference. First operand 1232 states and 1610 transitions. Second operand has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:52,264 INFO L93 Difference]: Finished difference Result 2279 states and 2737 transitions. [2020-11-12 09:43:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-12 09:43:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-11-12 09:43:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:52,265 INFO L225 Difference]: With dead ends: 2279 [2020-11-12 09:43:52,265 INFO L226 Difference]: Without dead ends: 1545 [2020-11-12 09:43:52,266 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1449, Invalid=3953, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 09:43:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-11-12 09:43:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1120. [2020-11-12 09:43:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1056 states have (on average 1.3835227272727273) internal successors, (1461), 1119 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1461 transitions. [2020-11-12 09:43:52,277 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1461 transitions. Word has length 126 [2020-11-12 09:43:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:52,277 INFO L481 AbstractCegarLoop]: Abstraction has 1120 states and 1461 transitions. [2020-11-12 09:43:52,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1461 transitions. [2020-11-12 09:43:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:43:52,278 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:52,278 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:52,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-11-12 09:43:52,478 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1009794007, now seen corresponding path program 108 times [2020-11-12 09:43:52,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:52,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781016754] [2020-11-12 09:43:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:53,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781016754] [2020-11-12 09:43:53,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478634877] [2020-11-12 09:43:53,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:53,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 09:43:53,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:53,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:53,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:53,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:53,289 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:53,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:53,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:43:53,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970778029] [2020-11-12 09:43:53,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:43:53,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:43:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:43:53,329 INFO L87 Difference]: Start difference. First operand 1120 states and 1461 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:54,449 INFO L93 Difference]: Finished difference Result 1842 states and 2265 transitions. [2020-11-12 09:43:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:43:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:43:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:54,451 INFO L225 Difference]: With dead ends: 1842 [2020-11-12 09:43:54,451 INFO L226 Difference]: Without dead ends: 1600 [2020-11-12 09:43:54,452 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=780, Invalid=2300, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 09:43:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2020-11-12 09:43:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1134. [2020-11-12 09:43:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1070 states have (on average 1.3822429906542055) internal successors, (1479), 1133 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1479 transitions. [2020-11-12 09:43:54,462 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1479 transitions. Word has length 131 [2020-11-12 09:43:54,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:54,462 INFO L481 AbstractCegarLoop]: Abstraction has 1134 states and 1479 transitions. [2020-11-12 09:43:54,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1479 transitions. [2020-11-12 09:43:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:43:54,463 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:54,463 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:54,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-11-12 09:43:54,664 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:54,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:54,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2092692759, now seen corresponding path program 109 times [2020-11-12 09:43:54,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:54,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190067291] [2020-11-12 09:43:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:55,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190067291] [2020-11-12 09:43:55,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510487089] [2020-11-12 09:43:55,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:55,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:55,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:55,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:55,446 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:55,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:55,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:43:55,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146061269] [2020-11-12 09:43:55,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:43:55,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:55,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:43:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:43:55,481 INFO L87 Difference]: Start difference. First operand 1134 states and 1479 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:56,780 INFO L93 Difference]: Finished difference Result 1843 states and 2267 transitions. [2020-11-12 09:43:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:43:56,780 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:43:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:56,782 INFO L225 Difference]: With dead ends: 1843 [2020-11-12 09:43:56,782 INFO L226 Difference]: Without dead ends: 1601 [2020-11-12 09:43:56,782 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=799, Invalid=2507, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 09:43:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2020-11-12 09:43:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1148. [2020-11-12 09:43:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1084 states have (on average 1.3809963099630995) internal successors, (1497), 1147 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1497 transitions. [2020-11-12 09:43:56,793 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1497 transitions. Word has length 131 [2020-11-12 09:43:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:56,793 INFO L481 AbstractCegarLoop]: Abstraction has 1148 states and 1497 transitions. [2020-11-12 09:43:56,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1497 transitions. [2020-11-12 09:43:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:43:56,794 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:56,794 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:56,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:56,994 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1956789847, now seen corresponding path program 110 times [2020-11-12 09:43:56,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:56,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266129519] [2020-11-12 09:43:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:57,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266129519] [2020-11-12 09:43:57,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592793123] [2020-11-12 09:43:57,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:57,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:43:57,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:57,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:43:57,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:43:57,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:43:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:57,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:43:57,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:43:57,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847414426] [2020-11-12 09:43:57,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:43:57,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:57,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:43:57,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:43:57,782 INFO L87 Difference]: Start difference. First operand 1148 states and 1497 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:59,145 INFO L93 Difference]: Finished difference Result 1844 states and 2269 transitions. [2020-11-12 09:43:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:43:59,146 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:43:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:59,147 INFO L225 Difference]: With dead ends: 1844 [2020-11-12 09:43:59,147 INFO L226 Difference]: Without dead ends: 1602 [2020-11-12 09:43:59,148 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=834, Invalid=2706, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 09:43:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2020-11-12 09:43:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1162. [2020-11-12 09:43:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1098 states have (on average 1.3797814207650274) internal successors, (1515), 1161 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1515 transitions. [2020-11-12 09:43:59,159 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1515 transitions. Word has length 131 [2020-11-12 09:43:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:59,160 INFO L481 AbstractCegarLoop]: Abstraction has 1162 states and 1515 transitions. [2020-11-12 09:43:59,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1515 transitions. [2020-11-12 09:43:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:43:59,161 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:59,161 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:59,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-11-12 09:43:59,361 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:59,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:59,362 INFO L82 PathProgramCache]: Analyzing trace with hash -148314007, now seen corresponding path program 111 times [2020-11-12 09:43:59,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:59,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501946843] [2020-11-12 09:43:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:59,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501946843] [2020-11-12 09:43:59,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986196574] [2020-11-12 09:43:59,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:43:59,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 09:43:59,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:43:59,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:43:59,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:00,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:00,084 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:00,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:00,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:44:00,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173248526] [2020-11-12 09:44:00,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:00,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:00,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:00,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:00,117 INFO L87 Difference]: Start difference. First operand 1162 states and 1515 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:01,643 INFO L93 Difference]: Finished difference Result 1845 states and 2271 transitions. [2020-11-12 09:44:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:44:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:01,645 INFO L225 Difference]: With dead ends: 1845 [2020-11-12 09:44:01,645 INFO L226 Difference]: Without dead ends: 1603 [2020-11-12 09:44:01,645 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:44:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-11-12 09:44:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1176. [2020-11-12 09:44:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1112 states have (on average 1.3785971223021583) internal successors, (1533), 1175 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1533 transitions. [2020-11-12 09:44:01,657 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1533 transitions. Word has length 131 [2020-11-12 09:44:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:01,657 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1533 transitions. [2020-11-12 09:44:01,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1533 transitions. [2020-11-12 09:44:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:44:01,658 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:01,658 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:01,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:01,859 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:01,859 INFO L82 PathProgramCache]: Analyzing trace with hash 11632425, now seen corresponding path program 112 times [2020-11-12 09:44:01,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:01,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212318938] [2020-11-12 09:44:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:02,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212318938] [2020-11-12 09:44:02,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799532722] [2020-11-12 09:44:02,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:02,475 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:44:02,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:02,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:44:02,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:02,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:02,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:02,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:02,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:44:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610932467] [2020-11-12 09:44:02,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:02,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:02,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:02,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:02,591 INFO L87 Difference]: Start difference. First operand 1176 states and 1533 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:04,311 INFO L93 Difference]: Finished difference Result 1846 states and 2273 transitions. [2020-11-12 09:44:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:44:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:04,313 INFO L225 Difference]: With dead ends: 1846 [2020-11-12 09:44:04,313 INFO L226 Difference]: Without dead ends: 1604 [2020-11-12 09:44:04,313 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=952, Invalid=3080, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:44:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-11-12 09:44:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1190. [2020-11-12 09:44:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1126 states have (on average 1.3774422735346359) internal successors, (1551), 1189 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1551 transitions. [2020-11-12 09:44:04,324 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1551 transitions. Word has length 131 [2020-11-12 09:44:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:04,325 INFO L481 AbstractCegarLoop]: Abstraction has 1190 states and 1551 transitions. [2020-11-12 09:44:04,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1551 transitions. [2020-11-12 09:44:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:44:04,325 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:04,325 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:04,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:04,526 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:04,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:04,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1056733719, now seen corresponding path program 113 times [2020-11-12 09:44:04,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:04,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614034019] [2020-11-12 09:44:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:05,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614034019] [2020-11-12 09:44:05,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817107116] [2020-11-12 09:44:05,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:05,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-12 09:44:05,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:05,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:44:05,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:05,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:05,227 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:05,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:05,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:44:05,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296511156] [2020-11-12 09:44:05,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:05,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:05,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:05,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:05,247 INFO L87 Difference]: Start difference. First operand 1190 states and 1551 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:07,025 INFO L93 Difference]: Finished difference Result 1847 states and 2275 transitions. [2020-11-12 09:44:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:44:07,025 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:07,027 INFO L225 Difference]: With dead ends: 1847 [2020-11-12 09:44:07,027 INFO L226 Difference]: Without dead ends: 1605 [2020-11-12 09:44:07,028 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1035, Invalid=3255, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:44:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2020-11-12 09:44:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1204. [2020-11-12 09:44:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1140 states have (on average 1.3763157894736842) internal successors, (1569), 1203 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1569 transitions. [2020-11-12 09:44:07,038 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1569 transitions. Word has length 131 [2020-11-12 09:44:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:07,039 INFO L481 AbstractCegarLoop]: Abstraction has 1204 states and 1569 transitions. [2020-11-12 09:44:07,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1569 transitions. [2020-11-12 09:44:07,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:44:07,039 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:07,040 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:07,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:07,240 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:07,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash -265618263, now seen corresponding path program 114 times [2020-11-12 09:44:07,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:07,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851345790] [2020-11-12 09:44:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:07,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851345790] [2020-11-12 09:44:07,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371000361] [2020-11-12 09:44:07,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:07,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-12 09:44:07,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:07,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:44:07,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:07,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:07,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:07,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:07,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:44:07,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279788381] [2020-11-12 09:44:07,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:07,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:07,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:07,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:07,959 INFO L87 Difference]: Start difference. First operand 1204 states and 1569 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:09,909 INFO L93 Difference]: Finished difference Result 1848 states and 2277 transitions. [2020-11-12 09:44:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:44:09,909 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:09,911 INFO L225 Difference]: With dead ends: 1848 [2020-11-12 09:44:09,911 INFO L226 Difference]: Without dead ends: 1606 [2020-11-12 09:44:09,912 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1134, Invalid=3422, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 09:44:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-11-12 09:44:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1218. [2020-11-12 09:44:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1154 states have (on average 1.375216637781629) internal successors, (1587), 1217 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1587 transitions. [2020-11-12 09:44:09,923 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1587 transitions. Word has length 131 [2020-11-12 09:44:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:09,923 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1587 transitions. [2020-11-12 09:44:09,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1587 transitions. [2020-11-12 09:44:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:44:09,924 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:09,924 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:10,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:10,125 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:10,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1523326103, now seen corresponding path program 115 times [2020-11-12 09:44:10,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:10,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663188316] [2020-11-12 09:44:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:10,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663188316] [2020-11-12 09:44:10,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092597159] [2020-11-12 09:44:10,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:10,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:44:10,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:10,746 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:10,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:10,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:10,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:44:10,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231634830] [2020-11-12 09:44:10,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:10,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:10,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:10,835 INFO L87 Difference]: Start difference. First operand 1218 states and 1587 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:12,878 INFO L93 Difference]: Finished difference Result 1849 states and 2279 transitions. [2020-11-12 09:44:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:44:12,878 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:12,880 INFO L225 Difference]: With dead ends: 1849 [2020-11-12 09:44:12,880 INFO L226 Difference]: Without dead ends: 1607 [2020-11-12 09:44:12,880 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1249, Invalid=3581, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 09:44:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-11-12 09:44:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1232. [2020-11-12 09:44:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1168 states have (on average 1.3741438356164384) internal successors, (1605), 1231 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1605 transitions. [2020-11-12 09:44:12,891 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1605 transitions. Word has length 131 [2020-11-12 09:44:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:12,891 INFO L481 AbstractCegarLoop]: Abstraction has 1232 states and 1605 transitions. [2020-11-12 09:44:12,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1605 transitions. [2020-11-12 09:44:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:44:12,892 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:12,892 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:13,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-11-12 09:44:13,093 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1897555415, now seen corresponding path program 116 times [2020-11-12 09:44:13,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:13,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462243580] [2020-11-12 09:44:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:13,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462243580] [2020-11-12 09:44:13,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330709104] [2020-11-12 09:44:13,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:13,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:44:13,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:13,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:44:13,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:13,701 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:13,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 4 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:13,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:13,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-12 09:44:13,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682927769] [2020-11-12 09:44:13,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:13,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:13,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:13,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:13,775 INFO L87 Difference]: Start difference. First operand 1232 states and 1605 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:16,007 INFO L93 Difference]: Finished difference Result 2237 states and 2699 transitions. [2020-11-12 09:44:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:44:16,007 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:16,009 INFO L225 Difference]: With dead ends: 2237 [2020-11-12 09:44:16,009 INFO L226 Difference]: Without dead ends: 1686 [2020-11-12 09:44:16,009 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1403, Invalid=3999, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 09:44:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-11-12 09:44:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1246. [2020-11-12 09:44:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1182 states have (on average 1.377326565143824) internal successors, (1628), 1245 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1628 transitions. [2020-11-12 09:44:16,020 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1628 transitions. Word has length 131 [2020-11-12 09:44:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:16,021 INFO L481 AbstractCegarLoop]: Abstraction has 1246 states and 1628 transitions. [2020-11-12 09:44:16,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1628 transitions. [2020-11-12 09:44:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-12 09:44:16,021 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:16,022 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:16,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-11-12 09:44:16,223 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash 553580287, now seen corresponding path program 117 times [2020-11-12 09:44:16,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:16,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641148948] [2020-11-12 09:44:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:16,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641148948] [2020-11-12 09:44:16,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129550917] [2020-11-12 09:44:16,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:16,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-12 09:44:16,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:16,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-12 09:44:16,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:16,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:16,872 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:16,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:16,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-11-12 09:44:16,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23190237] [2020-11-12 09:44:16,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-12 09:44:16,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-12 09:44:16,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-11-12 09:44:16,889 INFO L87 Difference]: Start difference. First operand 1246 states and 1628 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:19,051 INFO L93 Difference]: Finished difference Result 2158 states and 2670 transitions. [2020-11-12 09:44:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-12 09:44:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-11-12 09:44:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:19,053 INFO L225 Difference]: With dead ends: 2158 [2020-11-12 09:44:19,053 INFO L226 Difference]: Without dead ends: 1622 [2020-11-12 09:44:19,053 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1502, Invalid=3754, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 09:44:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2020-11-12 09:44:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1256. [2020-11-12 09:44:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1192 states have (on average 1.3766778523489933) internal successors, (1641), 1255 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1641 transitions. [2020-11-12 09:44:19,065 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1641 transitions. Word has length 131 [2020-11-12 09:44:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:19,065 INFO L481 AbstractCegarLoop]: Abstraction has 1256 states and 1641 transitions. [2020-11-12 09:44:19,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1641 transitions. [2020-11-12 09:44:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:19,066 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:19,066 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:19,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-11-12 09:44:19,267 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:19,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1913512577, now seen corresponding path program 118 times [2020-11-12 09:44:19,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:19,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745262814] [2020-11-12 09:44:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:19,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745262814] [2020-11-12 09:44:19,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428656631] [2020-11-12 09:44:19,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:19,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:44:19,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:19,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:44:19,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:20,064 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:20,074 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:20,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:20,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:44:20,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750621814] [2020-11-12 09:44:20,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:44:20,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:20,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:44:20,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:44:20,105 INFO L87 Difference]: Start difference. First operand 1256 states and 1641 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:21,288 INFO L93 Difference]: Finished difference Result 2109 states and 2594 transitions. [2020-11-12 09:44:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-12 09:44:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:21,291 INFO L225 Difference]: With dead ends: 2109 [2020-11-12 09:44:21,291 INFO L226 Difference]: Without dead ends: 1867 [2020-11-12 09:44:21,291 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=879, Invalid=2313, Unknown=0, NotChecked=0, Total=3192 [2020-11-12 09:44:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2020-11-12 09:44:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1266. [2020-11-12 09:44:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1202 states have (on average 1.375207986688852) internal successors, (1653), 1265 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1653 transitions. [2020-11-12 09:44:21,304 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1653 transitions. Word has length 136 [2020-11-12 09:44:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:21,304 INFO L481 AbstractCegarLoop]: Abstraction has 1266 states and 1653 transitions. [2020-11-12 09:44:21,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1653 transitions. [2020-11-12 09:44:21,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:21,305 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:21,305 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:21,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-11-12 09:44:21,506 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:21,507 INFO L82 PathProgramCache]: Analyzing trace with hash 947525055, now seen corresponding path program 119 times [2020-11-12 09:44:21,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:21,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078888459] [2020-11-12 09:44:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:22,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078888459] [2020-11-12 09:44:22,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749707560] [2020-11-12 09:44:22,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:22,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 09:44:22,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:22,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:22,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:22,323 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:22,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 1 proven. 489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:22,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:22,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:22,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325727157] [2020-11-12 09:44:22,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:22,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:22,384 INFO L87 Difference]: Start difference. First operand 1266 states and 1653 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:23,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:23,581 INFO L93 Difference]: Finished difference Result 2006 states and 2475 transitions. [2020-11-12 09:44:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-12 09:44:23,582 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:23,584 INFO L225 Difference]: With dead ends: 2006 [2020-11-12 09:44:23,584 INFO L226 Difference]: Without dead ends: 1764 [2020-11-12 09:44:23,584 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=801, Invalid=2279, Unknown=0, NotChecked=0, Total=3080 [2020-11-12 09:44:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2020-11-12 09:44:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1273. [2020-11-12 09:44:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:23,597 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:23,597 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:23,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:23,598 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:23,599 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:23,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:23,801 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1800727679, now seen corresponding path program 120 times [2020-11-12 09:44:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:23,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516111629] [2020-11-12 09:44:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:24,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516111629] [2020-11-12 09:44:24,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642782841] [2020-11-12 09:44:24,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:24,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:44:24,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:24,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:24,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:24,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:24,620 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:24,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:24,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:24,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907245230] [2020-11-12 09:44:24,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:24,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:24,647 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:25,972 INFO L93 Difference]: Finished difference Result 1993 states and 2459 transitions. [2020-11-12 09:44:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:44:25,972 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:25,974 INFO L225 Difference]: With dead ends: 1993 [2020-11-12 09:44:25,974 INFO L226 Difference]: Without dead ends: 1751 [2020-11-12 09:44:25,975 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=812, Invalid=2494, Unknown=0, NotChecked=0, Total=3306 [2020-11-12 09:44:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-11-12 09:44:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1273. [2020-11-12 09:44:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:25,989 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:25,989 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:25,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:25,990 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:25,990 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:26,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-11-12 09:44:26,192 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:26,193 INFO L82 PathProgramCache]: Analyzing trace with hash 717828927, now seen corresponding path program 121 times [2020-11-12 09:44:26,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:26,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560815619] [2020-11-12 09:44:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:26,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560815619] [2020-11-12 09:44:26,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829265339] [2020-11-12 09:44:26,813 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:26,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:26,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:26,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:26,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:27,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:27,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:27,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987789544] [2020-11-12 09:44:27,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:27,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:27,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:27,006 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:28,506 INFO L93 Difference]: Finished difference Result 1971 states and 2433 transitions. [2020-11-12 09:44:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:44:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:28,508 INFO L225 Difference]: With dead ends: 1971 [2020-11-12 09:44:28,508 INFO L226 Difference]: Without dead ends: 1729 [2020-11-12 09:44:28,509 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 09:44:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-11-12 09:44:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1273. [2020-11-12 09:44:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:28,521 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:28,522 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:28,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:28,523 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:28,523 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:28,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-11-12 09:44:28,724 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash 853731839, now seen corresponding path program 122 times [2020-11-12 09:44:28,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:28,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284963987] [2020-11-12 09:44:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:29,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284963987] [2020-11-12 09:44:29,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045992992] [2020-11-12 09:44:29,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:29,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:44:29,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:29,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:29,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:29,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:29,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:29,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:29,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590111030] [2020-11-12 09:44:29,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:29,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:29,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:29,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:29,507 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:31,096 INFO L93 Difference]: Finished difference Result 1949 states and 2407 transitions. [2020-11-12 09:44:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:44:31,096 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:31,098 INFO L225 Difference]: With dead ends: 1949 [2020-11-12 09:44:31,098 INFO L226 Difference]: Without dead ends: 1707 [2020-11-12 09:44:31,098 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=882, Invalid=2900, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:44:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-11-12 09:44:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1273. [2020-11-12 09:44:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:31,111 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:31,111 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:31,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:31,112 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:31,112 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:31,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-11-12 09:44:31,314 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:31,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:31,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1632759617, now seen corresponding path program 123 times [2020-11-12 09:44:31,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:31,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588523063] [2020-11-12 09:44:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:31,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588523063] [2020-11-12 09:44:31,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640842728] [2020-11-12 09:44:31,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:32,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 09:44:32,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:32,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:32,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:32,047 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:32,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:32,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:32,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:32,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601646381] [2020-11-12 09:44:32,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:32,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:32,093 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:33,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:33,845 INFO L93 Difference]: Finished difference Result 1927 states and 2381 transitions. [2020-11-12 09:44:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:44:33,845 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:33,847 INFO L225 Difference]: With dead ends: 1927 [2020-11-12 09:44:33,847 INFO L226 Difference]: Without dead ends: 1685 [2020-11-12 09:44:33,847 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=941, Invalid=3091, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:44:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-11-12 09:44:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1273. [2020-11-12 09:44:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:33,859 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:33,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:33,859 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:33,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:33,860 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:33,860 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:34,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:34,062 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:34,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1472813185, now seen corresponding path program 124 times [2020-11-12 09:44:34,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:34,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792078272] [2020-11-12 09:44:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:34,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792078272] [2020-11-12 09:44:34,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992469074] [2020-11-12 09:44:34,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:34,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:44:34,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:34,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:44:34,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:34,762 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:34,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:34,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:34,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:34,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815673951] [2020-11-12 09:44:34,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:34,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:34,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:34,807 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:36,722 INFO L93 Difference]: Finished difference Result 1905 states and 2355 transitions. [2020-11-12 09:44:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:44:36,722 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:36,724 INFO L225 Difference]: With dead ends: 1905 [2020-11-12 09:44:36,724 INFO L226 Difference]: Without dead ends: 1663 [2020-11-12 09:44:36,724 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1016, Invalid=3274, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:44:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2020-11-12 09:44:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1273. [2020-11-12 09:44:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:36,736 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:36,737 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:36,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:36,738 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:36,738 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:36,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:36,938 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1753787967, now seen corresponding path program 125 times [2020-11-12 09:44:36,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:36,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628038212] [2020-11-12 09:44:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:37,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628038212] [2020-11-12 09:44:37,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40021479] [2020-11-12 09:44:37,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:37,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 09:44:37,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:37,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:37,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:37,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:37,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:37,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:37,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:37,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465338240] [2020-11-12 09:44:37,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:37,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:37,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:37,704 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:39,718 INFO L93 Difference]: Finished difference Result 1883 states and 2329 transitions. [2020-11-12 09:44:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:44:39,719 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:39,720 INFO L225 Difference]: With dead ends: 1883 [2020-11-12 09:44:39,720 INFO L226 Difference]: Without dead ends: 1641 [2020-11-12 09:44:39,720 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1107, Invalid=3449, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 09:44:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2020-11-12 09:44:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1273. [2020-11-12 09:44:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:39,731 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:39,731 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:39,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:39,732 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:39,732 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:39,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:39,933 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1750063873, now seen corresponding path program 126 times [2020-11-12 09:44:39,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:39,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410491782] [2020-11-12 09:44:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:40,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410491782] [2020-11-12 09:44:40,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048482844] [2020-11-12 09:44:40,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:40,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-11-12 09:44:40,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:40,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:40,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:40,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:40,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:40,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:40,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:40,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129972056] [2020-11-12 09:44:40,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:40,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:40,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:40,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:40,663 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:42,824 INFO L93 Difference]: Finished difference Result 1861 states and 2303 transitions. [2020-11-12 09:44:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:44:42,825 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:42,827 INFO L225 Difference]: With dead ends: 1861 [2020-11-12 09:44:42,827 INFO L226 Difference]: Without dead ends: 1619 [2020-11-12 09:44:42,827 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 09:44:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-11-12 09:44:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1273. [2020-11-12 09:44:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:42,839 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:42,839 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:42,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:42,840 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:42,840 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:43,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-11-12 09:44:43,041 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:43,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1287195583, now seen corresponding path program 127 times [2020-11-12 09:44:43,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:43,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600168981] [2020-11-12 09:44:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:43,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600168981] [2020-11-12 09:44:43,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193035623] [2020-11-12 09:44:43,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:43,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:43,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:43,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:43,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:43,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:43,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:43,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805054048] [2020-11-12 09:44:43,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:43,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:43,739 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:46,079 INFO L93 Difference]: Finished difference Result 1839 states and 2277 transitions. [2020-11-12 09:44:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:44:46,079 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:46,081 INFO L225 Difference]: With dead ends: 1839 [2020-11-12 09:44:46,081 INFO L226 Difference]: Without dead ends: 1597 [2020-11-12 09:44:46,081 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1337, Invalid=3775, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 09:44:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-11-12 09:44:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1273. [2020-11-12 09:44:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1209 states have (on average 1.3738626964433416) internal successors, (1661), 1272 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1661 transitions. [2020-11-12 09:44:46,092 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1661 transitions. Word has length 136 [2020-11-12 09:44:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:46,093 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states and 1661 transitions. [2020-11-12 09:44:46,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1661 transitions. [2020-11-12 09:44:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:46,094 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:46,094 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:46,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:46,294 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:46,295 INFO L82 PathProgramCache]: Analyzing trace with hash 912966271, now seen corresponding path program 128 times [2020-11-12 09:44:46,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:46,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42764883] [2020-11-12 09:44:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:46,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42764883] [2020-11-12 09:44:46,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819106366] [2020-11-12 09:44:46,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:46,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:44:46,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:46,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:46,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:46,963 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:46,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:47,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:47,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-11-12 09:44:47,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210152697] [2020-11-12 09:44:47,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-12 09:44:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-12 09:44:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-11-12 09:44:47,010 INFO L87 Difference]: Start difference. First operand 1273 states and 1661 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:49,524 INFO L93 Difference]: Finished difference Result 2218 states and 2681 transitions. [2020-11-12 09:44:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:44:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:49,526 INFO L225 Difference]: With dead ends: 2218 [2020-11-12 09:44:49,526 INFO L226 Difference]: Without dead ends: 1667 [2020-11-12 09:44:49,526 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1497, Invalid=4203, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 09:44:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-11-12 09:44:49,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1277. [2020-11-12 09:44:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1213 states have (on average 1.373454245671888) internal successors, (1666), 1276 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1666 transitions. [2020-11-12 09:44:49,538 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1666 transitions. Word has length 136 [2020-11-12 09:44:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:49,539 INFO L481 AbstractCegarLoop]: Abstraction has 1277 states and 1666 transitions. [2020-11-12 09:44:49,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1666 transitions. [2020-11-12 09:44:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-12 09:44:49,539 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:49,540 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:49,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-11-12 09:44:49,740 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -930865323, now seen corresponding path program 129 times [2020-11-12 09:44:49,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:49,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706548967] [2020-11-12 09:44:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:50,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706548967] [2020-11-12 09:44:50,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228290379] [2020-11-12 09:44:50,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:50,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 09:44:50,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:50,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-12 09:44:50,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:50,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:50,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:50,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:50,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-11-12 09:44:50,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516172331] [2020-11-12 09:44:50,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 09:44:50,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:50,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 09:44:50,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-11-12 09:44:50,499 INFO L87 Difference]: Start difference. First operand 1277 states and 1666 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:53,160 INFO L93 Difference]: Finished difference Result 2393 states and 2881 transitions. [2020-11-12 09:44:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-12 09:44:53,160 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-11-12 09:44:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:53,162 INFO L225 Difference]: With dead ends: 2393 [2020-11-12 09:44:53,162 INFO L226 Difference]: Without dead ends: 1659 [2020-11-12 09:44:53,163 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1708, Invalid=4612, Unknown=0, NotChecked=0, Total=6320 [2020-11-12 09:44:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-11-12 09:44:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1287. [2020-11-12 09:44:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:44:53,174 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 136 [2020-11-12 09:44:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:53,174 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:44:53,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:44:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:44:53,175 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:53,175 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:53,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-11-12 09:44:53,376 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:53,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1850414060, now seen corresponding path program 130 times [2020-11-12 09:44:53,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:53,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193900475] [2020-11-12 09:44:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:54,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193900475] [2020-11-12 09:44:54,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737749367] [2020-11-12 09:44:54,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:54,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:44:54,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:54,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:44:54,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:54,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:54,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:54,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:54,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:44:54,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431201934] [2020-11-12 09:44:54,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:44:54,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:44:54,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:44:54,333 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:55,647 INFO L93 Difference]: Finished difference Result 2037 states and 2513 transitions. [2020-11-12 09:44:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:44:55,647 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:44:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:55,648 INFO L225 Difference]: With dead ends: 2037 [2020-11-12 09:44:55,649 INFO L226 Difference]: Without dead ends: 1795 [2020-11-12 09:44:55,649 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2020-11-12 09:44:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-11-12 09:44:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1287. [2020-11-12 09:44:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:44:55,661 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:44:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:55,661 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:44:55,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:44:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:44:55,662 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:55,662 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:55,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-11-12 09:44:55,863 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash -997211436, now seen corresponding path program 131 times [2020-11-12 09:44:55,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:55,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248273287] [2020-11-12 09:44:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:56,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248273287] [2020-11-12 09:44:56,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111677698] [2020-11-12 09:44:56,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:56,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 09:44:56,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:44:56,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:56,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:56,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:56,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:56,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:44:56,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866588084] [2020-11-12 09:44:56,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:44:56,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:56,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:44:56,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:44:56,789 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:44:58,238 INFO L93 Difference]: Finished difference Result 2024 states and 2497 transitions. [2020-11-12 09:44:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:44:58,238 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:44:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:44:58,240 INFO L225 Difference]: With dead ends: 2024 [2020-11-12 09:44:58,240 INFO L226 Difference]: Without dead ends: 1782 [2020-11-12 09:44:58,240 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:44:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-11-12 09:44:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1287. [2020-11-12 09:44:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:44:58,252 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:44:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:44:58,252 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:44:58,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:44:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:44:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:44:58,253 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:44:58,253 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:44:58,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:58,454 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:44:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:44:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2080110188, now seen corresponding path program 132 times [2020-11-12 09:44:58,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:44:58,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362109993] [2020-11-12 09:44:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:44:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:44:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:59,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362109993] [2020-11-12 09:44:59,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921500186] [2020-11-12 09:44:59,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:44:59,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:44:59,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:44:59,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:44:59,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:44:59,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:44:59,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:44:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:44:59,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:44:59,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:44:59,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942077942] [2020-11-12 09:44:59,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:44:59,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:44:59,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:44:59,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:44:59,368 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:00,985 INFO L93 Difference]: Finished difference Result 2011 states and 2481 transitions. [2020-11-12 09:45:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:45:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:00,987 INFO L225 Difference]: With dead ends: 2011 [2020-11-12 09:45:00,987 INFO L226 Difference]: Without dead ends: 1769 [2020-11-12 09:45:00,988 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=955, Invalid=3077, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:45:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2020-11-12 09:45:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1287. [2020-11-12 09:45:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:00,999 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:00,999 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:00,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:01,000 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:01,000 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:01,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-11-12 09:45:01,201 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:01,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1944207276, now seen corresponding path program 133 times [2020-11-12 09:45:01,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:01,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926168935] [2020-11-12 09:45:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:01,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926168935] [2020-11-12 09:45:01,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521509687] [2020-11-12 09:45:01,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:01,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:01,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:01,995 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:02,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:02,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:02,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:02,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289202295] [2020-11-12 09:45:02,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:02,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:02,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:02,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:02,088 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:03,840 INFO L93 Difference]: Finished difference Result 1998 states and 2465 transitions. [2020-11-12 09:45:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:45:03,840 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:03,842 INFO L225 Difference]: With dead ends: 1998 [2020-11-12 09:45:03,842 INFO L226 Difference]: Without dead ends: 1756 [2020-11-12 09:45:03,842 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1004, Invalid=3286, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:45:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-11-12 09:45:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1287. [2020-11-12 09:45:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:03,854 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:03,854 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:03,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:03,855 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:03,855 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:04,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:04,056 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:04,057 INFO L82 PathProgramCache]: Analyzing trace with hash -135731436, now seen corresponding path program 134 times [2020-11-12 09:45:04,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:04,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864170735] [2020-11-12 09:45:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864170735] [2020-11-12 09:45:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241106185] [2020-11-12 09:45:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:04,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:45:04,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:04,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:04,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:04,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:04,907 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:04,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:04,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:04,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582679650] [2020-11-12 09:45:04,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:04,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:04,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:04,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:04,931 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:06,796 INFO L93 Difference]: Finished difference Result 1985 states and 2449 transitions. [2020-11-12 09:45:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:45:06,796 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:06,798 INFO L225 Difference]: With dead ends: 1985 [2020-11-12 09:45:06,798 INFO L226 Difference]: Without dead ends: 1743 [2020-11-12 09:45:06,798 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1069, Invalid=3487, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 09:45:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-11-12 09:45:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1287. [2020-11-12 09:45:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:06,810 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:06,810 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:06,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:06,811 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:06,811 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:07,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:07,013 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:07,013 INFO L82 PathProgramCache]: Analyzing trace with hash 24214996, now seen corresponding path program 135 times [2020-11-12 09:45:07,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:07,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393527119] [2020-11-12 09:45:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:07,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393527119] [2020-11-12 09:45:07,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263697245] [2020-11-12 09:45:07,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:07,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-12 09:45:07,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:07,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:07,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:07,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:07,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:07,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:07,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:07,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090467176] [2020-11-12 09:45:07,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:07,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:07,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:07,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:07,870 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:09,891 INFO L93 Difference]: Finished difference Result 1972 states and 2433 transitions. [2020-11-12 09:45:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:45:09,891 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:09,893 INFO L225 Difference]: With dead ends: 1972 [2020-11-12 09:45:09,893 INFO L226 Difference]: Without dead ends: 1730 [2020-11-12 09:45:09,893 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1150, Invalid=3680, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 09:45:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-11-12 09:45:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1287. [2020-11-12 09:45:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:09,905 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:09,905 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:09,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:09,906 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:09,906 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:10,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:10,108 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1044151148, now seen corresponding path program 136 times [2020-11-12 09:45:10,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:10,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569688357] [2020-11-12 09:45:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569688357] [2020-11-12 09:45:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230188725] [2020-11-12 09:45:10,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:10,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:45:10,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:10,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:45:10,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:10,854 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:10,918 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:10,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:10,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:10,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018000392] [2020-11-12 09:45:10,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:10,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:10,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:10,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:10,941 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:13,097 INFO L93 Difference]: Finished difference Result 1959 states and 2417 transitions. [2020-11-12 09:45:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:45:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:13,099 INFO L225 Difference]: With dead ends: 1959 [2020-11-12 09:45:13,099 INFO L226 Difference]: Without dead ends: 1717 [2020-11-12 09:45:13,100 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1247, Invalid=3865, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 09:45:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-11-12 09:45:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1287. [2020-11-12 09:45:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:13,111 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:13,112 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:13,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:13,112 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:13,113 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:13,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:13,313 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash -253035692, now seen corresponding path program 137 times [2020-11-12 09:45:13,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:13,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617273898] [2020-11-12 09:45:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617273898] [2020-11-12 09:45:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785265245] [2020-11-12 09:45:13,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:14,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-11-12 09:45:14,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:14,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:14,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:14,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:14,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:14,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:14,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:14,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786315642] [2020-11-12 09:45:14,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:14,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:14,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:14,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:14,152 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:16,459 INFO L93 Difference]: Finished difference Result 1946 states and 2401 transitions. [2020-11-12 09:45:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:45:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:16,461 INFO L225 Difference]: With dead ends: 1946 [2020-11-12 09:45:16,461 INFO L226 Difference]: Without dead ends: 1704 [2020-11-12 09:45:16,462 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1360, Invalid=4042, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 09:45:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-11-12 09:45:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1287. [2020-11-12 09:45:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:16,483 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:16,484 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:16,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:16,485 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:16,485 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:16,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:16,685 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:16,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1510743532, now seen corresponding path program 138 times [2020-11-12 09:45:16,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:16,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585217689] [2020-11-12 09:45:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:17,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585217689] [2020-11-12 09:45:17,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564624486] [2020-11-12 09:45:17,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:17,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:45:17,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:17,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:17,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:17,433 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:17,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:17,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:17,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:17,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042672923] [2020-11-12 09:45:17,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:17,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:17,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:17,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:17,522 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:19,957 INFO L93 Difference]: Finished difference Result 1933 states and 2385 transitions. [2020-11-12 09:45:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:45:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:19,959 INFO L225 Difference]: With dead ends: 1933 [2020-11-12 09:45:19,959 INFO L226 Difference]: Without dead ends: 1691 [2020-11-12 09:45:19,959 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1489, Invalid=4211, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 09:45:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-11-12 09:45:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1287. [2020-11-12 09:45:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1223 states have (on average 1.3728536385936223) internal successors, (1679), 1286 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1679 transitions. [2020-11-12 09:45:19,976 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1679 transitions. Word has length 141 [2020-11-12 09:45:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:19,976 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1679 transitions. [2020-11-12 09:45:19,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1679 transitions. [2020-11-12 09:45:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:19,977 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:19,978 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:20,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-11-12 09:45:20,191 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:20,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1884972844, now seen corresponding path program 139 times [2020-11-12 09:45:20,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:20,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215107563] [2020-11-12 09:45:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:20,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215107563] [2020-11-12 09:45:20,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196777704] [2020-11-12 09:45:20,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:20,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:20,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:20,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:20,983 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 4 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:21,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:21,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-12 09:45:21,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307053862] [2020-11-12 09:45:21,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-12 09:45:21,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-12 09:45:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-11-12 09:45:21,002 INFO L87 Difference]: Start difference. First operand 1287 states and 1679 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:23,565 INFO L93 Difference]: Finished difference Result 1927 states and 2379 transitions. [2020-11-12 09:45:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:45:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:23,567 INFO L225 Difference]: With dead ends: 1927 [2020-11-12 09:45:23,567 INFO L226 Difference]: Without dead ends: 1713 [2020-11-12 09:45:23,567 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1634, Invalid=4372, Unknown=0, NotChecked=0, Total=6006 [2020-11-12 09:45:23,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2020-11-12 09:45:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1291. [2020-11-12 09:45:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1227 states have (on average 1.3724531377343114) internal successors, (1684), 1290 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1684 transitions. [2020-11-12 09:45:23,578 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1684 transitions. Word has length 141 [2020-11-12 09:45:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:23,578 INFO L481 AbstractCegarLoop]: Abstraction has 1291 states and 1684 transitions. [2020-11-12 09:45:23,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1684 transitions. [2020-11-12 09:45:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-12 09:45:23,579 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:23,579 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:23,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-11-12 09:45:23,780 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:23,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash 566162858, now seen corresponding path program 140 times [2020-11-12 09:45:23,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:23,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547750958] [2020-11-12 09:45:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:24,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547750958] [2020-11-12 09:45:24,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860893478] [2020-11-12 09:45:24,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:24,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:45:24,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:24,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-12 09:45:24,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:24,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:24,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:24,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:24,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-11-12 09:45:24,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177356956] [2020-11-12 09:45:24,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-12 09:45:24,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-12 09:45:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2020-11-12 09:45:24,556 INFO L87 Difference]: Start difference. First operand 1291 states and 1684 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:27,142 INFO L93 Difference]: Finished difference Result 2232 states and 2758 transitions. [2020-11-12 09:45:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-12 09:45:27,143 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-11-12 09:45:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:27,145 INFO L225 Difference]: With dead ends: 2232 [2020-11-12 09:45:27,145 INFO L226 Difference]: Without dead ends: 1696 [2020-11-12 09:45:27,146 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1768, Invalid=4394, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:45:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-11-12 09:45:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1301. [2020-11-12 09:45:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1237 states have (on average 1.3718674211802748) internal successors, (1697), 1300 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1697 transitions. [2020-11-12 09:45:27,158 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1697 transitions. Word has length 141 [2020-11-12 09:45:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:27,158 INFO L481 AbstractCegarLoop]: Abstraction has 1301 states and 1697 transitions. [2020-11-12 09:45:27,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1697 transitions. [2020-11-12 09:45:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:27,159 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:27,159 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:27,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-11-12 09:45:27,360 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash 542118378, now seen corresponding path program 141 times [2020-11-12 09:45:27,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:27,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847043652] [2020-11-12 09:45:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:28,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847043652] [2020-11-12 09:45:28,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924813169] [2020-11-12 09:45:28,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:28,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 09:45:28,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:28,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:45:28,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:28,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:28,392 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:28,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:28,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 33 [2020-11-12 09:45:28,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181408114] [2020-11-12 09:45:28,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:45:28,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:45:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:45:28,427 INFO L87 Difference]: Start difference. First operand 1301 states and 1697 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:29,879 INFO L93 Difference]: Finished difference Result 2168 states and 2666 transitions. [2020-11-12 09:45:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-12 09:45:29,880 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:29,882 INFO L225 Difference]: With dead ends: 2168 [2020-11-12 09:45:29,882 INFO L226 Difference]: Without dead ends: 1926 [2020-11-12 09:45:29,882 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1058, Invalid=2724, Unknown=0, NotChecked=0, Total=3782 [2020-11-12 09:45:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2020-11-12 09:45:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1311. [2020-11-12 09:45:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1247 states have (on average 1.3704891740176424) internal successors, (1709), 1310 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1709 transitions. [2020-11-12 09:45:29,894 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1709 transitions. Word has length 146 [2020-11-12 09:45:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:29,895 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1709 transitions. [2020-11-12 09:45:29,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1709 transitions. [2020-11-12 09:45:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:29,895 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:29,896 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:30,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-11-12 09:45:30,111 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:30,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1416542762, now seen corresponding path program 142 times [2020-11-12 09:45:30,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:30,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003319404] [2020-11-12 09:45:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:30,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003319404] [2020-11-12 09:45:30,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438449008] [2020-11-12 09:45:30,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:31,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:45:31,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:31,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:45:31,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:31,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:31,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 1 proven. 593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:31,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:31,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:31,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478746722] [2020-11-12 09:45:31,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:31,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:31,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:31,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:31,176 INFO L87 Difference]: Start difference. First operand 1311 states and 1709 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:32,591 INFO L93 Difference]: Finished difference Result 2093 states and 2579 transitions. [2020-11-12 09:45:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-12 09:45:32,592 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:32,593 INFO L225 Difference]: With dead ends: 2093 [2020-11-12 09:45:32,593 INFO L226 Difference]: Without dead ends: 1851 [2020-11-12 09:45:32,594 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=971, Invalid=2689, Unknown=0, NotChecked=0, Total=3660 [2020-11-12 09:45:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-11-12 09:45:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1318. [2020-11-12 09:45:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:32,606 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:32,606 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:32,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:32,607 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:32,607 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:32,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:32,808 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:32,809 INFO L82 PathProgramCache]: Analyzing trace with hash 398205162, now seen corresponding path program 143 times [2020-11-12 09:45:32,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:32,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123577847] [2020-11-12 09:45:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:33,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123577847] [2020-11-12 09:45:33,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152513509] [2020-11-12 09:45:33,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:33,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 09:45:33,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:33,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:33,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:33,738 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:33,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:33,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:33,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:33,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960907561] [2020-11-12 09:45:33,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:33,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:33,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:33,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:33,831 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:35,409 INFO L93 Difference]: Finished difference Result 2080 states and 2563 transitions. [2020-11-12 09:45:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:45:35,409 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:35,410 INFO L225 Difference]: With dead ends: 2080 [2020-11-12 09:45:35,410 INFO L226 Difference]: Without dead ends: 1838 [2020-11-12 09:45:35,411 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=979, Invalid=2927, Unknown=0, NotChecked=0, Total=3906 [2020-11-12 09:45:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-11-12 09:45:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1318. [2020-11-12 09:45:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:35,426 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:35,426 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:35,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:35,428 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:35,428 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:35,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2020-11-12 09:45:35,629 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:35,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1251407786, now seen corresponding path program 144 times [2020-11-12 09:45:35,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:35,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217054838] [2020-11-12 09:45:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:36,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217054838] [2020-11-12 09:45:36,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508589710] [2020-11-12 09:45:36,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:36,483 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:45:36,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:36,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:36,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:36,524 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:36,591 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:36,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:36,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:36,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564916977] [2020-11-12 09:45:36,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:36,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:36,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:36,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:36,620 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:38,347 INFO L93 Difference]: Finished difference Result 2058 states and 2537 transitions. [2020-11-12 09:45:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:45:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:38,349 INFO L225 Difference]: With dead ends: 2058 [2020-11-12 09:45:38,349 INFO L226 Difference]: Without dead ends: 1816 [2020-11-12 09:45:38,349 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1003, Invalid=3157, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 09:45:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-11-12 09:45:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1318. [2020-11-12 09:45:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:38,361 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:38,361 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:38,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:38,362 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:38,362 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:38,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:38,563 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash 168509034, now seen corresponding path program 145 times [2020-11-12 09:45:38,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:38,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202904008] [2020-11-12 09:45:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:39,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202904008] [2020-11-12 09:45:39,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791825709] [2020-11-12 09:45:39,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:39,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:39,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:39,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:39,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:39,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:39,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:39,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459284773] [2020-11-12 09:45:39,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:39,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:39,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:39,509 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:41,372 INFO L93 Difference]: Finished difference Result 2036 states and 2511 transitions. [2020-11-12 09:45:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:45:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:41,373 INFO L225 Difference]: With dead ends: 2036 [2020-11-12 09:45:41,374 INFO L226 Difference]: Without dead ends: 1794 [2020-11-12 09:45:41,374 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1043, Invalid=3379, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 09:45:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2020-11-12 09:45:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1318. [2020-11-12 09:45:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:41,387 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:41,387 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:41,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:41,388 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:41,388 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:41,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:41,589 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:41,590 INFO L82 PathProgramCache]: Analyzing trace with hash 304411946, now seen corresponding path program 146 times [2020-11-12 09:45:41,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:41,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209264773] [2020-11-12 09:45:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:42,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209264773] [2020-11-12 09:45:42,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910491395] [2020-11-12 09:45:42,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:42,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:45:42,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:42,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:42,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:42,508 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:42,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:42,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:42,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:42,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268167864] [2020-11-12 09:45:42,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:42,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:42,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:42,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:42,613 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:44,703 INFO L93 Difference]: Finished difference Result 2014 states and 2485 transitions. [2020-11-12 09:45:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:45:44,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:44,705 INFO L225 Difference]: With dead ends: 2014 [2020-11-12 09:45:44,705 INFO L226 Difference]: Without dead ends: 1772 [2020-11-12 09:45:44,705 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1099, Invalid=3593, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 09:45:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-11-12 09:45:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1318. [2020-11-12 09:45:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:44,717 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:44,717 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:44,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:44,718 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:44,718 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:44,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable153 [2020-11-12 09:45:44,919 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2112887786, now seen corresponding path program 147 times [2020-11-12 09:45:44,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:44,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168757716] [2020-11-12 09:45:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:45,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168757716] [2020-11-12 09:45:45,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633388628] [2020-11-12 09:45:45,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:45,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 09:45:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:45,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:45,767 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:45,834 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:45,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:45,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:45,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970252076] [2020-11-12 09:45:45,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:45,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:45,860 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:48,100 INFO L93 Difference]: Finished difference Result 1992 states and 2459 transitions. [2020-11-12 09:45:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:45:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:48,101 INFO L225 Difference]: With dead ends: 1992 [2020-11-12 09:45:48,101 INFO L226 Difference]: Without dead ends: 1750 [2020-11-12 09:45:48,102 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1171, Invalid=3799, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 09:45:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2020-11-12 09:45:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1318. [2020-11-12 09:45:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:48,113 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:48,113 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:48,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:48,114 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:48,115 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:48,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:48,315 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:48,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:48,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2022133078, now seen corresponding path program 148 times [2020-11-12 09:45:48,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:48,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757168414] [2020-11-12 09:45:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:48,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757168414] [2020-11-12 09:45:48,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005337025] [2020-11-12 09:45:48,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:49,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:45:49,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:49,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:45:49,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:49,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:49,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:49,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:49,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:49,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888013531] [2020-11-12 09:45:49,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:49,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:49,228 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:51,582 INFO L93 Difference]: Finished difference Result 1970 states and 2433 transitions. [2020-11-12 09:45:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:45:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:51,584 INFO L225 Difference]: With dead ends: 1970 [2020-11-12 09:45:51,584 INFO L226 Difference]: Without dead ends: 1728 [2020-11-12 09:45:51,584 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1259, Invalid=3997, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 09:45:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-11-12 09:45:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1318. [2020-11-12 09:45:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:51,596 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:51,596 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:51,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:51,597 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:51,597 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:51,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-11-12 09:45:51,798 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1204468074, now seen corresponding path program 149 times [2020-11-12 09:45:51,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:51,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513422340] [2020-11-12 09:45:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:52,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513422340] [2020-11-12 09:45:52,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705797565] [2020-11-12 09:45:52,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:52,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 09:45:52,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:52,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:52,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:52,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:52,664 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:52,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:52,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:52,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801046729] [2020-11-12 09:45:52,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:52,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:52,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:52,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:52,687 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:55,161 INFO L93 Difference]: Finished difference Result 1948 states and 2407 transitions. [2020-11-12 09:45:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:45:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:55,163 INFO L225 Difference]: With dead ends: 1948 [2020-11-12 09:45:55,163 INFO L226 Difference]: Without dead ends: 1706 [2020-11-12 09:45:55,163 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1363, Invalid=4187, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 09:45:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-11-12 09:45:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1318. [2020-11-12 09:45:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:55,175 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:55,175 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:55,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:55,176 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:55,176 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:55,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-11-12 09:45:55,390 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:55,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1995583530, now seen corresponding path program 150 times [2020-11-12 09:45:55,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:55,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568198130] [2020-11-12 09:45:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:56,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568198130] [2020-11-12 09:45:56,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265116778] [2020-11-12 09:45:56,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:56,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:45:56,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:45:56,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:56,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:56,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:45:56,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:45:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:56,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:45:56,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:45:56,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843568162] [2020-11-12 09:45:56,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:45:56,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:45:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:45:56,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:45:56,279 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:45:58,958 INFO L93 Difference]: Finished difference Result 1926 states and 2381 transitions. [2020-11-12 09:45:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:45:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:45:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:45:58,960 INFO L225 Difference]: With dead ends: 1926 [2020-11-12 09:45:58,960 INFO L226 Difference]: Without dead ends: 1684 [2020-11-12 09:45:58,961 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1483, Invalid=4369, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 09:45:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2020-11-12 09:45:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1318. [2020-11-12 09:45:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:45:58,972 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:45:58,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:45:58,973 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:45:58,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:45:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:45:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:45:58,974 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:45:58,974 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:45:59,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-11-12 09:45:59,177 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:45:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:45:59,178 INFO L82 PathProgramCache]: Analyzing trace with hash 737875690, now seen corresponding path program 151 times [2020-11-12 09:45:59,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:45:59,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069694133] [2020-11-12 09:45:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:45:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:45:59,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069694133] [2020-11-12 09:45:59,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837621054] [2020-11-12 09:45:59,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:45:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:45:59,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:45:59,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:45:59,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:00,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:00,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:00,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:46:00,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013483551] [2020-11-12 09:46:00,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:46:00,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:00,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:46:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:46:00,060 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:02,911 INFO L93 Difference]: Finished difference Result 1904 states and 2355 transitions. [2020-11-12 09:46:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:46:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:46:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:02,913 INFO L225 Difference]: With dead ends: 1904 [2020-11-12 09:46:02,913 INFO L226 Difference]: Without dead ends: 1662 [2020-11-12 09:46:02,913 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1619, Invalid=4543, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:46:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2020-11-12 09:46:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1318. [2020-11-12 09:46:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1254 states have (on average 1.3692185007974482) internal successors, (1717), 1317 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1717 transitions. [2020-11-12 09:46:02,926 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1717 transitions. Word has length 146 [2020-11-12 09:46:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:02,926 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 1717 transitions. [2020-11-12 09:46:02,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1717 transitions. [2020-11-12 09:46:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:46:02,927 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:02,927 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:03,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-11-12 09:46:03,128 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:03,128 INFO L82 PathProgramCache]: Analyzing trace with hash 363646378, now seen corresponding path program 152 times [2020-11-12 09:46:03,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:03,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094038385] [2020-11-12 09:46:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:03,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094038385] [2020-11-12 09:46:03,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340651539] [2020-11-12 09:46:03,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:03,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:46:03,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:03,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:46:03,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:03,922 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:03,990 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:04,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:04,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:46:04,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995197962] [2020-11-12 09:46:04,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:46:04,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:04,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:46:04,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:46:04,011 INFO L87 Difference]: Start difference. First operand 1318 states and 1717 transitions. Second operand has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:07,063 INFO L93 Difference]: Finished difference Result 2283 states and 2759 transitions. [2020-11-12 09:46:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:46:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:46:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:07,065 INFO L225 Difference]: With dead ends: 2283 [2020-11-12 09:46:07,065 INFO L226 Difference]: Without dead ends: 1732 [2020-11-12 09:46:07,066 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1794, Invalid=5012, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 09:46:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-11-12 09:46:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1322. [2020-11-12 09:46:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1258 states have (on average 1.368839427662957) internal successors, (1722), 1321 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1722 transitions. [2020-11-12 09:46:07,078 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1722 transitions. Word has length 146 [2020-11-12 09:46:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:07,078 INFO L481 AbstractCegarLoop]: Abstraction has 1322 states and 1722 transitions. [2020-11-12 09:46:07,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.0) internal successors, (155), 31 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1722 transitions. [2020-11-12 09:46:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-12 09:46:07,079 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:07,080 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:07,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:07,282 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1480185216, now seen corresponding path program 153 times [2020-11-12 09:46:07,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:07,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25450753] [2020-11-12 09:46:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:07,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25450753] [2020-11-12 09:46:07,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952800452] [2020-11-12 09:46:07,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:08,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 09:46:08,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:08,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-12 09:46:08,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:08,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:08,148 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:08,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:08,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-12 09:46:08,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535962731] [2020-11-12 09:46:08,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:46:08,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:08,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:46:08,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:46:08,166 INFO L87 Difference]: Start difference. First operand 1322 states and 1722 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:11,332 INFO L93 Difference]: Finished difference Result 2458 states and 2959 transitions. [2020-11-12 09:46:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-12 09:46:11,332 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2020-11-12 09:46:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:11,333 INFO L225 Difference]: With dead ends: 2458 [2020-11-12 09:46:11,334 INFO L226 Difference]: Without dead ends: 1724 [2020-11-12 09:46:11,334 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1989, Invalid=5321, Unknown=0, NotChecked=0, Total=7310 [2020-11-12 09:46:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2020-11-12 09:46:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1332. [2020-11-12 09:46:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:11,345 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 146 [2020-11-12 09:46:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:11,346 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:11,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:11,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:11,346 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:11,347 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:11,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:11,547 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:11,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1970968001, now seen corresponding path program 154 times [2020-11-12 09:46:11,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:11,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286688343] [2020-11-12 09:46:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:12,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286688343] [2020-11-12 09:46:12,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273134051] [2020-11-12 09:46:12,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:12,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:46:12,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:12,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:46:12,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:12,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:12,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:12,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:12,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:12,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983216900] [2020-11-12 09:46:12,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:12,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:12,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:12,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:12,666 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:14,200 INFO L93 Difference]: Finished difference Result 2124 states and 2617 transitions. [2020-11-12 09:46:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:46:14,201 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:14,202 INFO L225 Difference]: With dead ends: 2124 [2020-11-12 09:46:14,202 INFO L226 Difference]: Without dead ends: 1882 [2020-11-12 09:46:14,202 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1040, Invalid=2992, Unknown=0, NotChecked=0, Total=4032 [2020-11-12 09:46:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2020-11-12 09:46:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1332. [2020-11-12 09:46:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:14,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:14,214 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:14,214 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:14,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:14,215 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:14,215 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:14,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:14,416 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1305661695, now seen corresponding path program 155 times [2020-11-12 09:46:14,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:14,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308558759] [2020-11-12 09:46:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:15,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308558759] [2020-11-12 09:46:15,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340683425] [2020-11-12 09:46:15,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:15,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 09:46:15,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:15,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:15,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:15,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:15,486 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:15,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:15,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:15,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640351177] [2020-11-12 09:46:15,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:15,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:15,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:15,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:15,518 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:17,226 INFO L93 Difference]: Finished difference Result 2111 states and 2601 transitions. [2020-11-12 09:46:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:46:17,227 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:17,228 INFO L225 Difference]: With dead ends: 2111 [2020-11-12 09:46:17,228 INFO L226 Difference]: Without dead ends: 1869 [2020-11-12 09:46:17,228 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1055, Invalid=3235, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:46:17,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-11-12 09:46:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1332. [2020-11-12 09:46:17,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:17,240 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:17,240 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:17,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:17,241 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:17,242 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:17,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:17,442 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2136102977, now seen corresponding path program 156 times [2020-11-12 09:46:17,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:17,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962133944] [2020-11-12 09:46:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:18,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962133944] [2020-11-12 09:46:18,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002399430] [2020-11-12 09:46:18,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:18,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:46:18,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:18,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:18,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:18,414 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:18,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:18,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:18,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:18,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797115962] [2020-11-12 09:46:18,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:18,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:18,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:18,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:18,516 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:20,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:20,448 INFO L93 Difference]: Finished difference Result 2098 states and 2585 transitions. [2020-11-12 09:46:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:46:20,449 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:20,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:20,451 INFO L225 Difference]: With dead ends: 2098 [2020-11-12 09:46:20,451 INFO L226 Difference]: Without dead ends: 1856 [2020-11-12 09:46:20,451 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1086, Invalid=3470, Unknown=0, NotChecked=0, Total=4556 [2020-11-12 09:46:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-11-12 09:46:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1332. [2020-11-12 09:46:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:20,463 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:20,463 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:20,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:20,464 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:20,464 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:20,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:20,665 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1075965567, now seen corresponding path program 157 times [2020-11-12 09:46:20,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:20,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808801152] [2020-11-12 09:46:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:21,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808801152] [2020-11-12 09:46:21,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827834381] [2020-11-12 09:46:21,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:21,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:21,605 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:21,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:21,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:21,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:21,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982500261] [2020-11-12 09:46:21,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:21,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:21,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:21,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:21,706 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:23,822 INFO L93 Difference]: Finished difference Result 2085 states and 2569 transitions. [2020-11-12 09:46:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:46:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:23,823 INFO L225 Difference]: With dead ends: 2085 [2020-11-12 09:46:23,823 INFO L226 Difference]: Without dead ends: 1843 [2020-11-12 09:46:23,824 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1133, Invalid=3697, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 09:46:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-11-12 09:46:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1332. [2020-11-12 09:46:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:23,836 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:23,836 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:23,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:23,837 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:23,837 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:24,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:24,038 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:24,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1211868479, now seen corresponding path program 158 times [2020-11-12 09:46:24,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:24,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234611183] [2020-11-12 09:46:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:24,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234611183] [2020-11-12 09:46:24,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922385575] [2020-11-12 09:46:24,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:24,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:46:24,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:24,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:24,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:24,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:25,019 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:25,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:25,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:25,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19571020] [2020-11-12 09:46:25,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:25,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:25,047 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:27,313 INFO L93 Difference]: Finished difference Result 2072 states and 2553 transitions. [2020-11-12 09:46:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:46:27,313 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:27,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:27,315 INFO L225 Difference]: With dead ends: 2072 [2020-11-12 09:46:27,315 INFO L226 Difference]: Without dead ends: 1830 [2020-11-12 09:46:27,315 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1196, Invalid=3916, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 09:46:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-11-12 09:46:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1332. [2020-11-12 09:46:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:27,327 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:27,327 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:27,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:27,328 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:27,328 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:27,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:27,529 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1274622977, now seen corresponding path program 159 times [2020-11-12 09:46:27,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:27,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019737897] [2020-11-12 09:46:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:28,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019737897] [2020-11-12 09:46:28,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048978032] [2020-11-12 09:46:28,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:28,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 09:46:28,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:28,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:28,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:28,432 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:28,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:28,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:28,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:28,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516185972] [2020-11-12 09:46:28,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:28,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:28,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:28,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:28,531 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:30,801 INFO L93 Difference]: Finished difference Result 2059 states and 2537 transitions. [2020-11-12 09:46:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:46:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:30,803 INFO L225 Difference]: With dead ends: 2059 [2020-11-12 09:46:30,803 INFO L226 Difference]: Without dead ends: 1817 [2020-11-12 09:46:30,803 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1275, Invalid=4127, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 09:46:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2020-11-12 09:46:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1332. [2020-11-12 09:46:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:30,815 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:30,816 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:30,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:30,817 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:30,817 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:31,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-11-12 09:46:31,017 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:31,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1114676545, now seen corresponding path program 160 times [2020-11-12 09:46:31,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:31,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467145739] [2020-11-12 09:46:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:31,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467145739] [2020-11-12 09:46:31,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641139506] [2020-11-12 09:46:31,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:31,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:46:31,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:31,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:46:31,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:31,897 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:31,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:32,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:32,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:32,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236677899] [2020-11-12 09:46:32,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:32,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:32,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:32,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:32,001 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:34,544 INFO L93 Difference]: Finished difference Result 2046 states and 2521 transitions. [2020-11-12 09:46:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:46:34,544 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:34,546 INFO L225 Difference]: With dead ends: 2046 [2020-11-12 09:46:34,546 INFO L226 Difference]: Without dead ends: 1804 [2020-11-12 09:46:34,546 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1413 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1370, Invalid=4330, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 09:46:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-11-12 09:46:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1332. [2020-11-12 09:46:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:34,558 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:34,558 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:34,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:34,560 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:34,560 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:34,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-11-12 09:46:34,774 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2111924607, now seen corresponding path program 161 times [2020-11-12 09:46:34,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:34,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970809564] [2020-11-12 09:46:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:35,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970809564] [2020-11-12 09:46:35,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850140771] [2020-11-12 09:46:35,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:35,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-12 09:46:35,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:35,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:35,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:35,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:35,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:35,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:35,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:35,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020047590] [2020-11-12 09:46:35,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:35,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:35,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:35,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:35,745 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:38,393 INFO L93 Difference]: Finished difference Result 2033 states and 2505 transitions. [2020-11-12 09:46:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:46:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:38,395 INFO L225 Difference]: With dead ends: 2033 [2020-11-12 09:46:38,395 INFO L226 Difference]: Without dead ends: 1791 [2020-11-12 09:46:38,395 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1481, Invalid=4525, Unknown=0, NotChecked=0, Total=6006 [2020-11-12 09:46:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2020-11-12 09:46:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1332. [2020-11-12 09:46:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:38,407 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:38,407 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:38,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:38,408 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:38,408 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:38,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-11-12 09:46:38,609 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1391927233, now seen corresponding path program 162 times [2020-11-12 09:46:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:38,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20961784] [2020-11-12 09:46:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:39,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20961784] [2020-11-12 09:46:39,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393611948] [2020-11-12 09:46:39,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:39,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-12 09:46:39,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:39,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:39,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:39,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:39,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:39,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001348978] [2020-11-12 09:46:39,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:39,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:39,610 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:42,458 INFO L93 Difference]: Finished difference Result 2020 states and 2489 transitions. [2020-11-12 09:46:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:46:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:42,460 INFO L225 Difference]: With dead ends: 2020 [2020-11-12 09:46:42,460 INFO L226 Difference]: Without dead ends: 1778 [2020-11-12 09:46:42,460 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1608, Invalid=4712, Unknown=0, NotChecked=0, Total=6320 [2020-11-12 09:46:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-12 09:46:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1332. [2020-11-12 09:46:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:42,472 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:42,472 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:42,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:42,473 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:42,474 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:42,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-11-12 09:46:42,674 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1645332223, now seen corresponding path program 163 times [2020-11-12 09:46:42,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:42,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005106996] [2020-11-12 09:46:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:43,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005106996] [2020-11-12 09:46:43,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813455633] [2020-11-12 09:46:43,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:43,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:43,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:43,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:43,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:43,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:43,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:43,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247101595] [2020-11-12 09:46:43,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:43,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:43,638 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:46,694 INFO L93 Difference]: Finished difference Result 2007 states and 2473 transitions. [2020-11-12 09:46:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:46:46,694 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:46,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:46,696 INFO L225 Difference]: With dead ends: 2007 [2020-11-12 09:46:46,697 INFO L226 Difference]: Without dead ends: 1765 [2020-11-12 09:46:46,697 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1751, Invalid=4891, Unknown=0, NotChecked=0, Total=6642 [2020-11-12 09:46:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2020-11-12 09:46:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1332. [2020-11-12 09:46:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1331 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1735 transitions. [2020-11-12 09:46:46,709 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1735 transitions. Word has length 151 [2020-11-12 09:46:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:46,709 INFO L481 AbstractCegarLoop]: Abstraction has 1332 states and 1735 transitions. [2020-11-12 09:46:46,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1735 transitions. [2020-11-12 09:46:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:46,710 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:46,711 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:46,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:46,917 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1271102911, now seen corresponding path program 164 times [2020-11-12 09:46:46,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:46,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713420936] [2020-11-12 09:46:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:47,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713420936] [2020-11-12 09:46:47,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659889437] [2020-11-12 09:46:47,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:47,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:46:47,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:47,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:47,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:47,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:47,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 4 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:47,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:47,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-11-12 09:46:47,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861334826] [2020-11-12 09:46:47,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-12 09:46:47,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:47,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-12 09:46:47,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2020-11-12 09:46:47,886 INFO L87 Difference]: Start difference. First operand 1332 states and 1735 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:51,036 INFO L93 Difference]: Finished difference Result 2001 states and 2467 transitions. [2020-11-12 09:46:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:46:51,036 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:51,038 INFO L225 Difference]: With dead ends: 2001 [2020-11-12 09:46:51,038 INFO L226 Difference]: Without dead ends: 1787 [2020-11-12 09:46:51,038 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1910, Invalid=5062, Unknown=0, NotChecked=0, Total=6972 [2020-11-12 09:46:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-11-12 09:46:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1336. [2020-11-12 09:46:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1272 states have (on average 1.3679245283018868) internal successors, (1740), 1335 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1740 transitions. [2020-11-12 09:46:51,050 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1740 transitions. Word has length 151 [2020-11-12 09:46:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:51,050 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1740 transitions. [2020-11-12 09:46:51,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1740 transitions. [2020-11-12 09:46:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-12 09:46:51,051 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:51,051 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:51,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:51,252 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash -572728683, now seen corresponding path program 165 times [2020-11-12 09:46:51,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:51,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745914649] [2020-11-12 09:46:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:52,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745914649] [2020-11-12 09:46:52,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110616485] [2020-11-12 09:46:52,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:52,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-11-12 09:46:52,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:52,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-12 09:46:52,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:52,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:52,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:52,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:52,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-11-12 09:46:52,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726241101] [2020-11-12 09:46:52,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-12 09:46:52,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:52,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-12 09:46:52,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2020-11-12 09:46:52,219 INFO L87 Difference]: Start difference. First operand 1336 states and 1740 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:55,362 INFO L93 Difference]: Finished difference Result 2306 states and 2846 transitions. [2020-11-12 09:46:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-11-12 09:46:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2020-11-12 09:46:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:55,366 INFO L225 Difference]: With dead ends: 2306 [2020-11-12 09:46:55,366 INFO L226 Difference]: Without dead ends: 1770 [2020-11-12 09:46:55,366 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2056, Invalid=5084, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 09:46:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-11-12 09:46:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1346. [2020-11-12 09:46:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1282 states have (on average 1.3673946957878316) internal successors, (1753), 1345 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1753 transitions. [2020-11-12 09:46:55,378 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1753 transitions. Word has length 151 [2020-11-12 09:46:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:55,378 INFO L481 AbstractCegarLoop]: Abstraction has 1346 states and 1753 transitions. [2020-11-12 09:46:55,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1753 transitions. [2020-11-12 09:46:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:46:55,379 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:55,379 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:55,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2020-11-12 09:46:55,580 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1482931349, now seen corresponding path program 166 times [2020-11-12 09:46:55,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:55,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617047906] [2020-11-12 09:46:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:56,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617047906] [2020-11-12 09:46:56,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116439603] [2020-11-12 09:46:56,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:56,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:46:56,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:56,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:46:56,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:56,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:56,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:46:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:56,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:46:56,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 35 [2020-11-12 09:46:56,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885757356] [2020-11-12 09:46:56,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:46:56,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:46:56,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:46:56,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:46:56,782 INFO L87 Difference]: Start difference. First operand 1346 states and 1753 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:46:58,525 INFO L93 Difference]: Finished difference Result 2227 states and 2738 transitions. [2020-11-12 09:46:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-12 09:46:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:46:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:46:58,529 INFO L225 Difference]: With dead ends: 2227 [2020-11-12 09:46:58,529 INFO L226 Difference]: Without dead ends: 1985 [2020-11-12 09:46:58,529 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1206, Invalid=3084, Unknown=0, NotChecked=0, Total=4290 [2020-11-12 09:46:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2020-11-12 09:46:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1356. [2020-11-12 09:46:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1292 states have (on average 1.3660990712074303) internal successors, (1765), 1355 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1765 transitions. [2020-11-12 09:46:58,542 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1765 transitions. Word has length 156 [2020-11-12 09:46:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:46:58,542 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1765 transitions. [2020-11-12 09:46:58,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:46:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1765 transitions. [2020-11-12 09:46:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:46:58,543 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:46:58,543 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:46:58,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:58,748 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:46:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:46:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash -847440683, now seen corresponding path program 167 times [2020-11-12 09:46:58,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:46:58,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623048663] [2020-11-12 09:46:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:46:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:46:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:46:59,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623048663] [2020-11-12 09:46:59,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935203734] [2020-11-12 09:46:59,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:46:59,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:46:59,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:46:59,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:46:59,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:46:59,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:46:59,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 1 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:00,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:00,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:00,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384406090] [2020-11-12 09:47:00,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:00,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:00,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:00,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:00,024 INFO L87 Difference]: Start difference. First operand 1356 states and 1765 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:01,715 INFO L93 Difference]: Finished difference Result 2180 states and 2683 transitions. [2020-11-12 09:47:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-12 09:47:01,717 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:01,719 INFO L225 Difference]: With dead ends: 2180 [2020-11-12 09:47:01,719 INFO L226 Difference]: Without dead ends: 1938 [2020-11-12 09:47:01,719 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1112, Invalid=3048, Unknown=0, NotChecked=0, Total=4160 [2020-11-12 09:47:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-11-12 09:47:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1363. [2020-11-12 09:47:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:01,732 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:01,732 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:01,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:01,733 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:01,733 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:01,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,171 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:01,934 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1598622613, now seen corresponding path program 168 times [2020-11-12 09:47:01,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:01,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443889798] [2020-11-12 09:47:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:02,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443889798] [2020-11-12 09:47:02,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738813837] [2020-11-12 09:47:02,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:02,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-12 09:47:02,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:02,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:02,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:03,057 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:03,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:03,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:03,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:03,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3364172] [2020-11-12 09:47:03,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:03,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:03,169 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:05,051 INFO L93 Difference]: Finished difference Result 2167 states and 2667 transitions. [2020-11-12 09:47:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:47:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:05,054 INFO L225 Difference]: With dead ends: 2167 [2020-11-12 09:47:05,054 INFO L226 Difference]: Without dead ends: 1925 [2020-11-12 09:47:05,054 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1118, Invalid=3304, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 09:47:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2020-11-12 09:47:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1363. [2020-11-12 09:47:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:05,072 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:05,072 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:05,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:05,073 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:05,074 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:05,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:05,288 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash 580285013, now seen corresponding path program 169 times [2020-11-12 09:47:05,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:05,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116652310] [2020-11-12 09:47:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:06,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116652310] [2020-11-12 09:47:06,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103343695] [2020-11-12 09:47:06,206 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:06,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:06,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:06,361 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:06,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:06,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:06,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:06,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773815022] [2020-11-12 09:47:06,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:06,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:06,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:06,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:06,478 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:08,548 INFO L93 Difference]: Finished difference Result 2145 states and 2641 transitions. [2020-11-12 09:47:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:47:08,549 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:08,550 INFO L225 Difference]: With dead ends: 2145 [2020-11-12 09:47:08,550 INFO L226 Difference]: Without dead ends: 1903 [2020-11-12 09:47:08,551 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1140, Invalid=3552, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 09:47:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-11-12 09:47:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1363. [2020-11-12 09:47:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:08,564 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:08,564 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:08,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:08,565 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:08,566 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:08,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:08,766 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:08,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1433487637, now seen corresponding path program 170 times [2020-11-12 09:47:08,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:08,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888992790] [2020-11-12 09:47:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:09,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888992790] [2020-11-12 09:47:09,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812977443] [2020-11-12 09:47:09,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:09,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:47:09,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:09,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:09,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:09,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:09,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:09,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:09,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:09,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424450254] [2020-11-12 09:47:09,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:09,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:09,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:09,917 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:12,110 INFO L93 Difference]: Finished difference Result 2123 states and 2615 transitions. [2020-11-12 09:47:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:47:12,111 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:12,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:12,112 INFO L225 Difference]: With dead ends: 2123 [2020-11-12 09:47:12,112 INFO L226 Difference]: Without dead ends: 1881 [2020-11-12 09:47:12,113 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1178, Invalid=3792, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 09:47:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-11-12 09:47:12,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1363. [2020-11-12 09:47:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:12,125 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:12,125 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:12,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:12,126 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:12,126 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:12,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:12,327 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash 350588885, now seen corresponding path program 171 times [2020-11-12 09:47:12,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:12,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579423436] [2020-11-12 09:47:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:13,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579423436] [2020-11-12 09:47:13,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812229196] [2020-11-12 09:47:13,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:13,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 09:47:13,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:13,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:13,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:13,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:13,424 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:13,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:13,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:13,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328121633] [2020-11-12 09:47:13,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:13,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:13,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:13,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:13,456 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:15,847 INFO L93 Difference]: Finished difference Result 2101 states and 2589 transitions. [2020-11-12 09:47:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:47:15,847 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:15,849 INFO L225 Difference]: With dead ends: 2101 [2020-11-12 09:47:15,849 INFO L226 Difference]: Without dead ends: 1859 [2020-11-12 09:47:15,850 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1232, Invalid=4024, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 09:47:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2020-11-12 09:47:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1363. [2020-11-12 09:47:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:15,862 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:15,862 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:15,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:15,863 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:15,863 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:16,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-11-12 09:47:16,064 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:16,065 INFO L82 PathProgramCache]: Analyzing trace with hash 486491797, now seen corresponding path program 172 times [2020-11-12 09:47:16,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:16,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603712037] [2020-11-12 09:47:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:16,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603712037] [2020-11-12 09:47:16,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881073849] [2020-11-12 09:47:16,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:17,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:47:17,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:17,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:47:17,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:17,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:17,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:17,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:17,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:17,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943353107] [2020-11-12 09:47:17,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:17,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:17,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:17,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:17,175 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:19,823 INFO L93 Difference]: Finished difference Result 2079 states and 2563 transitions. [2020-11-12 09:47:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:47:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:19,825 INFO L225 Difference]: With dead ends: 2079 [2020-11-12 09:47:19,825 INFO L226 Difference]: Without dead ends: 1837 [2020-11-12 09:47:19,826 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1302, Invalid=4248, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 09:47:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2020-11-12 09:47:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1363. [2020-11-12 09:47:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:19,838 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:19,838 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:19,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:19,839 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:19,839 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:20,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-11-12 09:47:20,040 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:20,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1999999659, now seen corresponding path program 173 times [2020-11-12 09:47:20,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:20,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15583107] [2020-11-12 09:47:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:20,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15583107] [2020-11-12 09:47:20,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877165272] [2020-11-12 09:47:20,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:20,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:47:20,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:20,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:21,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:21,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:21,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:21,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:21,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185291636] [2020-11-12 09:47:21,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:21,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:21,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:21,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:21,114 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:23,920 INFO L93 Difference]: Finished difference Result 2057 states and 2537 transitions. [2020-11-12 09:47:23,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:47:23,921 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:23,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:23,923 INFO L225 Difference]: With dead ends: 2057 [2020-11-12 09:47:23,923 INFO L226 Difference]: Without dead ends: 1815 [2020-11-12 09:47:23,923 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1388, Invalid=4464, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 09:47:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2020-11-12 09:47:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1363. [2020-11-12 09:47:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:23,935 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:23,935 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:23,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:23,936 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:23,936 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:24,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:24,137 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1840053227, now seen corresponding path program 174 times [2020-11-12 09:47:24,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:24,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647230942] [2020-11-12 09:47:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:24,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647230942] [2020-11-12 09:47:24,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103029198] [2020-11-12 09:47:24,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:25,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 09:47:25,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:25,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:25,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:25,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:25,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:25,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:25,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:25,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621583754] [2020-11-12 09:47:25,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:25,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:25,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:25,216 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:28,188 INFO L93 Difference]: Finished difference Result 2035 states and 2511 transitions. [2020-11-12 09:47:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:47:28,188 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:28,189 INFO L225 Difference]: With dead ends: 2035 [2020-11-12 09:47:28,190 INFO L226 Difference]: Without dead ends: 1793 [2020-11-12 09:47:28,190 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1490, Invalid=4672, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:47:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-11-12 09:47:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1363. [2020-11-12 09:47:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:28,202 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:28,203 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:28,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:28,204 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:28,204 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:28,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2020-11-12 09:47:28,404 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:28,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1386547925, now seen corresponding path program 175 times [2020-11-12 09:47:28,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:28,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651166220] [2020-11-12 09:47:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:29,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651166220] [2020-11-12 09:47:29,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727860246] [2020-11-12 09:47:29,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:29,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:29,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:29,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:29,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:29,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:29,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:29,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019452823] [2020-11-12 09:47:29,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:29,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:29,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:29,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:29,453 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:32,557 INFO L93 Difference]: Finished difference Result 2013 states and 2485 transitions. [2020-11-12 09:47:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:47:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:32,559 INFO L225 Difference]: With dead ends: 2013 [2020-11-12 09:47:32,559 INFO L226 Difference]: Without dead ends: 1771 [2020-11-12 09:47:32,560 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1608, Invalid=4872, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 09:47:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2020-11-12 09:47:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1363. [2020-11-12 09:47:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:32,572 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:32,572 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:32,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:32,573 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:32,573 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:32,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:32,774 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2117303915, now seen corresponding path program 176 times [2020-11-12 09:47:32,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:32,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061328354] [2020-11-12 09:47:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:33,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061328354] [2020-11-12 09:47:33,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708290024] [2020-11-12 09:47:33,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:33,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:47:33,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:33,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:33,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:33,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:33,795 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:33,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:33,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:33,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388897877] [2020-11-12 09:47:33,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:33,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:33,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:33,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:33,820 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:37,145 INFO L93 Difference]: Finished difference Result 1991 states and 2459 transitions. [2020-11-12 09:47:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:47:37,145 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:37,146 INFO L225 Difference]: With dead ends: 1991 [2020-11-12 09:47:37,146 INFO L226 Difference]: Without dead ends: 1749 [2020-11-12 09:47:37,147 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1742, Invalid=5064, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 09:47:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-11-12 09:47:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1363. [2020-11-12 09:47:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:37,158 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:37,159 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:37,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:37,159 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:37,160 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:37,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:37,360 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:37,361 INFO L82 PathProgramCache]: Analyzing trace with hash 919955541, now seen corresponding path program 177 times [2020-11-12 09:47:37,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:37,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89870556] [2020-11-12 09:47:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:38,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89870556] [2020-11-12 09:47:38,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720358534] [2020-11-12 09:47:38,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:38,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 09:47:38,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:38,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:38,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:38,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:38,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:38,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:38,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018599852] [2020-11-12 09:47:38,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:38,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:38,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:38,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:38,426 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:41,865 INFO L93 Difference]: Finished difference Result 1969 states and 2433 transitions. [2020-11-12 09:47:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:47:41,865 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:41,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:41,867 INFO L225 Difference]: With dead ends: 1969 [2020-11-12 09:47:41,867 INFO L226 Difference]: Without dead ends: 1727 [2020-11-12 09:47:41,868 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1892, Invalid=5248, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 09:47:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-11-12 09:47:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1363. [2020-11-12 09:47:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1299 states have (on average 1.3648960739030023) internal successors, (1773), 1362 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1773 transitions. [2020-11-12 09:47:41,880 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1773 transitions. Word has length 156 [2020-11-12 09:47:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:41,880 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1773 transitions. [2020-11-12 09:47:41,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1773 transitions. [2020-11-12 09:47:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:41,881 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:41,882 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:42,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:42,082 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:42,083 INFO L82 PathProgramCache]: Analyzing trace with hash 545726229, now seen corresponding path program 178 times [2020-11-12 09:47:42,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:42,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111738746] [2020-11-12 09:47:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:42,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111738746] [2020-11-12 09:47:42,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446065] [2020-11-12 09:47:42,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:42,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:47:42,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:42,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:47:42,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:43,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:43,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:43,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:43,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:43,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855807474] [2020-11-12 09:47:43,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:43,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:43,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:43,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:43,114 INFO L87 Difference]: Start difference. First operand 1363 states and 1773 transitions. Second operand has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:46,888 INFO L93 Difference]: Finished difference Result 2348 states and 2837 transitions. [2020-11-12 09:47:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:47:46,888 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:46,889 INFO L225 Difference]: With dead ends: 2348 [2020-11-12 09:47:46,889 INFO L226 Difference]: Without dead ends: 1797 [2020-11-12 09:47:46,890 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2081, Invalid=5751, Unknown=0, NotChecked=0, Total=7832 [2020-11-12 09:47:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-11-12 09:47:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1367. [2020-11-12 09:47:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1303 states have (on average 1.3645433614735227) internal successors, (1778), 1366 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1778 transitions. [2020-11-12 09:47:46,902 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1778 transitions. Word has length 156 [2020-11-12 09:47:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:46,902 INFO L481 AbstractCegarLoop]: Abstraction has 1367 states and 1778 transitions. [2020-11-12 09:47:46,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1778 transitions. [2020-11-12 09:47:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-12 09:47:46,903 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:46,903 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:47,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:47,104 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1298105365, now seen corresponding path program 179 times [2020-11-12 09:47:47,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:47,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155275101] [2020-11-12 09:47:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:47,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155275101] [2020-11-12 09:47:47,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010118911] [2020-11-12 09:47:47,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:48,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 09:47:48,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:48,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-12 09:47:48,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:48,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:48,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:48,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:48,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-12 09:47:48,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040992474] [2020-11-12 09:47:48,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:48,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:48,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:48,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:48,137 INFO L87 Difference]: Start difference. First operand 1367 states and 1778 transitions. Second operand has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:52,133 INFO L93 Difference]: Finished difference Result 2523 states and 3037 transitions. [2020-11-12 09:47:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-12 09:47:52,133 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2020-11-12 09:47:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:52,135 INFO L225 Difference]: With dead ends: 2523 [2020-11-12 09:47:52,135 INFO L226 Difference]: Without dead ends: 1789 [2020-11-12 09:47:52,136 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2292, Invalid=6080, Unknown=0, NotChecked=0, Total=8372 [2020-11-12 09:47:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-11-12 09:47:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1377. [2020-11-12 09:47:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:47:52,147 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 156 [2020-11-12 09:47:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:52,148 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:47:52,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.848484848484849) internal successors, (160), 33 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:47:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:47:52,148 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:52,149 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:52,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186 [2020-11-12 09:47:52,349 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:52,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1371172522, now seen corresponding path program 180 times [2020-11-12 09:47:52,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:52,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079674003] [2020-11-12 09:47:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:53,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079674003] [2020-11-12 09:47:53,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896520568] [2020-11-12 09:47:53,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:53,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 09:47:53,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:47:53,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:47:53,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:53,602 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:53,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:53,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:53,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:47:53,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777757673] [2020-11-12 09:47:53,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:53,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:53,688 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:55,544 INFO L93 Difference]: Finished difference Result 2211 states and 2721 transitions. [2020-11-12 09:47:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:47:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:47:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:55,546 INFO L225 Difference]: With dead ends: 2211 [2020-11-12 09:47:55,546 INFO L226 Difference]: Without dead ends: 1969 [2020-11-12 09:47:55,546 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1139, Invalid=3283, Unknown=0, NotChecked=0, Total=4422 [2020-11-12 09:47:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2020-11-12 09:47:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1377. [2020-11-12 09:47:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:47:55,559 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:47:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:55,559 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:47:55,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:47:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:47:55,560 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:55,560 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:55,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:55,761 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash -477731478, now seen corresponding path program 181 times [2020-11-12 09:47:55,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:55,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746571902] [2020-11-12 09:47:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:56,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746571902] [2020-11-12 09:47:56,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179323044] [2020-11-12 09:47:56,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:47:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:47:56,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:47:56,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:47:56,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:47:56,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:47:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:47:56,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:47:56,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:47:56,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194537705] [2020-11-12 09:47:56,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:47:56,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:47:56,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:47:56,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:47:56,993 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:47:59,030 INFO L93 Difference]: Finished difference Result 2198 states and 2705 transitions. [2020-11-12 09:47:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:47:59,030 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:47:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:47:59,032 INFO L225 Difference]: With dead ends: 2198 [2020-11-12 09:47:59,033 INFO L226 Difference]: Without dead ends: 1956 [2020-11-12 09:47:59,033 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1153, Invalid=3539, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 09:47:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2020-11-12 09:47:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1377. [2020-11-12 09:47:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:47:59,046 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:47:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:47:59,046 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:47:59,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:47:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:47:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:47:59,047 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:47:59,047 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:47:59,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2020-11-12 09:47:59,248 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:47:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:47:59,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1496069078, now seen corresponding path program 182 times [2020-11-12 09:47:59,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:47:59,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907363282] [2020-11-12 09:47:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:47:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:00,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907363282] [2020-11-12 09:48:00,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233417565] [2020-11-12 09:48:00,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:00,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:48:00,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:00,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:00,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:00,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:00,434 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:00,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:00,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856613857] [2020-11-12 09:48:00,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:00,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:00,469 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:02,667 INFO L93 Difference]: Finished difference Result 2185 states and 2689 transitions. [2020-11-12 09:48:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:48:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:02,669 INFO L225 Difference]: With dead ends: 2185 [2020-11-12 09:48:02,669 INFO L226 Difference]: Without dead ends: 1943 [2020-11-12 09:48:02,670 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1183, Invalid=3787, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 09:48:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-11-12 09:48:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1377. [2020-11-12 09:48:02,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:02,682 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:02,682 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:02,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:02,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:02,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:02,683 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:02,683 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:02,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-11-12 09:48:02,884 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash -642866454, now seen corresponding path program 183 times [2020-11-12 09:48:02,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:02,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088893581] [2020-11-12 09:48:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:03,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088893581] [2020-11-12 09:48:03,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346545154] [2020-11-12 09:48:03,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:03,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 09:48:03,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:03,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:03,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:04,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:04,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:04,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:04,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:04,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063190697] [2020-11-12 09:48:04,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:04,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:04,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:04,092 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:06,473 INFO L93 Difference]: Finished difference Result 2172 states and 2673 transitions. [2020-11-12 09:48:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:48:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:06,474 INFO L225 Difference]: With dead ends: 2172 [2020-11-12 09:48:06,475 INFO L226 Difference]: Without dead ends: 1930 [2020-11-12 09:48:06,475 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1229, Invalid=4027, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 09:48:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-11-12 09:48:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1377. [2020-11-12 09:48:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:06,493 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:06,493 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:06,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:06,494 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:06,495 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:06,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:06,709 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1725765206, now seen corresponding path program 184 times [2020-11-12 09:48:06,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:06,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933511696] [2020-11-12 09:48:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:07,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933511696] [2020-11-12 09:48:07,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212247489] [2020-11-12 09:48:07,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:07,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:48:07,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:07,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:48:07,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:07,814 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:07,844 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:07,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:07,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:07,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18611009] [2020-11-12 09:48:07,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:07,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:07,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:07,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:07,888 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:10,461 INFO L93 Difference]: Finished difference Result 2159 states and 2657 transitions. [2020-11-12 09:48:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:48:10,462 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:10,463 INFO L225 Difference]: With dead ends: 2159 [2020-11-12 09:48:10,463 INFO L226 Difference]: Without dead ends: 1917 [2020-11-12 09:48:10,464 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1291, Invalid=4259, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 09:48:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-11-12 09:48:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1377. [2020-11-12 09:48:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:10,477 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:10,478 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:10,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:10,479 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:10,479 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:10,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:10,682 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1589862294, now seen corresponding path program 185 times [2020-11-12 09:48:10,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:10,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542066071] [2020-11-12 09:48:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:11,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542066071] [2020-11-12 09:48:11,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118916288] [2020-11-12 09:48:11,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:11,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 09:48:11,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:11,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:11,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:11,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:11,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:11,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:11,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:11,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357681779] [2020-11-12 09:48:11,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:11,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:11,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:11,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:11,822 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:14,702 INFO L93 Difference]: Finished difference Result 2146 states and 2641 transitions. [2020-11-12 09:48:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:48:14,702 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:14,704 INFO L225 Difference]: With dead ends: 2146 [2020-11-12 09:48:14,704 INFO L226 Difference]: Without dead ends: 1904 [2020-11-12 09:48:14,705 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1369, Invalid=4483, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 09:48:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-11-12 09:48:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1377. [2020-11-12 09:48:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:14,717 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:14,717 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:14,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:14,718 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:14,718 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:14,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:14,919 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 218613546, now seen corresponding path program 186 times [2020-11-12 09:48:14,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:14,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106692308] [2020-11-12 09:48:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:15,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106692308] [2020-11-12 09:48:15,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11971401] [2020-11-12 09:48:15,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:15,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 09:48:15,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:15,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:15,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:16,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:16,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:16,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:16,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:16,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019653140] [2020-11-12 09:48:16,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:16,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:16,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:16,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:16,064 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:19,095 INFO L93 Difference]: Finished difference Result 2133 states and 2625 transitions. [2020-11-12 09:48:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:48:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:19,097 INFO L225 Difference]: With dead ends: 2133 [2020-11-12 09:48:19,097 INFO L226 Difference]: Without dead ends: 1891 [2020-11-12 09:48:19,097 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1463, Invalid=4699, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:48:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-11-12 09:48:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1377. [2020-11-12 09:48:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:19,109 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:19,110 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:19,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:19,111 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:19,111 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:19,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2020-11-12 09:48:19,312 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash 378559978, now seen corresponding path program 187 times [2020-11-12 09:48:19,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:19,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599006335] [2020-11-12 09:48:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:20,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599006335] [2020-11-12 09:48:20,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39060334] [2020-11-12 09:48:20,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:20,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:20,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:20,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:20,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:20,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:20,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:20,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196211311] [2020-11-12 09:48:20,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:20,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:20,403 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:23,584 INFO L93 Difference]: Finished difference Result 2120 states and 2609 transitions. [2020-11-12 09:48:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:48:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:23,586 INFO L225 Difference]: With dead ends: 2120 [2020-11-12 09:48:23,586 INFO L226 Difference]: Without dead ends: 1878 [2020-11-12 09:48:23,586 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1573, Invalid=4907, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 09:48:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-11-12 09:48:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1377. [2020-11-12 09:48:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:23,598 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:23,599 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:23,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:23,600 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:23,600 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:23,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:23,800 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:23,801 INFO L82 PathProgramCache]: Analyzing trace with hash -689806166, now seen corresponding path program 188 times [2020-11-12 09:48:23,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:23,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676924990] [2020-11-12 09:48:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:24,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676924990] [2020-11-12 09:48:24,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494483790] [2020-11-12 09:48:24,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:24,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:48:24,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:24,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:24,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:24,829 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:24,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:24,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:24,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:24,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860501260] [2020-11-12 09:48:24,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:24,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:24,900 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:28,311 INFO L93 Difference]: Finished difference Result 2107 states and 2593 transitions. [2020-11-12 09:48:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:48:28,312 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:28,313 INFO L225 Difference]: With dead ends: 2107 [2020-11-12 09:48:28,313 INFO L226 Difference]: Without dead ends: 1865 [2020-11-12 09:48:28,314 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1699, Invalid=5107, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 09:48:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2020-11-12 09:48:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1377. [2020-11-12 09:48:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:28,327 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:28,328 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:28,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:28,329 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:28,329 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:28,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:28,529 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 101309290, now seen corresponding path program 189 times [2020-11-12 09:48:28,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:28,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741876183] [2020-11-12 09:48:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:29,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741876183] [2020-11-12 09:48:29,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496681885] [2020-11-12 09:48:29,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:29,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-12 09:48:29,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:29,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:29,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:29,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:29,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:29,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:29,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:29,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969830095] [2020-11-12 09:48:29,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:29,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:29,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:29,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:29,676 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:33,213 INFO L93 Difference]: Finished difference Result 2094 states and 2577 transitions. [2020-11-12 09:48:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:48:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:33,215 INFO L225 Difference]: With dead ends: 2094 [2020-11-12 09:48:33,215 INFO L226 Difference]: Without dead ends: 1852 [2020-11-12 09:48:33,216 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1841, Invalid=5299, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 09:48:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-11-12 09:48:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1377. [2020-11-12 09:48:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:33,230 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:33,230 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:33,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:33,231 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:33,231 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:33,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:33,432 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:33,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1156398550, now seen corresponding path program 190 times [2020-11-12 09:48:33,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:33,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607841380] [2020-11-12 09:48:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:34,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607841380] [2020-11-12 09:48:34,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020386337] [2020-11-12 09:48:34,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:34,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:48:34,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:34,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:48:34,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:34,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:34,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:34,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:34,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:34,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664218541] [2020-11-12 09:48:34,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:34,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:34,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:34,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:34,511 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:38,248 INFO L93 Difference]: Finished difference Result 2081 states and 2561 transitions. [2020-11-12 09:48:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 09:48:38,249 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:38,251 INFO L225 Difference]: With dead ends: 2081 [2020-11-12 09:48:38,251 INFO L226 Difference]: Without dead ends: 1839 [2020-11-12 09:48:38,251 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1999, Invalid=5483, Unknown=0, NotChecked=0, Total=7482 [2020-11-12 09:48:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-11-12 09:48:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1377. [2020-11-12 09:48:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1313 states have (on average 1.364051789794364) internal successors, (1791), 1376 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1791 transitions. [2020-11-12 09:48:38,263 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1791 transitions. Word has length 161 [2020-11-12 09:48:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:38,263 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1791 transitions. [2020-11-12 09:48:38,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1791 transitions. [2020-11-12 09:48:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:38,264 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:38,264 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:38,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:38,465 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:38,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1530627862, now seen corresponding path program 191 times [2020-11-12 09:48:38,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:38,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204633964] [2020-11-12 09:48:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:39,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204633964] [2020-11-12 09:48:39,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500307802] [2020-11-12 09:48:39,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:39,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-12 09:48:39,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:39,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:39,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:39,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:39,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:39,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:39,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-11-12 09:48:39,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725757527] [2020-11-12 09:48:39,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-12 09:48:39,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:39,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-12 09:48:39,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2020-11-12 09:48:39,554 INFO L87 Difference]: Start difference. First operand 1377 states and 1791 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:43,576 INFO L93 Difference]: Finished difference Result 2075 states and 2555 transitions. [2020-11-12 09:48:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:48:43,576 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:43,578 INFO L225 Difference]: With dead ends: 2075 [2020-11-12 09:48:43,578 INFO L226 Difference]: Without dead ends: 1861 [2020-11-12 09:48:43,578 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2173, Invalid=5659, Unknown=0, NotChecked=0, Total=7832 [2020-11-12 09:48:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-11-12 09:48:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1381. [2020-11-12 09:48:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1317 states have (on average 1.363705391040243) internal successors, (1796), 1380 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1796 transitions. [2020-11-12 09:48:43,590 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1796 transitions. Word has length 161 [2020-11-12 09:48:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:43,591 INFO L481 AbstractCegarLoop]: Abstraction has 1381 states and 1796 transitions. [2020-11-12 09:48:43,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1796 transitions. [2020-11-12 09:48:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-12 09:48:43,591 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:43,592 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:43,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198 [2020-11-12 09:48:43,792 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash 920507840, now seen corresponding path program 192 times [2020-11-12 09:48:43,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:43,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959556583] [2020-11-12 09:48:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:44,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959556583] [2020-11-12 09:48:44,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823195151] [2020-11-12 09:48:44,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:44,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-12 09:48:44,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:44,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-12 09:48:44,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:44,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:44,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:44,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:44,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2020-11-12 09:48:44,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947253180] [2020-11-12 09:48:44,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-12 09:48:44,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-12 09:48:44,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2020-11-12 09:48:44,940 INFO L87 Difference]: Start difference. First operand 1381 states and 1796 transitions. Second operand has 34 states, 34 states have (on average 4.852941176470588) internal successors, (165), 34 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:49,090 INFO L93 Difference]: Finished difference Result 2607 states and 3116 transitions. [2020-11-12 09:48:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-12 09:48:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.852941176470588) internal successors, (165), 34 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2020-11-12 09:48:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:49,091 INFO L225 Difference]: With dead ends: 2607 [2020-11-12 09:48:49,091 INFO L226 Difference]: Without dead ends: 1873 [2020-11-12 09:48:49,092 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2450, Invalid=6480, Unknown=0, NotChecked=0, Total=8930 [2020-11-12 09:48:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-11-12 09:48:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1211. [2020-11-12 09:48:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1147 states have (on average 1.3705318221447254) internal successors, (1572), 1210 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1572 transitions. [2020-11-12 09:48:49,103 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1572 transitions. Word has length 161 [2020-11-12 09:48:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:49,103 INFO L481 AbstractCegarLoop]: Abstraction has 1211 states and 1572 transitions. [2020-11-12 09:48:49,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.852941176470588) internal successors, (165), 34 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1572 transitions. [2020-11-12 09:48:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:48:49,104 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:49,104 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:49,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-11-12 09:48:49,305 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:49,306 INFO L82 PathProgramCache]: Analyzing trace with hash 674123136, now seen corresponding path program 193 times [2020-11-12 09:48:49,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:49,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764709766] [2020-11-12 09:48:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:50,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764709766] [2020-11-12 09:48:50,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643646656] [2020-11-12 09:48:50,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:50,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:48:50,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:50,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:50,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:50,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:50,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 37 [2020-11-12 09:48:50,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503755794] [2020-11-12 09:48:50,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:48:50,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:48:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:48:50,825 INFO L87 Difference]: Start difference. First operand 1211 states and 1572 transitions. Second operand has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:53,220 INFO L93 Difference]: Finished difference Result 2106 states and 2573 transitions. [2020-11-12 09:48:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-12 09:48:53,221 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:48:53,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:53,223 INFO L225 Difference]: With dead ends: 2106 [2020-11-12 09:48:53,223 INFO L226 Difference]: Without dead ends: 1864 [2020-11-12 09:48:53,224 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1364, Invalid=3466, Unknown=0, NotChecked=0, Total=4830 [2020-11-12 09:48:53,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2020-11-12 09:48:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1221. [2020-11-12 09:48:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1157 states have (on average 1.369057908383751) internal successors, (1584), 1220 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1584 transitions. [2020-11-12 09:48:53,235 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1584 transitions. Word has length 166 [2020-11-12 09:48:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:53,235 INFO L481 AbstractCegarLoop]: Abstraction has 1221 states and 1584 transitions. [2020-11-12 09:48:53,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1584 transitions. [2020-11-12 09:48:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:48:53,236 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:53,236 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:53,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-11-12 09:48:53,437 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1465494080, now seen corresponding path program 194 times [2020-11-12 09:48:53,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:53,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687249574] [2020-11-12 09:48:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:54,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687249574] [2020-11-12 09:48:54,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846933460] [2020-11-12 09:48:54,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:54,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:48:54,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:54,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:48:54,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:54,831 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:54,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 1 proven. 831 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:54,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:54,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:48:54,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377747306] [2020-11-12 09:48:54,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:48:54,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:54,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:48:54,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:48:54,989 INFO L87 Difference]: Start difference. First operand 1221 states and 1584 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:48:57,135 INFO L93 Difference]: Finished difference Result 2103 states and 2571 transitions. [2020-11-12 09:48:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-12 09:48:57,136 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:48:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:48:57,138 INFO L225 Difference]: With dead ends: 2103 [2020-11-12 09:48:57,138 INFO L226 Difference]: Without dead ends: 1861 [2020-11-12 09:48:57,139 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1263, Invalid=3429, Unknown=0, NotChecked=0, Total=4692 [2020-11-12 09:48:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-11-12 09:48:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1244. [2020-11-12 09:48:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1180 states have (on average 1.366949152542373) internal successors, (1613), 1243 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1613 transitions. [2020-11-12 09:48:57,151 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1613 transitions. Word has length 166 [2020-11-12 09:48:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:48:57,151 INFO L481 AbstractCegarLoop]: Abstraction has 1244 states and 1613 transitions. [2020-11-12 09:48:57,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:48:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1613 transitions. [2020-11-12 09:48:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:48:57,152 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:48:57,152 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:48:57,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-11-12 09:48:57,353 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:48:57,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:48:57,353 INFO L82 PathProgramCache]: Analyzing trace with hash 670882944, now seen corresponding path program 195 times [2020-11-12 09:48:57,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:48:57,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624249688] [2020-11-12 09:48:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:48:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:48:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:58,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624249688] [2020-11-12 09:48:58,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177781728] [2020-11-12 09:48:58,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:48:58,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:48:58,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:48:58,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:48:58,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:48:58,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:48:58,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:48:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:48:58,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:48:58,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:48:58,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607427982] [2020-11-12 09:48:58,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:48:58,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:48:58,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:48:58,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:48:58,895 INFO L87 Difference]: Start difference. First operand 1244 states and 1613 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:01,261 INFO L93 Difference]: Finished difference Result 2104 states and 2573 transitions. [2020-11-12 09:49:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:49:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:01,263 INFO L225 Difference]: With dead ends: 2104 [2020-11-12 09:49:01,263 INFO L226 Difference]: Without dead ends: 1862 [2020-11-12 09:49:01,264 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1267, Invalid=3703, Unknown=0, NotChecked=0, Total=4970 [2020-11-12 09:49:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2020-11-12 09:49:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1258. [2020-11-12 09:49:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1194 states have (on average 1.365996649916248) internal successors, (1631), 1257 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1631 transitions. [2020-11-12 09:49:01,276 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1631 transitions. Word has length 166 [2020-11-12 09:49:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:01,276 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 1631 transitions. [2020-11-12 09:49:01,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1631 transitions. [2020-11-12 09:49:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:01,277 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:01,277 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:01,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:01,478 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:01,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:01,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1178021056, now seen corresponding path program 196 times [2020-11-12 09:49:01,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:01,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133818010] [2020-11-12 09:49:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:02,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133818010] [2020-11-12 09:49:02,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258568502] [2020-11-12 09:49:02,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:02,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:49:02,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:02,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:49:02,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:02,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:02,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:02,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:02,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:02,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705753886] [2020-11-12 09:49:02,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:02,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:02,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:02,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:02,933 INFO L87 Difference]: Start difference. First operand 1258 states and 1631 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:05,631 INFO L93 Difference]: Finished difference Result 2096 states and 2565 transitions. [2020-11-12 09:49:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:49:05,631 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:05,633 INFO L225 Difference]: With dead ends: 2096 [2020-11-12 09:49:05,633 INFO L226 Difference]: Without dead ends: 1854 [2020-11-12 09:49:05,633 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1287, Invalid=3969, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 09:49:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-11-12 09:49:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1272. [2020-11-12 09:49:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1208 states have (on average 1.365066225165563) internal successors, (1649), 1271 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1649 transitions. [2020-11-12 09:49:05,645 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1649 transitions. Word has length 166 [2020-11-12 09:49:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:05,646 INFO L481 AbstractCegarLoop]: Abstraction has 1272 states and 1649 transitions. [2020-11-12 09:49:05,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1649 transitions. [2020-11-12 09:49:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:05,647 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:05,647 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:05,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-11-12 09:49:05,847 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2098608640, now seen corresponding path program 197 times [2020-11-12 09:49:05,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:05,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424615483] [2020-11-12 09:49:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:06,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424615483] [2020-11-12 09:49:06,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619855079] [2020-11-12 09:49:06,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:07,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:49:07,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:07,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:07,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:07,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:07,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:07,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:07,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:07,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212268568] [2020-11-12 09:49:07,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:07,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:07,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:07,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:07,267 INFO L87 Difference]: Start difference. First operand 1272 states and 1649 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:10,228 INFO L93 Difference]: Finished difference Result 2088 states and 2557 transitions. [2020-11-12 09:49:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:49:10,228 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:10,241 INFO L225 Difference]: With dead ends: 2088 [2020-11-12 09:49:10,241 INFO L226 Difference]: Without dead ends: 1846 [2020-11-12 09:49:10,241 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1323, Invalid=4227, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 09:49:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-11-12 09:49:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1286. [2020-11-12 09:49:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1222 states have (on average 1.3641571194762685) internal successors, (1667), 1285 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1667 transitions. [2020-11-12 09:49:10,254 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1667 transitions. Word has length 166 [2020-11-12 09:49:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:10,254 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1667 transitions. [2020-11-12 09:49:10,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1667 transitions. [2020-11-12 09:49:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:10,255 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:10,255 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:10,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:10,456 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:10,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1343156032, now seen corresponding path program 198 times [2020-11-12 09:49:10,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:10,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631418681] [2020-11-12 09:49:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:11,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631418681] [2020-11-12 09:49:11,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103951476] [2020-11-12 09:49:11,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:11,651 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-12 09:49:11,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:11,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:11,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:11,710 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:11,796 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:11,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:11,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:11,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170009219] [2020-11-12 09:49:11,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:11,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:11,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:11,832 INFO L87 Difference]: Start difference. First operand 1286 states and 1667 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:14,878 INFO L93 Difference]: Finished difference Result 2080 states and 2549 transitions. [2020-11-12 09:49:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:49:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:14,879 INFO L225 Difference]: With dead ends: 2080 [2020-11-12 09:49:14,879 INFO L226 Difference]: Without dead ends: 1838 [2020-11-12 09:49:14,880 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1375, Invalid=4477, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 09:49:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-11-12 09:49:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1300. [2020-11-12 09:49:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1236 states have (on average 1.3632686084142396) internal successors, (1685), 1299 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1685 transitions. [2020-11-12 09:49:14,892 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1685 transitions. Word has length 166 [2020-11-12 09:49:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:14,892 INFO L481 AbstractCegarLoop]: Abstraction has 1300 states and 1685 transitions. [2020-11-12 09:49:14,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1685 transitions. [2020-11-12 09:49:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:14,893 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:14,893 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:15,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2020-11-12 09:49:15,094 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:15,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1868912512, now seen corresponding path program 199 times [2020-11-12 09:49:15,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:15,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781853537] [2020-11-12 09:49:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:16,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781853537] [2020-11-12 09:49:16,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982988890] [2020-11-12 09:49:16,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:16,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:16,424 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:16,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:16,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:16,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345743072] [2020-11-12 09:49:16,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:16,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:16,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:16,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:16,459 INFO L87 Difference]: Start difference. First operand 1300 states and 1685 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:19,700 INFO L93 Difference]: Finished difference Result 2072 states and 2541 transitions. [2020-11-12 09:49:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:49:19,700 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:19,702 INFO L225 Difference]: With dead ends: 2072 [2020-11-12 09:49:19,702 INFO L226 Difference]: Without dead ends: 1830 [2020-11-12 09:49:19,702 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1443, Invalid=4719, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:49:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-11-12 09:49:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1314. [2020-11-12 09:49:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1250 states have (on average 1.3624) internal successors, (1703), 1313 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1703 transitions. [2020-11-12 09:49:19,715 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1703 transitions. Word has length 166 [2020-11-12 09:49:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:19,716 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1703 transitions. [2020-11-12 09:49:19,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1703 transitions. [2020-11-12 09:49:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:19,716 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:19,717 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:19,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:19,917 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2004815424, now seen corresponding path program 200 times [2020-11-12 09:49:19,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:19,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237547096] [2020-11-12 09:49:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:20,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237547096] [2020-11-12 09:49:20,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260115780] [2020-11-12 09:49:20,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:21,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:49:21,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:21,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:21,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:21,118 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:21,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:21,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:21,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:21,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815268163] [2020-11-12 09:49:21,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:21,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:21,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:21,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:21,240 INFO L87 Difference]: Start difference. First operand 1314 states and 1703 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:24,551 INFO L93 Difference]: Finished difference Result 2064 states and 2533 transitions. [2020-11-12 09:49:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:49:24,551 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:24,552 INFO L225 Difference]: With dead ends: 2064 [2020-11-12 09:49:24,552 INFO L226 Difference]: Without dead ends: 1822 [2020-11-12 09:49:24,553 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1527, Invalid=4953, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 09:49:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-11-12 09:49:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1328. [2020-11-12 09:49:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1264 states have (on average 1.3615506329113924) internal successors, (1721), 1327 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1721 transitions. [2020-11-12 09:49:24,566 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1721 transitions. Word has length 166 [2020-11-12 09:49:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:24,566 INFO L481 AbstractCegarLoop]: Abstraction has 1328 states and 1721 transitions. [2020-11-12 09:49:24,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1721 transitions. [2020-11-12 09:49:24,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:24,567 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:24,567 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:24,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:24,768 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash -481676032, now seen corresponding path program 201 times [2020-11-12 09:49:24,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:24,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019837392] [2020-11-12 09:49:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:25,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019837392] [2020-11-12 09:49:25,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109418577] [2020-11-12 09:49:25,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:26,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:49:26,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:26,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:26,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:26,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:26,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:26,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:26,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:26,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592554412] [2020-11-12 09:49:26,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:26,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:26,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:26,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:26,215 INFO L87 Difference]: Start difference. First operand 1328 states and 1721 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:29,765 INFO L93 Difference]: Finished difference Result 2056 states and 2525 transitions. [2020-11-12 09:49:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:49:29,766 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:29,767 INFO L225 Difference]: With dead ends: 2056 [2020-11-12 09:49:29,767 INFO L226 Difference]: Without dead ends: 1814 [2020-11-12 09:49:29,768 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1627, Invalid=5179, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 09:49:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-11-12 09:49:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1342. [2020-11-12 09:49:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1278 states have (on average 1.3607198748043818) internal successors, (1739), 1341 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1739 transitions. [2020-11-12 09:49:29,781 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1739 transitions. Word has length 166 [2020-11-12 09:49:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:29,781 INFO L481 AbstractCegarLoop]: Abstraction has 1342 states and 1739 transitions. [2020-11-12 09:49:29,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1739 transitions. [2020-11-12 09:49:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:29,782 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:29,783 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:29,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:29,985 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:29,986 INFO L82 PathProgramCache]: Analyzing trace with hash -321729600, now seen corresponding path program 202 times [2020-11-12 09:49:29,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:29,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605399754] [2020-11-12 09:49:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:30,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605399754] [2020-11-12 09:49:30,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951445130] [2020-11-12 09:49:30,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:31,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:49:31,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:31,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:49:31,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:31,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:31,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:31,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:31,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:31,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509257509] [2020-11-12 09:49:31,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:31,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:31,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:31,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:31,258 INFO L87 Difference]: Start difference. First operand 1342 states and 1739 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:35,250 INFO L93 Difference]: Finished difference Result 2048 states and 2517 transitions. [2020-11-12 09:49:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:49:35,250 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:35,252 INFO L225 Difference]: With dead ends: 2048 [2020-11-12 09:49:35,252 INFO L226 Difference]: Without dead ends: 1806 [2020-11-12 09:49:35,252 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1743, Invalid=5397, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 09:49:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-11-12 09:49:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1356. [2020-11-12 09:49:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1292 states have (on average 1.359907120743034) internal successors, (1757), 1355 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1757 transitions. [2020-11-12 09:49:35,264 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1757 transitions. Word has length 166 [2020-11-12 09:49:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:35,264 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1757 transitions. [2020-11-12 09:49:35,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1757 transitions. [2020-11-12 09:49:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:35,265 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:35,266 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:35,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:35,466 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1390095744, now seen corresponding path program 203 times [2020-11-12 09:49:35,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:35,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696688588] [2020-11-12 09:49:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696688588] [2020-11-12 09:49:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318054761] [2020-11-12 09:49:36,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:36,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:49:36,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:36,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:36,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:36,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:36,734 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:36,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:36,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:36,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712350002] [2020-11-12 09:49:36,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:36,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:36,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:36,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:36,763 INFO L87 Difference]: Start difference. First operand 1356 states and 1757 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:40,969 INFO L93 Difference]: Finished difference Result 2040 states and 2509 transitions. [2020-11-12 09:49:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:49:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:40,971 INFO L225 Difference]: With dead ends: 2040 [2020-11-12 09:49:40,971 INFO L226 Difference]: Without dead ends: 1798 [2020-11-12 09:49:40,971 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1875, Invalid=5607, Unknown=0, NotChecked=0, Total=7482 [2020-11-12 09:49:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-11-12 09:49:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1370. [2020-11-12 09:49:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1306 states have (on average 1.3591117917304747) internal successors, (1775), 1369 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1775 transitions. [2020-11-12 09:49:40,984 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1775 transitions. Word has length 166 [2020-11-12 09:49:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:40,984 INFO L481 AbstractCegarLoop]: Abstraction has 1370 states and 1775 transitions. [2020-11-12 09:49:40,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1775 transitions. [2020-11-12 09:49:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:40,985 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:40,985 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:41,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-11-12 09:49:41,186 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash -598980288, now seen corresponding path program 204 times [2020-11-12 09:49:41,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:41,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113079809] [2020-11-12 09:49:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:42,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113079809] [2020-11-12 09:49:42,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813759576] [2020-11-12 09:49:42,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:42,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-12 09:49:42,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:42,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:42,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:42,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:42,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:42,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:42,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:42,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67161718] [2020-11-12 09:49:42,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:42,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:42,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:42,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:42,487 INFO L87 Difference]: Start difference. First operand 1370 states and 1775 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:46,652 INFO L93 Difference]: Finished difference Result 2032 states and 2501 transitions. [2020-11-12 09:49:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 09:49:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:46,654 INFO L225 Difference]: With dead ends: 2032 [2020-11-12 09:49:46,654 INFO L226 Difference]: Without dead ends: 1790 [2020-11-12 09:49:46,654 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2023, Invalid=5809, Unknown=0, NotChecked=0, Total=7832 [2020-11-12 09:49:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2020-11-12 09:49:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1384. [2020-11-12 09:49:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1320 states have (on average 1.3583333333333334) internal successors, (1793), 1383 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1793 transitions. [2020-11-12 09:49:46,667 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1793 transitions. Word has length 166 [2020-11-12 09:49:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:46,667 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1793 transitions. [2020-11-12 09:49:46,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1793 transitions. [2020-11-12 09:49:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:46,668 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:46,668 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:46,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2020-11-12 09:49:46,869 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:46,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1856688128, now seen corresponding path program 205 times [2020-11-12 09:49:46,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:46,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12805547] [2020-11-12 09:49:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:47,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12805547] [2020-11-12 09:49:47,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443188592] [2020-11-12 09:49:47,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:48,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:48,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:48,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:48,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:48,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:48,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115962826] [2020-11-12 09:49:48,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:48,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:48,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:48,248 INFO L87 Difference]: Start difference. First operand 1384 states and 1793 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:52,722 INFO L93 Difference]: Finished difference Result 2024 states and 2493 transitions. [2020-11-12 09:49:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:49:52,723 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:52,724 INFO L225 Difference]: With dead ends: 2024 [2020-11-12 09:49:52,724 INFO L226 Difference]: Without dead ends: 1782 [2020-11-12 09:49:52,725 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2187, Invalid=6003, Unknown=0, NotChecked=0, Total=8190 [2020-11-12 09:49:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-11-12 09:49:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1398. [2020-11-12 09:49:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1334 states have (on average 1.3575712143928036) internal successors, (1811), 1397 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1811 transitions. [2020-11-12 09:49:52,738 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1811 transitions. Word has length 166 [2020-11-12 09:49:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:52,738 INFO L481 AbstractCegarLoop]: Abstraction has 1398 states and 1811 transitions. [2020-11-12 09:49:52,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1811 transitions. [2020-11-12 09:49:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:52,739 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:52,739 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:52,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-11-12 09:49:52,940 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:52,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2064049856, now seen corresponding path program 206 times [2020-11-12 09:49:52,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:52,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168281835] [2020-11-12 09:49:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:49:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:53,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168281835] [2020-11-12 09:49:53,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209532775] [2020-11-12 09:49:53,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:49:54,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:49:54,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:49:54,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:49:54,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:49:54,125 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:49:54,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:49:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 4 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:49:54,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:49:54,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-12 09:49:54,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432555095] [2020-11-12 09:49:54,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:49:54,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:49:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:49:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:49:54,244 INFO L87 Difference]: Start difference. First operand 1398 states and 1811 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:49:59,018 INFO L93 Difference]: Finished difference Result 2413 states and 2915 transitions. [2020-11-12 09:49:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-11-12 09:49:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:49:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:49:59,020 INFO L225 Difference]: With dead ends: 2413 [2020-11-12 09:49:59,020 INFO L226 Difference]: Without dead ends: 1862 [2020-11-12 09:49:59,021 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2390, Invalid=6540, Unknown=0, NotChecked=0, Total=8930 [2020-11-12 09:49:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2020-11-12 09:49:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1412. [2020-11-12 09:49:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1348 states have (on average 1.36053412462908) internal successors, (1834), 1411 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1834 transitions. [2020-11-12 09:49:59,032 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1834 transitions. Word has length 166 [2020-11-12 09:49:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:49:59,033 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 1834 transitions. [2020-11-12 09:49:59,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:49:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1834 transitions. [2020-11-12 09:49:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-12 09:49:59,034 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:49:59,034 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:49:59,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-11-12 09:49:59,234 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:49:59,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:49:59,235 INFO L82 PathProgramCache]: Analyzing trace with hash 220218262, now seen corresponding path program 207 times [2020-11-12 09:49:59,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:49:59,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695651446] [2020-11-12 09:49:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:49:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:00,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695651446] [2020-11-12 09:50:00,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438280017] [2020-11-12 09:50:00,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:00,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-12 09:50:00,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:00,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-12 09:50:00,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:00,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:00,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:00,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:00,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-11-12 09:50:00,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407824050] [2020-11-12 09:50:00,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-12 09:50:00,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-12 09:50:00,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2020-11-12 09:50:00,484 INFO L87 Difference]: Start difference. First operand 1412 states and 1834 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:05,159 INFO L93 Difference]: Finished difference Result 2325 states and 2876 transitions. [2020-11-12 09:50:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-12 09:50:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2020-11-12 09:50:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:05,162 INFO L225 Difference]: With dead ends: 2325 [2020-11-12 09:50:05,162 INFO L226 Difference]: Without dead ends: 1789 [2020-11-12 09:50:05,163 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2531, Invalid=6211, Unknown=0, NotChecked=0, Total=8742 [2020-11-12 09:50:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-11-12 09:50:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1244. [2020-11-12 09:50:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1180 states have (on average 1.366949152542373) internal successors, (1613), 1243 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1613 transitions. [2020-11-12 09:50:05,176 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1613 transitions. Word has length 166 [2020-11-12 09:50:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:05,176 INFO L481 AbstractCegarLoop]: Abstraction has 1244 states and 1613 transitions. [2020-11-12 09:50:05,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1613 transitions. [2020-11-12 09:50:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:05,177 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:05,177 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:05,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:05,377 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash 688990549, now seen corresponding path program 208 times [2020-11-12 09:50:05,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:05,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003968475] [2020-11-12 09:50:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:06,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003968475] [2020-11-12 09:50:06,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568099079] [2020-11-12 09:50:06,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:06,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:50:06,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:06,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:50:06,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:06,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:06,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:07,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:07,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:07,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404243454] [2020-11-12 09:50:07,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:07,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:07,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:07,020 INFO L87 Difference]: Start difference. First operand 1244 states and 1613 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:09,608 INFO L93 Difference]: Finished difference Result 2134 states and 2609 transitions. [2020-11-12 09:50:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:50:09,609 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:09,610 INFO L225 Difference]: With dead ends: 2134 [2020-11-12 09:50:09,611 INFO L226 Difference]: Without dead ends: 1892 [2020-11-12 09:50:09,611 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1340, Invalid=3772, Unknown=0, NotChecked=0, Total=5112 [2020-11-12 09:50:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2020-11-12 09:50:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1258. [2020-11-12 09:50:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1194 states have (on average 1.365996649916248) internal successors, (1631), 1257 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1631 transitions. [2020-11-12 09:50:09,622 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1631 transitions. Word has length 171 [2020-11-12 09:50:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:09,623 INFO L481 AbstractCegarLoop]: Abstraction has 1258 states and 1631 transitions. [2020-11-12 09:50:09,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1631 transitions. [2020-11-12 09:50:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:09,623 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:09,624 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:09,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-11-12 09:50:09,824 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:09,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1469599723, now seen corresponding path program 209 times [2020-11-12 09:50:09,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:09,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40608959] [2020-11-12 09:50:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:11,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40608959] [2020-11-12 09:50:11,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245150229] [2020-11-12 09:50:11,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:11,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:50:11,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:11,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:11,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:11,291 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:11,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:11,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:11,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:11,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215215649] [2020-11-12 09:50:11,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:11,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:11,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:11,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:11,426 INFO L87 Difference]: Start difference. First operand 1258 states and 1631 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:14,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:14,001 INFO L93 Difference]: Finished difference Result 2135 states and 2611 transitions. [2020-11-12 09:50:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:50:14,002 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:14,003 INFO L225 Difference]: With dead ends: 2135 [2020-11-12 09:50:14,003 INFO L226 Difference]: Without dead ends: 1893 [2020-11-12 09:50:14,004 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1351, Invalid=4051, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 09:50:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-11-12 09:50:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1272. [2020-11-12 09:50:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1208 states have (on average 1.365066225165563) internal successors, (1649), 1271 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1649 transitions. [2020-11-12 09:50:14,015 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1649 transitions. Word has length 171 [2020-11-12 09:50:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:14,016 INFO L481 AbstractCegarLoop]: Abstraction has 1272 states and 1649 transitions. [2020-11-12 09:50:14,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1649 transitions. [2020-11-12 09:50:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:14,016 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:14,017 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:14,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:14,217 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash 976463573, now seen corresponding path program 210 times [2020-11-12 09:50:14,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:14,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772481725] [2020-11-12 09:50:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:15,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772481725] [2020-11-12 09:50:15,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167222569] [2020-11-12 09:50:15,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:15,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-12 09:50:15,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:15,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:15,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:15,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:15,761 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:15,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:15,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:15,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807380443] [2020-11-12 09:50:15,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:15,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:15,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:15,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:15,813 INFO L87 Difference]: Start difference. First operand 1272 states and 1649 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:18,704 INFO L93 Difference]: Finished difference Result 2136 states and 2613 transitions. [2020-11-12 09:50:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:50:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:18,706 INFO L225 Difference]: With dead ends: 2136 [2020-11-12 09:50:18,706 INFO L226 Difference]: Without dead ends: 1894 [2020-11-12 09:50:18,707 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1378, Invalid=4322, Unknown=0, NotChecked=0, Total=5700 [2020-11-12 09:50:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-11-12 09:50:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1286. [2020-11-12 09:50:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1222 states have (on average 1.3641571194762685) internal successors, (1667), 1285 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1667 transitions. [2020-11-12 09:50:18,719 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1667 transitions. Word has length 171 [2020-11-12 09:50:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:18,719 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1667 transitions. [2020-11-12 09:50:18,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1667 transitions. [2020-11-12 09:50:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:18,720 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:18,720 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:18,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2020-11-12 09:50:18,921 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:18,922 INFO L82 PathProgramCache]: Analyzing trace with hash -41874027, now seen corresponding path program 211 times [2020-11-12 09:50:18,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:18,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223471291] [2020-11-12 09:50:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:20,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223471291] [2020-11-12 09:50:20,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797402641] [2020-11-12 09:50:20,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:20,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:20,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:20,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:20,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:20,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:20,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:20,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048915552] [2020-11-12 09:50:20,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:20,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:20,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:20,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:20,478 INFO L87 Difference]: Start difference. First operand 1286 states and 1667 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:23,505 INFO L93 Difference]: Finished difference Result 2137 states and 2615 transitions. [2020-11-12 09:50:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:50:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:23,507 INFO L225 Difference]: With dead ends: 2137 [2020-11-12 09:50:23,507 INFO L226 Difference]: Without dead ends: 1895 [2020-11-12 09:50:23,508 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1421, Invalid=4585, Unknown=0, NotChecked=0, Total=6006 [2020-11-12 09:50:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-11-12 09:50:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1300. [2020-11-12 09:50:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1236 states have (on average 1.3632686084142396) internal successors, (1685), 1299 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1685 transitions. [2020-11-12 09:50:23,520 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1685 transitions. Word has length 171 [2020-11-12 09:50:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:23,520 INFO L481 AbstractCegarLoop]: Abstraction has 1300 states and 1685 transitions. [2020-11-12 09:50:23,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1685 transitions. [2020-11-12 09:50:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:23,521 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:23,521 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:23,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:23,722 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 811328597, now seen corresponding path program 212 times [2020-11-12 09:50:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:23,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608914731] [2020-11-12 09:50:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:24,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608914731] [2020-11-12 09:50:24,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945617452] [2020-11-12 09:50:24,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:25,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:50:25,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:25,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:25,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:25,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:25,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:25,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:25,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:25,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341621011] [2020-11-12 09:50:25,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:25,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:25,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:25,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:25,249 INFO L87 Difference]: Start difference. First operand 1300 states and 1685 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:28,667 INFO L93 Difference]: Finished difference Result 2138 states and 2617 transitions. [2020-11-12 09:50:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:50:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:28,668 INFO L225 Difference]: With dead ends: 2138 [2020-11-12 09:50:28,668 INFO L226 Difference]: Without dead ends: 1896 [2020-11-12 09:50:28,669 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1480, Invalid=4840, Unknown=0, NotChecked=0, Total=6320 [2020-11-12 09:50:28,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2020-11-12 09:50:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1314. [2020-11-12 09:50:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1250 states have (on average 1.3624) internal successors, (1703), 1313 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1703 transitions. [2020-11-12 09:50:28,681 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1703 transitions. Word has length 171 [2020-11-12 09:50:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:28,681 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1703 transitions. [2020-11-12 09:50:28,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1703 transitions. [2020-11-12 09:50:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:28,682 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:28,682 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:28,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2020-11-12 09:50:28,883 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:28,884 INFO L82 PathProgramCache]: Analyzing trace with hash -271570155, now seen corresponding path program 213 times [2020-11-12 09:50:28,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:28,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739976252] [2020-11-12 09:50:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:30,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739976252] [2020-11-12 09:50:30,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158519284] [2020-11-12 09:50:30,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:30,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:50:30,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:30,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:30,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:30,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:30,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:30,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:30,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:30,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528822947] [2020-11-12 09:50:30,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:30,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:30,355 INFO L87 Difference]: Start difference. First operand 1314 states and 1703 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:33,751 INFO L93 Difference]: Finished difference Result 2139 states and 2619 transitions. [2020-11-12 09:50:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:50:33,751 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:33,753 INFO L225 Difference]: With dead ends: 2139 [2020-11-12 09:50:33,753 INFO L226 Difference]: Without dead ends: 1897 [2020-11-12 09:50:33,753 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1555, Invalid=5087, Unknown=0, NotChecked=0, Total=6642 [2020-11-12 09:50:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-11-12 09:50:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1328. [2020-11-12 09:50:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1264 states have (on average 1.3615506329113924) internal successors, (1721), 1327 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1721 transitions. [2020-11-12 09:50:33,765 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1721 transitions. Word has length 171 [2020-11-12 09:50:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:33,766 INFO L481 AbstractCegarLoop]: Abstraction has 1328 states and 1721 transitions. [2020-11-12 09:50:33,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1721 transitions. [2020-11-12 09:50:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:33,767 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:33,767 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:33,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:33,967 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:33,968 INFO L82 PathProgramCache]: Analyzing trace with hash -135667243, now seen corresponding path program 214 times [2020-11-12 09:50:33,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:33,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811426437] [2020-11-12 09:50:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:35,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811426437] [2020-11-12 09:50:35,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522676835] [2020-11-12 09:50:35,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:35,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:50:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:35,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:50:35,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:35,283 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:35,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:35,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:35,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:35,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764525811] [2020-11-12 09:50:35,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:35,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:35,423 INFO L87 Difference]: Start difference. First operand 1328 states and 1721 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:39,166 INFO L93 Difference]: Finished difference Result 2140 states and 2621 transitions. [2020-11-12 09:50:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:50:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:39,168 INFO L225 Difference]: With dead ends: 2140 [2020-11-12 09:50:39,168 INFO L226 Difference]: Without dead ends: 1898 [2020-11-12 09:50:39,168 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1646, Invalid=5326, Unknown=0, NotChecked=0, Total=6972 [2020-11-12 09:50:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-11-12 09:50:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1342. [2020-11-12 09:50:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1278 states have (on average 1.3607198748043818) internal successors, (1739), 1341 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1739 transitions. [2020-11-12 09:50:39,181 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1739 transitions. Word has length 171 [2020-11-12 09:50:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:39,181 INFO L481 AbstractCegarLoop]: Abstraction has 1342 states and 1739 transitions. [2020-11-12 09:50:39,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1739 transitions. [2020-11-12 09:50:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:39,182 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:39,182 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:39,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2020-11-12 09:50:39,383 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:39,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1672808597, now seen corresponding path program 215 times [2020-11-12 09:50:39,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:39,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642491148] [2020-11-12 09:50:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:40,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642491148] [2020-11-12 09:50:40,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068315096] [2020-11-12 09:50:40,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:40,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:50:40,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:40,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:40,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:40,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:40,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:40,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:40,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:40,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158505353] [2020-11-12 09:50:40,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:40,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:40,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:40,851 INFO L87 Difference]: Start difference. First operand 1342 states and 1739 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:44,998 INFO L93 Difference]: Finished difference Result 2141 states and 2623 transitions. [2020-11-12 09:50:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:50:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:45,000 INFO L225 Difference]: With dead ends: 2141 [2020-11-12 09:50:45,000 INFO L226 Difference]: Without dead ends: 1899 [2020-11-12 09:50:45,001 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1753, Invalid=5557, Unknown=0, NotChecked=0, Total=7310 [2020-11-12 09:50:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-11-12 09:50:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1356. [2020-11-12 09:50:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1292 states have (on average 1.359907120743034) internal successors, (1757), 1355 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1757 transitions. [2020-11-12 09:50:45,013 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1757 transitions. Word has length 171 [2020-11-12 09:50:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:45,013 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1757 transitions. [2020-11-12 09:50:45,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1757 transitions. [2020-11-12 09:50:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:45,014 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:45,015 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:45,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-11-12 09:50:45,215 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1832755029, now seen corresponding path program 216 times [2020-11-12 09:50:45,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:45,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849764647] [2020-11-12 09:50:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:46,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849764647] [2020-11-12 09:50:46,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090909986] [2020-11-12 09:50:46,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:46,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-12 09:50:46,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:46,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:46,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:46,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:46,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:46,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:46,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:46,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784768108] [2020-11-12 09:50:46,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:46,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:46,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:46,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:46,653 INFO L87 Difference]: Start difference. First operand 1356 states and 1757 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:50,691 INFO L93 Difference]: Finished difference Result 2142 states and 2625 transitions. [2020-11-12 09:50:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:50:50,691 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:50,693 INFO L225 Difference]: With dead ends: 2142 [2020-11-12 09:50:50,693 INFO L226 Difference]: Without dead ends: 1900 [2020-11-12 09:50:50,693 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1876, Invalid=5780, Unknown=0, NotChecked=0, Total=7656 [2020-11-12 09:50:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-11-12 09:50:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1370. [2020-11-12 09:50:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1306 states have (on average 1.3591117917304747) internal successors, (1775), 1369 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1775 transitions. [2020-11-12 09:50:50,706 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1775 transitions. Word has length 171 [2020-11-12 09:50:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:50,706 INFO L481 AbstractCegarLoop]: Abstraction has 1370 states and 1775 transitions. [2020-11-12 09:50:50,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1775 transitions. [2020-11-12 09:50:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:50,707 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:50,708 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:50,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-11-12 09:50:50,909 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash 764388885, now seen corresponding path program 217 times [2020-11-12 09:50:50,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:50,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059877925] [2020-11-12 09:50:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:52,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059877925] [2020-11-12 09:50:52,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677777501] [2020-11-12 09:50:52,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:52,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:52,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:52,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:52,314 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:52,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:52,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:52,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683266128] [2020-11-12 09:50:52,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:52,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:52,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:52,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:52,344 INFO L87 Difference]: Start difference. First operand 1370 states and 1775 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:50:56,643 INFO L93 Difference]: Finished difference Result 2143 states and 2627 transitions. [2020-11-12 09:50:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 09:50:56,643 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:50:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:50:56,645 INFO L225 Difference]: With dead ends: 2143 [2020-11-12 09:50:56,645 INFO L226 Difference]: Without dead ends: 1901 [2020-11-12 09:50:56,645 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2015, Invalid=5995, Unknown=0, NotChecked=0, Total=8010 [2020-11-12 09:50:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2020-11-12 09:50:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1384. [2020-11-12 09:50:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1320 states have (on average 1.3583333333333334) internal successors, (1793), 1383 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1793 transitions. [2020-11-12 09:50:56,658 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1793 transitions. Word has length 171 [2020-11-12 09:50:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:50:56,658 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1793 transitions. [2020-11-12 09:50:56,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:50:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1793 transitions. [2020-11-12 09:50:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:50:56,659 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:50:56,659 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:50:56,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:56,860 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:50:56,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:50:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1555504341, now seen corresponding path program 218 times [2020-11-12 09:50:56,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:50:56,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968442515] [2020-11-12 09:50:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:50:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:50:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:57,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968442515] [2020-11-12 09:50:57,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339337944] [2020-11-12 09:50:57,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:50:58,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:50:58,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:50:58,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:50:58,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:50:58,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:50:58,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:50:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:50:58,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:50:58,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:50:58,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347871964] [2020-11-12 09:50:58,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:50:58,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:50:58,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:50:58,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:50:58,342 INFO L87 Difference]: Start difference. First operand 1384 states and 1793 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:02,909 INFO L93 Difference]: Finished difference Result 2144 states and 2629 transitions. [2020-11-12 09:51:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:51:02,910 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:51:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:02,911 INFO L225 Difference]: With dead ends: 2144 [2020-11-12 09:51:02,911 INFO L226 Difference]: Without dead ends: 1902 [2020-11-12 09:51:02,912 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2170, Invalid=6202, Unknown=0, NotChecked=0, Total=8372 [2020-11-12 09:51:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-11-12 09:51:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1398. [2020-11-12 09:51:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1334 states have (on average 1.3575712143928036) internal successors, (1811), 1397 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1811 transitions. [2020-11-12 09:51:02,925 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1811 transitions. Word has length 171 [2020-11-12 09:51:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:02,925 INFO L481 AbstractCegarLoop]: Abstraction has 1398 states and 1811 transitions. [2020-11-12 09:51:02,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1811 transitions. [2020-11-12 09:51:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:51:02,926 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:02,926 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:03,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-11-12 09:51:03,127 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash 297796501, now seen corresponding path program 219 times [2020-11-12 09:51:03,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:03,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597049643] [2020-11-12 09:51:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:04,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597049643] [2020-11-12 09:51:04,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55868174] [2020-11-12 09:51:04,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:04,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:51:04,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:04,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:51:04,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:04,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:04,602 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:04,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:04,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:51:04,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660096948] [2020-11-12 09:51:04,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:51:04,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:51:04,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:51:04,630 INFO L87 Difference]: Start difference. First operand 1398 states and 1811 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:09,416 INFO L93 Difference]: Finished difference Result 2145 states and 2631 transitions. [2020-11-12 09:51:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-12 09:51:09,416 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:51:09,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:09,418 INFO L225 Difference]: With dead ends: 2145 [2020-11-12 09:51:09,418 INFO L226 Difference]: Without dead ends: 1903 [2020-11-12 09:51:09,418 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2341, Invalid=6401, Unknown=0, NotChecked=0, Total=8742 [2020-11-12 09:51:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-11-12 09:51:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1412. [2020-11-12 09:51:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1348 states have (on average 1.3568249258160237) internal successors, (1829), 1411 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1829 transitions. [2020-11-12 09:51:09,432 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1829 transitions. Word has length 171 [2020-11-12 09:51:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:09,432 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 1829 transitions. [2020-11-12 09:51:09,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1829 transitions. [2020-11-12 09:51:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:51:09,433 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:09,434 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:09,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:09,634 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -76432811, now seen corresponding path program 220 times [2020-11-12 09:51:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:09,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041031716] [2020-11-12 09:51:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:10,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041031716] [2020-11-12 09:51:10,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421900605] [2020-11-12 09:51:10,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:10,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:51:10,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:10,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:51:10,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:10,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:11,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 4 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:11,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:11,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-11-12 09:51:11,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743401883] [2020-11-12 09:51:11,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:51:11,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:51:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:51:11,081 INFO L87 Difference]: Start difference. First operand 1412 states and 1829 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:16,039 INFO L93 Difference]: Finished difference Result 2149 states and 2643 transitions. [2020-11-12 09:51:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-11-12 09:51:16,039 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:51:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:16,040 INFO L225 Difference]: With dead ends: 2149 [2020-11-12 09:51:16,040 INFO L226 Difference]: Without dead ends: 1935 [2020-11-12 09:51:16,041 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2528, Invalid=6592, Unknown=0, NotChecked=0, Total=9120 [2020-11-12 09:51:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-11-12 09:51:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1426. [2020-11-12 09:51:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1362 states have (on average 1.3597650513950073) internal successors, (1852), 1425 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1852 transitions. [2020-11-12 09:51:16,055 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1852 transitions. Word has length 171 [2020-11-12 09:51:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:16,056 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 1852 transitions. [2020-11-12 09:51:16,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1852 transitions. [2020-11-12 09:51:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-12 09:51:16,057 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:16,057 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:16,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2020-11-12 09:51:16,258 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1920264405, now seen corresponding path program 221 times [2020-11-12 09:51:16,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:16,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981243626] [2020-11-12 09:51:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:17,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981243626] [2020-11-12 09:51:17,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997380675] [2020-11-12 09:51:17,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:17,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-11-12 09:51:17,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-12 09:51:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:17,576 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:17,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:17,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:17,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2020-11-12 09:51:17,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954250043] [2020-11-12 09:51:17,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-12 09:51:17,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:17,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-12 09:51:17,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2020-11-12 09:51:17,650 INFO L87 Difference]: Start difference. First operand 1426 states and 1852 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:22,642 INFO L93 Difference]: Finished difference Result 2454 states and 3022 transitions. [2020-11-12 09:51:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-12 09:51:22,644 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2020-11-12 09:51:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:22,646 INFO L225 Difference]: With dead ends: 2454 [2020-11-12 09:51:22,646 INFO L226 Difference]: Without dead ends: 1918 [2020-11-12 09:51:22,647 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2698, Invalid=6614, Unknown=0, NotChecked=0, Total=9312 [2020-11-12 09:51:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-11-12 09:51:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1242. [2020-11-12 09:51:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1178 states have (on average 1.366723259762309) internal successors, (1610), 1241 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1610 transitions. [2020-11-12 09:51:22,658 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1610 transitions. Word has length 171 [2020-11-12 09:51:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:22,658 INFO L481 AbstractCegarLoop]: Abstraction has 1242 states and 1610 transitions. [2020-11-12 09:51:22,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1610 transitions. [2020-11-12 09:51:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:22,659 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:22,659 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:22,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:22,860 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:22,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1779108693, now seen corresponding path program 222 times [2020-11-12 09:51:22,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:22,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006181833] [2020-11-12 09:51:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:24,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006181833] [2020-11-12 09:51:24,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258003639] [2020-11-12 09:51:24,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:24,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 09:51:24,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:24,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:51:24,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:24,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:24,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:24,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:24,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 39 [2020-11-12 09:51:24,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905947724] [2020-11-12 09:51:24,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-12 09:51:24,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:24,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-12 09:51:24,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1146, Unknown=0, NotChecked=0, Total=1482 [2020-11-12 09:51:24,708 INFO L87 Difference]: Start difference. First operand 1242 states and 1610 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:27,322 INFO L93 Difference]: Finished difference Result 2151 states and 2627 transitions. [2020-11-12 09:51:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-12 09:51:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:27,326 INFO L225 Difference]: With dead ends: 2151 [2020-11-12 09:51:27,326 INFO L226 Difference]: Without dead ends: 1909 [2020-11-12 09:51:27,326 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1532, Invalid=3870, Unknown=0, NotChecked=0, Total=5402 [2020-11-12 09:51:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-11-12 09:51:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1252. [2020-11-12 09:51:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1188 states have (on average 1.3653198653198653) internal successors, (1622), 1251 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1622 transitions. [2020-11-12 09:51:27,338 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1622 transitions. Word has length 176 [2020-11-12 09:51:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:27,338 INFO L481 AbstractCegarLoop]: Abstraction has 1252 states and 1622 transitions. [2020-11-12 09:51:27,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1622 transitions. [2020-11-12 09:51:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:27,339 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:27,339 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:27,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229 [2020-11-12 09:51:27,540 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:27,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1060089067, now seen corresponding path program 223 times [2020-11-12 09:51:27,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:27,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662801330] [2020-11-12 09:51:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:29,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662801330] [2020-11-12 09:51:29,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745560638] [2020-11-12 09:51:29,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:29,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:51:29,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:29,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:29,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 1 proven. 965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:29,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:29,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:51:29,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424499286] [2020-11-12 09:51:29,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:51:29,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:29,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:51:29,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:51:29,455 INFO L87 Difference]: Start difference. First operand 1252 states and 1622 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:32,046 INFO L93 Difference]: Finished difference Result 2176 states and 2657 transitions. [2020-11-12 09:51:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-12 09:51:32,048 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:32,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:32,050 INFO L225 Difference]: With dead ends: 2176 [2020-11-12 09:51:32,050 INFO L226 Difference]: Without dead ends: 1934 [2020-11-12 09:51:32,051 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1424, Invalid=3832, Unknown=0, NotChecked=0, Total=5256 [2020-11-12 09:51:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-11-12 09:51:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1275. [2020-11-12 09:51:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1211 states have (on average 1.3633360858794386) internal successors, (1651), 1274 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1651 transitions. [2020-11-12 09:51:32,063 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1651 transitions. Word has length 176 [2020-11-12 09:51:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:32,063 INFO L481 AbstractCegarLoop]: Abstraction has 1275 states and 1651 transitions. [2020-11-12 09:51:32,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1651 transitions. [2020-11-12 09:51:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:32,064 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:32,064 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:32,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:32,265 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:32,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1813824427, now seen corresponding path program 224 times [2020-11-12 09:51:32,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:32,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402969899] [2020-11-12 09:51:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:33,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402969899] [2020-11-12 09:51:33,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323942978] [2020-11-12 09:51:33,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:34,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:51:34,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:34,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:51:34,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:34,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:34,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:34,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:34,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:51:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822850443] [2020-11-12 09:51:34,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:51:34,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:34,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:51:34,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:51:34,284 INFO L87 Difference]: Start difference. First operand 1275 states and 1651 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:37,192 INFO L93 Difference]: Finished difference Result 2177 states and 2659 transitions. [2020-11-12 09:51:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:51:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:37,194 INFO L225 Difference]: With dead ends: 2177 [2020-11-12 09:51:37,194 INFO L226 Difference]: Without dead ends: 1935 [2020-11-12 09:51:37,195 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1426, Invalid=4124, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 09:51:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-11-12 09:51:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1289. [2020-11-12 09:51:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1225 states have (on average 1.3624489795918366) internal successors, (1669), 1288 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1669 transitions. [2020-11-12 09:51:37,210 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1669 transitions. Word has length 176 [2020-11-12 09:51:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:37,211 INFO L481 AbstractCegarLoop]: Abstraction has 1289 states and 1669 transitions. [2020-11-12 09:51:37,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1669 transitions. [2020-11-12 09:51:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:37,212 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:37,212 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:37,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:37,412 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:37,413 INFO L82 PathProgramCache]: Analyzing trace with hash -344765845, now seen corresponding path program 225 times [2020-11-12 09:51:37,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:37,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847728247] [2020-11-12 09:51:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:38,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847728247] [2020-11-12 09:51:38,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698555461] [2020-11-12 09:51:38,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:39,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-12 09:51:39,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:39,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:51:39,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:39,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:39,208 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:39,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:39,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:51:39,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133073099] [2020-11-12 09:51:39,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:51:39,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:51:39,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:51:39,252 INFO L87 Difference]: Start difference. First operand 1289 states and 1669 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:42,318 INFO L93 Difference]: Finished difference Result 2169 states and 2651 transitions. [2020-11-12 09:51:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:51:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:42,320 INFO L225 Difference]: With dead ends: 2169 [2020-11-12 09:51:42,320 INFO L226 Difference]: Without dead ends: 1927 [2020-11-12 09:51:42,320 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1444, Invalid=4408, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 09:51:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-11-12 09:51:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1303. [2020-11-12 09:51:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1239 states have (on average 1.3615819209039548) internal successors, (1687), 1302 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1687 transitions. [2020-11-12 09:51:42,332 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1687 transitions. Word has length 176 [2020-11-12 09:51:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:42,333 INFO L481 AbstractCegarLoop]: Abstraction has 1303 states and 1687 transitions. [2020-11-12 09:51:42,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1687 transitions. [2020-11-12 09:51:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:42,334 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:42,334 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:42,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-11-12 09:51:42,548 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:42,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:42,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2101297451, now seen corresponding path program 226 times [2020-11-12 09:51:42,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:42,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557636556] [2020-11-12 09:51:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:44,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557636556] [2020-11-12 09:51:44,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409903457] [2020-11-12 09:51:44,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:44,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:51:44,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:44,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-12 09:51:44,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:44,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:44,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:44,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:44,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:51:44,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878873728] [2020-11-12 09:51:44,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:51:44,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:44,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:51:44,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:51:44,339 INFO L87 Difference]: Start difference. First operand 1303 states and 1687 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:47,712 INFO L93 Difference]: Finished difference Result 2161 states and 2643 transitions. [2020-11-12 09:51:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:51:47,713 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:47,715 INFO L225 Difference]: With dead ends: 2161 [2020-11-12 09:51:47,715 INFO L226 Difference]: Without dead ends: 1919 [2020-11-12 09:51:47,715 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1478, Invalid=4684, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:51:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2020-11-12 09:51:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1317. [2020-11-12 09:51:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1253 states have (on average 1.36073423782921) internal successors, (1705), 1316 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1705 transitions. [2020-11-12 09:51:47,728 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1705 transitions. Word has length 176 [2020-11-12 09:51:47,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:47,728 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1705 transitions. [2020-11-12 09:51:47,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1705 transitions. [2020-11-12 09:51:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:47,729 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:47,729 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:47,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-11-12 09:51:47,930 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:47,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1082959851, now seen corresponding path program 227 times [2020-11-12 09:51:47,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:47,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721065865] [2020-11-12 09:51:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:49,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721065865] [2020-11-12 09:51:49,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134424349] [2020-11-12 09:51:49,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:49,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-11-12 09:51:49,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:49,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:51:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:49,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:49,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:49,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:49,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:51:49,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024337084] [2020-11-12 09:51:49,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:51:49,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:49,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:51:49,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:51:49,692 INFO L87 Difference]: Start difference. First operand 1317 states and 1705 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:53,325 INFO L93 Difference]: Finished difference Result 2153 states and 2635 transitions. [2020-11-12 09:51:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:51:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:53,327 INFO L225 Difference]: With dead ends: 2153 [2020-11-12 09:51:53,327 INFO L226 Difference]: Without dead ends: 1911 [2020-11-12 09:51:53,328 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1528, Invalid=4952, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 09:51:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-11-12 09:51:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1331. [2020-11-12 09:51:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1267 states have (on average 1.3599052880820837) internal successors, (1723), 1330 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1723 transitions. [2020-11-12 09:51:53,340 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1723 transitions. Word has length 176 [2020-11-12 09:51:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:53,340 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 1723 transitions. [2020-11-12 09:51:53,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1723 transitions. [2020-11-12 09:51:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:53,341 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:53,342 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:53,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-11-12 09:51:53,543 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1936162475, now seen corresponding path program 228 times [2020-11-12 09:51:53,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:53,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132317688] [2020-11-12 09:51:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:51:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:55,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132317688] [2020-11-12 09:51:55,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474211098] [2020-11-12 09:51:55,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:51:55,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 09:51:55,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:51:55,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:51:55,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:51:55,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:51:55,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:51:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:51:55,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:51:55,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:51:55,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400859575] [2020-11-12 09:51:55,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:51:55,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:51:55,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:51:55,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:51:55,379 INFO L87 Difference]: Start difference. First operand 1331 states and 1723 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:51:59,275 INFO L93 Difference]: Finished difference Result 2145 states and 2627 transitions. [2020-11-12 09:51:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:51:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:51:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:51:59,276 INFO L225 Difference]: With dead ends: 2145 [2020-11-12 09:51:59,277 INFO L226 Difference]: Without dead ends: 1903 [2020-11-12 09:51:59,277 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1594, Invalid=5212, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 09:51:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-11-12 09:51:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1345. [2020-11-12 09:51:59,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1281 states have (on average 1.3590944574551131) internal successors, (1741), 1344 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1741 transitions. [2020-11-12 09:51:59,289 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1741 transitions. Word has length 176 [2020-11-12 09:51:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:51:59,289 INFO L481 AbstractCegarLoop]: Abstraction has 1345 states and 1741 transitions. [2020-11-12 09:51:59,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:51:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1741 transitions. [2020-11-12 09:51:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:51:59,290 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:51:59,290 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:51:59,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-11-12 09:51:59,491 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:51:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:51:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash 853263723, now seen corresponding path program 229 times [2020-11-12 09:51:59,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:51:59,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255521474] [2020-11-12 09:51:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:51:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:00,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255521474] [2020-11-12 09:52:00,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236025301] [2020-11-12 09:52:00,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:00,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:00,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:01,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:01,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:01,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:01,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:01,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607134600] [2020-11-12 09:52:01,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:01,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:01,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:01,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:01,193 INFO L87 Difference]: Start difference. First operand 1345 states and 1741 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:05,345 INFO L93 Difference]: Finished difference Result 2137 states and 2619 transitions. [2020-11-12 09:52:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:52:05,345 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:05,347 INFO L225 Difference]: With dead ends: 2137 [2020-11-12 09:52:05,347 INFO L226 Difference]: Without dead ends: 1895 [2020-11-12 09:52:05,348 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1676, Invalid=5464, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 09:52:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-11-12 09:52:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1359. [2020-11-12 09:52:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1295 states have (on average 1.3583011583011584) internal successors, (1759), 1358 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1759 transitions. [2020-11-12 09:52:05,360 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1759 transitions. Word has length 176 [2020-11-12 09:52:05,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:05,360 INFO L481 AbstractCegarLoop]: Abstraction has 1359 states and 1759 transitions. [2020-11-12 09:52:05,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1759 transitions. [2020-11-12 09:52:05,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:05,361 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:05,361 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:05,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2020-11-12 09:52:05,562 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash 989166635, now seen corresponding path program 230 times [2020-11-12 09:52:05,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:05,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815858003] [2020-11-12 09:52:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815858003] [2020-11-12 09:52:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352710624] [2020-11-12 09:52:06,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:07,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:52:07,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:07,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:07,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:07,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:07,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:07,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:07,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:07,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385432276] [2020-11-12 09:52:07,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:07,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:07,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:07,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:07,238 INFO L87 Difference]: Start difference. First operand 1359 states and 1759 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:11,625 INFO L93 Difference]: Finished difference Result 2129 states and 2611 transitions. [2020-11-12 09:52:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:52:11,625 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:11,627 INFO L225 Difference]: With dead ends: 2129 [2020-11-12 09:52:11,627 INFO L226 Difference]: Without dead ends: 1887 [2020-11-12 09:52:11,628 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1774, Invalid=5708, Unknown=0, NotChecked=0, Total=7482 [2020-11-12 09:52:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-11-12 09:52:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1373. [2020-11-12 09:52:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1309 states have (on average 1.3575248281130634) internal successors, (1777), 1372 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1777 transitions. [2020-11-12 09:52:11,653 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1777 transitions. Word has length 176 [2020-11-12 09:52:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:11,653 INFO L481 AbstractCegarLoop]: Abstraction has 1373 states and 1777 transitions. [2020-11-12 09:52:11,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1777 transitions. [2020-11-12 09:52:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:11,654 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:11,654 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:11,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:11,855 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1497324821, now seen corresponding path program 231 times [2020-11-12 09:52:11,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:11,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638156602] [2020-11-12 09:52:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:13,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638156602] [2020-11-12 09:52:13,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735174526] [2020-11-12 09:52:13,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:13,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-12 09:52:13,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:13,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:13,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:13,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:13,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:13,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:13,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018427345] [2020-11-12 09:52:13,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:13,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:13,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:13,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:13,506 INFO L87 Difference]: Start difference. First operand 1373 states and 1777 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:18,122 INFO L93 Difference]: Finished difference Result 2121 states and 2603 transitions. [2020-11-12 09:52:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:52:18,123 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:18,124 INFO L225 Difference]: With dead ends: 2121 [2020-11-12 09:52:18,124 INFO L226 Difference]: Without dead ends: 1879 [2020-11-12 09:52:18,125 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1893 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1888, Invalid=5944, Unknown=0, NotChecked=0, Total=7832 [2020-11-12 09:52:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-11-12 09:52:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1387. [2020-11-12 09:52:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1323 states have (on average 1.3567649281934997) internal successors, (1795), 1386 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1795 transitions. [2020-11-12 09:52:18,137 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1795 transitions. Word has length 176 [2020-11-12 09:52:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:18,137 INFO L481 AbstractCegarLoop]: Abstraction has 1387 states and 1795 transitions. [2020-11-12 09:52:18,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1795 transitions. [2020-11-12 09:52:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:18,138 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:18,138 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:18,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2020-11-12 09:52:18,339 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:18,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1337378389, now seen corresponding path program 232 times [2020-11-12 09:52:18,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:18,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840206745] [2020-11-12 09:52:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:19,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840206745] [2020-11-12 09:52:19,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515653639] [2020-11-12 09:52:19,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:19,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:52:19,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:19,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-12 09:52:19,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:19,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:19,947 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:19,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:19,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914990522] [2020-11-12 09:52:19,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:19,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:19,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:19,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:19,992 INFO L87 Difference]: Start difference. First operand 1387 states and 1795 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:24,892 INFO L93 Difference]: Finished difference Result 2113 states and 2595 transitions. [2020-11-12 09:52:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 09:52:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:24,893 INFO L225 Difference]: With dead ends: 2113 [2020-11-12 09:52:24,894 INFO L226 Difference]: Without dead ends: 1871 [2020-11-12 09:52:24,894 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2018, Invalid=6172, Unknown=0, NotChecked=0, Total=8190 [2020-11-12 09:52:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-11-12 09:52:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1401. [2020-11-12 09:52:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1337 states have (on average 1.356020942408377) internal successors, (1813), 1400 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1813 transitions. [2020-11-12 09:52:24,907 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1813 transitions. Word has length 176 [2020-11-12 09:52:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:24,907 INFO L481 AbstractCegarLoop]: Abstraction has 1401 states and 1813 transitions. [2020-11-12 09:52:24,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1813 transitions. [2020-11-12 09:52:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:24,908 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:24,908 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:25,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:25,109 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:25,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1889222763, now seen corresponding path program 233 times [2020-11-12 09:52:25,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:25,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123549614] [2020-11-12 09:52:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:26,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123549614] [2020-11-12 09:52:26,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733659566] [2020-11-12 09:52:26,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:26,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-11-12 09:52:26,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:26,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:26,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:26,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:26,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:26,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:26,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185165045] [2020-11-12 09:52:26,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:26,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:26,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:26,796 INFO L87 Difference]: Start difference. First operand 1401 states and 1813 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:31,968 INFO L93 Difference]: Finished difference Result 2105 states and 2587 transitions. [2020-11-12 09:52:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:52:31,968 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:31,970 INFO L225 Difference]: With dead ends: 2105 [2020-11-12 09:52:31,970 INFO L226 Difference]: Without dead ends: 1863 [2020-11-12 09:52:31,970 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2164, Invalid=6392, Unknown=0, NotChecked=0, Total=8556 [2020-11-12 09:52:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2020-11-12 09:52:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1415. [2020-11-12 09:52:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1351 states have (on average 1.3552923760177646) internal successors, (1831), 1414 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1831 transitions. [2020-11-12 09:52:31,984 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1831 transitions. Word has length 176 [2020-11-12 09:52:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:31,984 INFO L481 AbstractCegarLoop]: Abstraction has 1415 states and 1831 transitions. [2020-11-12 09:52:31,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1831 transitions. [2020-11-12 09:52:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:31,985 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:31,985 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:32,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:32,186 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:32,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1614629077, now seen corresponding path program 234 times [2020-11-12 09:52:32,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:32,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632125122] [2020-11-12 09:52:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:33,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632125122] [2020-11-12 09:52:33,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688293169] [2020-11-12 09:52:33,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:33,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 09:52:33,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:33,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:33,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:33,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:33,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:33,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:33,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:33,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63632745] [2020-11-12 09:52:33,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:33,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:33,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:33,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:33,863 INFO L87 Difference]: Start difference. First operand 1415 states and 1831 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:39,294 INFO L93 Difference]: Finished difference Result 2097 states and 2579 transitions. [2020-11-12 09:52:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-12 09:52:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:39,295 INFO L225 Difference]: With dead ends: 2097 [2020-11-12 09:52:39,296 INFO L226 Difference]: Without dead ends: 1855 [2020-11-12 09:52:39,296 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2326, Invalid=6604, Unknown=0, NotChecked=0, Total=8930 [2020-11-12 09:52:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2020-11-12 09:52:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1429. [2020-11-12 09:52:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1365 states have (on average 1.3545787545787547) internal successors, (1849), 1428 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1849 transitions. [2020-11-12 09:52:39,308 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1849 transitions. Word has length 176 [2020-11-12 09:52:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:39,309 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 1849 transitions. [2020-11-12 09:52:39,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1849 transitions. [2020-11-12 09:52:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:39,310 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:39,310 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:39,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:39,510 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:39,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:39,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1422630379, now seen corresponding path program 235 times [2020-11-12 09:52:39,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:39,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596242475] [2020-11-12 09:52:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:40,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596242475] [2020-11-12 09:52:40,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671872327] [2020-11-12 09:52:40,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:40,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:40,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:41,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:41,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:41,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:41,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:41,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738116592] [2020-11-12 09:52:41,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:41,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:41,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:41,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:41,163 INFO L87 Difference]: Start difference. First operand 1429 states and 1849 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:46,848 INFO L93 Difference]: Finished difference Result 2089 states and 2571 transitions. [2020-11-12 09:52:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-11-12 09:52:46,848 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:46,850 INFO L225 Difference]: With dead ends: 2089 [2020-11-12 09:52:46,850 INFO L226 Difference]: Without dead ends: 1847 [2020-11-12 09:52:46,851 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2461 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2504, Invalid=6808, Unknown=0, NotChecked=0, Total=9312 [2020-11-12 09:52:46,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2020-11-12 09:52:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1443. [2020-11-12 09:52:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1379 states have (on average 1.353879622915156) internal successors, (1867), 1442 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1867 transitions. [2020-11-12 09:52:46,864 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1867 transitions. Word has length 176 [2020-11-12 09:52:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:46,864 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1867 transitions. [2020-11-12 09:52:46,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1867 transitions. [2020-11-12 09:52:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:46,865 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:46,865 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:47,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,239 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:47,066 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1048401067, now seen corresponding path program 236 times [2020-11-12 09:52:47,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:47,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154034283] [2020-11-12 09:52:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:48,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154034283] [2020-11-12 09:52:48,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559768288] [2020-11-12 09:52:48,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:48,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:52:48,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:48,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:48,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:48,721 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 4 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:48,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:48,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-12 09:52:48,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45688245] [2020-11-12 09:52:48,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:52:48,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:52:48,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:52:48,748 INFO L87 Difference]: Start difference. First operand 1443 states and 1867 transitions. Second operand has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:52:54,758 INFO L93 Difference]: Finished difference Result 2094 states and 2585 transitions. [2020-11-12 09:52:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-11-12 09:52:54,758 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:52:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:52:54,760 INFO L225 Difference]: With dead ends: 2094 [2020-11-12 09:52:54,760 INFO L226 Difference]: Without dead ends: 1880 [2020-11-12 09:52:54,761 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2613 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2698, Invalid=7004, Unknown=0, NotChecked=0, Total=9702 [2020-11-12 09:52:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2020-11-12 09:52:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1457. [2020-11-12 09:52:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1393 states have (on average 1.35678391959799) internal successors, (1890), 1456 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1890 transitions. [2020-11-12 09:52:54,773 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1890 transitions. Word has length 176 [2020-11-12 09:52:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:52:54,773 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 1890 transitions. [2020-11-12 09:52:54,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.0) internal successors, (185), 37 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:52:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1890 transitions. [2020-11-12 09:52:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-12 09:52:54,774 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:52:54,774 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:52:54,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-11-12 09:52:54,975 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:52:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:52:54,976 INFO L82 PathProgramCache]: Analyzing trace with hash -795430527, now seen corresponding path program 237 times [2020-11-12 09:52:54,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:52:54,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276110016] [2020-11-12 09:52:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:52:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:52:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:56,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276110016] [2020-11-12 09:52:56,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646689242] [2020-11-12 09:52:56,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:52:56,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:52:56,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:52:56,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-12 09:52:56,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:52:56,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:52:56,538 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:52:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:52:56,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:52:56,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-11-12 09:52:56,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952490065] [2020-11-12 09:52:56,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-12 09:52:56,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:52:56,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-12 09:52:56,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2020-11-12 09:52:56,564 INFO L87 Difference]: Start difference. First operand 1457 states and 1890 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:02,602 INFO L93 Difference]: Finished difference Result 2390 states and 2954 transitions. [2020-11-12 09:53:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-11-12 09:53:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-11-12 09:53:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:02,608 INFO L225 Difference]: With dead ends: 2390 [2020-11-12 09:53:02,608 INFO L226 Difference]: Without dead ends: 1854 [2020-11-12 09:53:02,609 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2711 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2874, Invalid=7026, Unknown=0, NotChecked=0, Total=9900 [2020-11-12 09:53:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-11-12 09:53:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1275. [2020-11-12 09:53:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1211 states have (on average 1.3633360858794386) internal successors, (1651), 1274 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1651 transitions. [2020-11-12 09:53:02,620 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1651 transitions. Word has length 176 [2020-11-12 09:53:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:02,620 INFO L481 AbstractCegarLoop]: Abstraction has 1275 states and 1651 transitions. [2020-11-12 09:53:02,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1651 transitions. [2020-11-12 09:53:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:02,621 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:02,621 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:02,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2020-11-12 09:53:02,822 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash -343225792, now seen corresponding path program 238 times [2020-11-12 09:53:02,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:02,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363623811] [2020-11-12 09:53:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:04,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363623811] [2020-11-12 09:53:04,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725831464] [2020-11-12 09:53:04,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:04,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:53:04,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:04,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-12 09:53:04,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:04,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:04,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:04,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:04,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:04,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998442022] [2020-11-12 09:53:04,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:04,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:04,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:04,900 INFO L87 Difference]: Start difference. First operand 1275 states and 1651 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:07,981 INFO L93 Difference]: Finished difference Result 2207 states and 2695 transitions. [2020-11-12 09:53:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-12 09:53:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:07,983 INFO L225 Difference]: With dead ends: 2207 [2020-11-12 09:53:07,983 INFO L226 Difference]: Without dead ends: 1965 [2020-11-12 09:53:07,983 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1453, Invalid=4097, Unknown=0, NotChecked=0, Total=5550 [2020-11-12 09:53:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-11-12 09:53:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1289. [2020-11-12 09:53:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1225 states have (on average 1.3624489795918366) internal successors, (1669), 1288 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1669 transitions. [2020-11-12 09:53:07,996 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1669 transitions. Word has length 181 [2020-11-12 09:53:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:07,996 INFO L481 AbstractCegarLoop]: Abstraction has 1289 states and 1669 transitions. [2020-11-12 09:53:07,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1669 transitions. [2020-11-12 09:53:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:07,997 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:07,997 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:08,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-11-12 09:53:08,198 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:08,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash 410509568, now seen corresponding path program 239 times [2020-11-12 09:53:08,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:08,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304617947] [2020-11-12 09:53:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304617947] [2020-11-12 09:53:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130555864] [2020-11-12 09:53:09,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:10,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2020-11-12 09:53:10,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:10,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:10,136 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:10,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:10,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:10,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:10,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907243002] [2020-11-12 09:53:10,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:10,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:10,214 INFO L87 Difference]: Start difference. First operand 1289 states and 1669 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:13,567 INFO L93 Difference]: Finished difference Result 2208 states and 2697 transitions. [2020-11-12 09:53:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-12 09:53:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:13,569 INFO L225 Difference]: With dead ends: 2208 [2020-11-12 09:53:13,570 INFO L226 Difference]: Without dead ends: 1966 [2020-11-12 09:53:13,570 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1463, Invalid=4389, Unknown=0, NotChecked=0, Total=5852 [2020-11-12 09:53:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-11-12 09:53:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1303. [2020-11-12 09:53:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1239 states have (on average 1.3615819209039548) internal successors, (1687), 1302 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1687 transitions. [2020-11-12 09:53:13,583 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1687 transitions. Word has length 181 [2020-11-12 09:53:13,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:13,583 INFO L481 AbstractCegarLoop]: Abstraction has 1303 states and 1687 transitions. [2020-11-12 09:53:13,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1687 transitions. [2020-11-12 09:53:13,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:13,584 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:13,584 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:13,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-11-12 09:53:13,785 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1748080704, now seen corresponding path program 240 times [2020-11-12 09:53:13,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:13,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968307697] [2020-11-12 09:53:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:15,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968307697] [2020-11-12 09:53:15,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502202711] [2020-11-12 09:53:15,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:15,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 09:53:15,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:15,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:15,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:15,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:15,731 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:15,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:15,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:15,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413410623] [2020-11-12 09:53:15,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:15,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:15,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:15,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:15,780 INFO L87 Difference]: Start difference. First operand 1303 states and 1687 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:19,375 INFO L93 Difference]: Finished difference Result 2209 states and 2699 transitions. [2020-11-12 09:53:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-12 09:53:19,375 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:19,377 INFO L225 Difference]: With dead ends: 2209 [2020-11-12 09:53:19,377 INFO L226 Difference]: Without dead ends: 1967 [2020-11-12 09:53:19,378 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1489, Invalid=4673, Unknown=0, NotChecked=0, Total=6162 [2020-11-12 09:53:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-11-12 09:53:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1317. [2020-11-12 09:53:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1253 states have (on average 1.36073423782921) internal successors, (1705), 1316 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1705 transitions. [2020-11-12 09:53:19,390 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1705 transitions. Word has length 181 [2020-11-12 09:53:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:19,390 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1705 transitions. [2020-11-12 09:53:19,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1705 transitions. [2020-11-12 09:53:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:19,391 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:19,391 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:19,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:19,592 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash 697982592, now seen corresponding path program 241 times [2020-11-12 09:53:19,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:19,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264042945] [2020-11-12 09:53:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:21,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264042945] [2020-11-12 09:53:21,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305490132] [2020-11-12 09:53:21,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:21,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:21,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:21,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:21,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:21,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:21,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:21,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526157861] [2020-11-12 09:53:21,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:21,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:21,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:21,529 INFO L87 Difference]: Start difference. First operand 1317 states and 1705 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:25,390 INFO L93 Difference]: Finished difference Result 2210 states and 2701 transitions. [2020-11-12 09:53:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-12 09:53:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:25,391 INFO L225 Difference]: With dead ends: 2210 [2020-11-12 09:53:25,392 INFO L226 Difference]: Without dead ends: 1968 [2020-11-12 09:53:25,392 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1531, Invalid=4949, Unknown=0, NotChecked=0, Total=6480 [2020-11-12 09:53:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-11-12 09:53:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1331. [2020-11-12 09:53:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1267 states have (on average 1.3599052880820837) internal successors, (1723), 1330 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1723 transitions. [2020-11-12 09:53:25,404 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1723 transitions. Word has length 181 [2020-11-12 09:53:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:25,404 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 1723 transitions. [2020-11-12 09:53:25,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1723 transitions. [2020-11-12 09:53:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:25,405 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:25,405 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:25,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable248 [2020-11-12 09:53:25,606 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -320355008, now seen corresponding path program 242 times [2020-11-12 09:53:25,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:25,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298015541] [2020-11-12 09:53:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:27,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298015541] [2020-11-12 09:53:27,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074184899] [2020-11-12 09:53:27,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:27,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:53:27,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:27,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:27,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:27,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:27,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:27,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:27,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:27,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105877134] [2020-11-12 09:53:27,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:27,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:27,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:27,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:27,505 INFO L87 Difference]: Start difference. First operand 1331 states and 1723 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:31,667 INFO L93 Difference]: Finished difference Result 2211 states and 2703 transitions. [2020-11-12 09:53:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-12 09:53:31,667 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:31,669 INFO L225 Difference]: With dead ends: 2211 [2020-11-12 09:53:31,669 INFO L226 Difference]: Without dead ends: 1969 [2020-11-12 09:53:31,669 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1589, Invalid=5217, Unknown=0, NotChecked=0, Total=6806 [2020-11-12 09:53:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2020-11-12 09:53:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1345. [2020-11-12 09:53:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1281 states have (on average 1.3590944574551131) internal successors, (1741), 1344 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1741 transitions. [2020-11-12 09:53:31,685 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1741 transitions. Word has length 181 [2020-11-12 09:53:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:31,685 INFO L481 AbstractCegarLoop]: Abstraction has 1345 states and 1741 transitions. [2020-11-12 09:53:31,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1741 transitions. [2020-11-12 09:53:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:31,686 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:31,686 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:31,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:31,887 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash 532847616, now seen corresponding path program 243 times [2020-11-12 09:53:31,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:31,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207136427] [2020-11-12 09:53:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:33,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207136427] [2020-11-12 09:53:33,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881955965] [2020-11-12 09:53:33,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:33,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:53:33,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:33,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:33,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:33,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:33,757 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:33,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:33,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:33,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707253786] [2020-11-12 09:53:33,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:33,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:33,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:33,813 INFO L87 Difference]: Start difference. First operand 1345 states and 1741 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:38,244 INFO L93 Difference]: Finished difference Result 2212 states and 2705 transitions. [2020-11-12 09:53:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-12 09:53:38,244 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:38,246 INFO L225 Difference]: With dead ends: 2212 [2020-11-12 09:53:38,246 INFO L226 Difference]: Without dead ends: 1970 [2020-11-12 09:53:38,247 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1663, Invalid=5477, Unknown=0, NotChecked=0, Total=7140 [2020-11-12 09:53:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2020-11-12 09:53:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1359. [2020-11-12 09:53:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1295 states have (on average 1.3583011583011584) internal successors, (1759), 1358 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1759 transitions. [2020-11-12 09:53:38,260 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1759 transitions. Word has length 181 [2020-11-12 09:53:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:38,260 INFO L481 AbstractCegarLoop]: Abstraction has 1359 states and 1759 transitions. [2020-11-12 09:53:38,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1759 transitions. [2020-11-12 09:53:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:38,261 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:38,261 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:38,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:38,462 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:38,463 INFO L82 PathProgramCache]: Analyzing trace with hash -550051136, now seen corresponding path program 244 times [2020-11-12 09:53:38,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:38,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916466800] [2020-11-12 09:53:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:40,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916466800] [2020-11-12 09:53:40,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330944053] [2020-11-12 09:53:40,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:40,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-12 09:53:40,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:40,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-12 09:53:40,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:40,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:40,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:40,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:40,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:40,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147342028] [2020-11-12 09:53:40,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:40,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:40,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:40,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:40,310 INFO L87 Difference]: Start difference. First operand 1359 states and 1759 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:45,019 INFO L93 Difference]: Finished difference Result 2213 states and 2707 transitions. [2020-11-12 09:53:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-12 09:53:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:45,020 INFO L225 Difference]: With dead ends: 2213 [2020-11-12 09:53:45,020 INFO L226 Difference]: Without dead ends: 1971 [2020-11-12 09:53:45,021 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1753, Invalid=5729, Unknown=0, NotChecked=0, Total=7482 [2020-11-12 09:53:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2020-11-12 09:53:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1373. [2020-11-12 09:53:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1309 states have (on average 1.3575248281130634) internal successors, (1777), 1372 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1777 transitions. [2020-11-12 09:53:45,034 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1777 transitions. Word has length 181 [2020-11-12 09:53:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:45,034 INFO L481 AbstractCegarLoop]: Abstraction has 1373 states and 1777 transitions. [2020-11-12 09:53:45,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1777 transitions. [2020-11-12 09:53:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:45,035 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:45,035 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:45,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:45,236 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:45,237 INFO L82 PathProgramCache]: Analyzing trace with hash -414148224, now seen corresponding path program 245 times [2020-11-12 09:53:45,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:45,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729412930] [2020-11-12 09:53:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:46,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729412930] [2020-11-12 09:53:46,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228906088] [2020-11-12 09:53:46,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:46,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-11-12 09:53:46,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:46,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:46,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:46,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:47,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:47,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:47,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:47,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797531004] [2020-11-12 09:53:47,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:47,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:47,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:47,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:47,052 INFO L87 Difference]: Start difference. First operand 1373 states and 1777 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:52,046 INFO L93 Difference]: Finished difference Result 2214 states and 2709 transitions. [2020-11-12 09:53:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-12 09:53:52,046 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:52,048 INFO L225 Difference]: With dead ends: 2214 [2020-11-12 09:53:52,048 INFO L226 Difference]: Without dead ends: 1972 [2020-11-12 09:53:52,049 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1859, Invalid=5973, Unknown=0, NotChecked=0, Total=7832 [2020-11-12 09:53:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2020-11-12 09:53:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1387. [2020-11-12 09:53:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1323 states have (on average 1.3567649281934997) internal successors, (1795), 1386 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1795 transitions. [2020-11-12 09:53:52,061 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1795 transitions. Word has length 181 [2020-11-12 09:53:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:52,062 INFO L481 AbstractCegarLoop]: Abstraction has 1387 states and 1795 transitions. [2020-11-12 09:53:52,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1795 transitions. [2020-11-12 09:53:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:52,063 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:52,063 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:52,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:52,266 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:52,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1394327616, now seen corresponding path program 246 times [2020-11-12 09:53:52,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:52,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569580630] [2020-11-12 09:53:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:53:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:53,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569580630] [2020-11-12 09:53:53,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778630850] [2020-11-12 09:53:53,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:53,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-11-12 09:53:53,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:53:53,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:53:53,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:53:54,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:53:54,052 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:53:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:53:54,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:53:54,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:53:54,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62443238] [2020-11-12 09:53:54,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:53:54,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:53:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:53:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:53:54,088 INFO L87 Difference]: Start difference. First operand 1387 states and 1795 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:53:59,337 INFO L93 Difference]: Finished difference Result 2215 states and 2711 transitions. [2020-11-12 09:53:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-12 09:53:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:53:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:53:59,338 INFO L225 Difference]: With dead ends: 2215 [2020-11-12 09:53:59,338 INFO L226 Difference]: Without dead ends: 1973 [2020-11-12 09:53:59,339 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1981, Invalid=6209, Unknown=0, NotChecked=0, Total=8190 [2020-11-12 09:53:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2020-11-12 09:53:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1401. [2020-11-12 09:53:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1337 states have (on average 1.356020942408377) internal successors, (1813), 1400 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1813 transitions. [2020-11-12 09:53:59,352 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1813 transitions. Word has length 181 [2020-11-12 09:53:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:53:59,352 INFO L481 AbstractCegarLoop]: Abstraction has 1401 states and 1813 transitions. [2020-11-12 09:53:59,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:53:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1813 transitions. [2020-11-12 09:53:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:53:59,354 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:53:59,354 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:53:59,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,250 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:53:59,554 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:53:59,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:53:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1554274048, now seen corresponding path program 247 times [2020-11-12 09:53:59,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:53:59,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863547103] [2020-11-12 09:53:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:53:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:54:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:54:01,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863547103] [2020-11-12 09:54:01,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944035286] [2020-11-12 09:54:01,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:54:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:54:01,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:54:01,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:54:01,247 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:54:01,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:54:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:54:01,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:54:01,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:54:01,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748623575] [2020-11-12 09:54:01,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:54:01,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:54:01,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:54:01,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:54:01,343 INFO L87 Difference]: Start difference. First operand 1401 states and 1813 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:54:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:54:06,844 INFO L93 Difference]: Finished difference Result 2216 states and 2713 transitions. [2020-11-12 09:54:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:54:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:54:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:54:06,846 INFO L225 Difference]: With dead ends: 2216 [2020-11-12 09:54:06,846 INFO L226 Difference]: Without dead ends: 1974 [2020-11-12 09:54:06,847 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-11-12 09:54:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-11-12 09:54:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1415. [2020-11-12 09:54:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1351 states have (on average 1.3552923760177646) internal successors, (1831), 1414 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:54:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1831 transitions. [2020-11-12 09:54:06,861 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1831 transitions. Word has length 181 [2020-11-12 09:54:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:54:06,861 INFO L481 AbstractCegarLoop]: Abstraction has 1415 states and 1831 transitions. [2020-11-12 09:54:06,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:54:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1831 transitions. [2020-11-12 09:54:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:54:06,863 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:54:06,863 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:54:07,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2020-11-12 09:54:07,078 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:54:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:54:07,079 INFO L82 PathProgramCache]: Analyzing trace with hash 485907904, now seen corresponding path program 248 times [2020-11-12 09:54:07,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:54:07,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465429010] [2020-11-12 09:54:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:54:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:54:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:54:08,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465429010] [2020-11-12 09:54:08,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274218077] [2020-11-12 09:54:08,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:54:08,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-12 09:54:08,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:54:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:54:08,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:54:08,780 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:54:08,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:54:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:54:08,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:54:08,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:54:08,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561749299] [2020-11-12 09:54:08,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:54:08,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:54:08,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:54:08,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:54:08,864 INFO L87 Difference]: Start difference. First operand 1415 states and 1831 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:54:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:54:14,859 INFO L93 Difference]: Finished difference Result 2217 states and 2715 transitions. [2020-11-12 09:54:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-12 09:54:14,860 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-11-12 09:54:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:54:14,862 INFO L225 Difference]: With dead ends: 2217 [2020-11-12 09:54:14,862 INFO L226 Difference]: Without dead ends: 1975 [2020-11-12 09:54:14,864 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2388 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2273, Invalid=6657, Unknown=0, NotChecked=0, Total=8930 [2020-11-12 09:54:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-11-12 09:54:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1429. [2020-11-12 09:54:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1365 states have (on average 1.3545787545787547) internal successors, (1849), 1428 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:54:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1849 transitions. [2020-11-12 09:54:14,883 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1849 transitions. Word has length 181 [2020-11-12 09:54:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:54:14,884 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 1849 transitions. [2020-11-12 09:54:14,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:54:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1849 transitions. [2020-11-12 09:54:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-12 09:54:14,885 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:54:14,885 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:54:15,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-11-12 09:54:15,088 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:54:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:54:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1277023360, now seen corresponding path program 249 times [2020-11-12 09:54:15,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:54:15,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864262962] [2020-11-12 09:54:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:54:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:54:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:54:16,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864262962] [2020-11-12 09:54:16,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835225688] [2020-11-12 09:54:16,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 09:54:16,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-11-12 09:54:16,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-12 09:54:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-12 09:54:16,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 09:54:16,831 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-12 09:54:16,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 09:54:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 4 proven. 1034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:54:16,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 09:54:16,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-11-12 09:54:16,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344216386] [2020-11-12 09:54:16,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-12 09:54:16,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:54:16,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-12 09:54:16,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2020-11-12 09:54:16,930 INFO L87 Difference]: Start difference. First operand 1429 states and 1849 transitions. Second operand has 37 states, 37 states have (on average 5.081081081081081) internal successors, (188), 37 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2020-11-12 09:54:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-12 09:54:22,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-11-12 09:54:22,977 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-12 09:54:22,991 WARN L250 ceAbstractionStarter]: Timeout [2020-11-12 09:54:22,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 09:54:22 BasicIcfg [2020-11-12 09:54:22,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 09:54:22,993 INFO L168 Benchmark]: Toolchain (without parser) took 816937.25 ms. Allocated memory was 302.0 MB in the beginning and 700.4 MB in the end (delta: 398.5 MB). Free memory was 275.8 MB in the beginning and 663.8 MB in the end (delta: -388.0 MB). Peak memory consumption was 426.4 MB. Max. memory is 16.0 GB. [2020-11-12 09:54:22,994 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 09:54:22,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.90 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 275.7 MB in the end (delta: -526.4 kB). Peak memory consumption was 28.8 MB. Max. memory is 16.0 GB. [2020-11-12 09:54:22,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 274.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 09:54:22,995 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 272.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 09:54:22,995 INFO L168 Benchmark]: RCFGBuilder took 566.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 251.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 09:54:22,995 INFO L168 Benchmark]: TraceAbstraction took 815628.52 ms. Allocated memory was 302.0 MB in the beginning and 700.4 MB in the end (delta: 398.5 MB). Free memory was 251.5 MB in the beginning and 663.8 MB in the end (delta: -412.3 MB). Peak memory consumption was 399.7 MB. Max. memory is 16.0 GB. [2020-11-12 09:54:22,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 654.90 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 275.7 MB in the end (delta: -526.4 kB). Peak memory consumption was 28.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 274.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 272.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 566.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 251.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 815628.52 ms. Allocated memory was 302.0 MB in the beginning and 700.4 MB in the end (delta: 398.5 MB). Free memory was 251.5 MB in the beginning and 663.8 MB in the end (delta: -412.3 MB). Peak memory consumption was 399.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 685]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 685). Cancelled while BasicCegarLoop was constructing difference of abstraction (1429states) and FLOYD_HOARE automaton (currently 62 states, 37 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 94 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 815.4s, OverallIterations: 257, TraceHistogramMax: 16, AutomataDifference: 531.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 18325 SDtfs, 187285 SDslu, 207824 SDs, 0 SdLazy, 44435 SolverSat, 49871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48061 GetRequests, 32307 SyntacticMatches, 225 SemanticMatches, 15528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257440 ImplicationChecksByTransitivity, 588.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6412occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 256 MinimizatonAttempts, 105688 StatesRemovedByMinimization, 256 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.4s SsaConstructionTime, 12.7s SatisfiabilityAnalysisTime, 195.3s InterpolantComputationTime, 65562 NumberOfCodeBlocks, 65562 NumberOfCodeBlocksAsserted, 1769 NumberOfCheckSat, 65053 ConstructedInterpolants, 0 QuantifiedInterpolants, 40601339 SizeOfPredicates, 6036 NumberOfNonLiveVariables, 64008 ConjunctsInSsa, 6829 ConjunctsInUnsatCore, 509 InterpolantComputations, 5 PerfectInterpolantSequences, 791/251720 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown