/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.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 14:44:35,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 14:44:35,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 14:44:35,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 14:44:35,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 14:44:35,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 14:44:35,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 14:44:35,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 14:44:35,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 14:44:35,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 14:44:35,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 14:44:35,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 14:44:35,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 14:44:35,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 14:44:35,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 14:44:35,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 14:44:35,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 14:44:35,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 14:44:35,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 14:44:35,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 14:44:35,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 14:44:35,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 14:44:35,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 14:44:35,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 14:44:35,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 14:44:35,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 14:44:35,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 14:44:35,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 14:44:35,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 14:44:35,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 14:44:35,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 14:44:35,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 14:44:35,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 14:44:35,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 14:44:35,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 14:44:35,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 14:44:35,810 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.epf [2021-01-26 14:44:35,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 14:44:35,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 14:44:35,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 14:44:35,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 14:44:35,865 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 14:44:35,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 14:44:35,865 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 14:44:35,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 14:44:35,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 14:44:35,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 14:44:35,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 14:44:35,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 14:44:35,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 14:44:35,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 14:44:35,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 14:44:35,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 14:44:35,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 14:44:35,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 14:44:35,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 14:44:35,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 14:44:35,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 14:44:35,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 14:44:35,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 14:44:35,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 14:44:35,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 14:44:35,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 14:44:35,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 14:44:35,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 14:44:35,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 14:44:35,871 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 14:44:35,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 14:44:36,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 14:44:36,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 14:44:36,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 14:44:36,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 14:44:36,283 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 14:44:36,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2021-01-26 14:44:36,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d5b5212/91d80e3f0e714f1c9aedd10b29696f81/FLAGe8868e044 [2021-01-26 14:44:37,067 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 14:44:37,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2021-01-26 14:44:37,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d5b5212/91d80e3f0e714f1c9aedd10b29696f81/FLAGe8868e044 [2021-01-26 14:44:37,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d5b5212/91d80e3f0e714f1c9aedd10b29696f81 [2021-01-26 14:44:37,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 14:44:37,368 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 14:44:37,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 14:44:37,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 14:44:37,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 14:44:37,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 02:44:37" (1/1) ... [2021-01-26 14:44:37,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1c146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:37, skipping insertion in model container [2021-01-26 14:44:37,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 02:44:37" (1/1) ... [2021-01-26 14:44:37,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 14:44:37,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 14:44:37,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 14:44:37,887 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 14:44:37,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 14:44:38,072 INFO L208 MainTranslator]: Completed translation [2021-01-26 14:44:38,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38 WrapperNode [2021-01-26 14:44:38,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 14:44:38,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 14:44:38,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 14:44:38,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 14:44:38,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 14:44:38,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 14:44:38,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 14:44:38,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 14:44:38,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (1/1) ... [2021-01-26 14:44:38,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 14:44:38,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 14:44:38,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 14:44:38,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 14:44:38,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (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 [2021-01-26 14:44:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-01-26 14:44:38,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-01-26 14:44:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-01-26 14:44:38,245 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-01-26 14:44:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 14:44:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 14:44:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 14:44:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 14:44:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 14:44:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 14:44:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 14:44:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 14:44:38,247 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 14:44:38,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 14:44:38,669 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-26 14:44:38,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 02:44:38 BoogieIcfgContainer [2021-01-26 14:44:38,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 14:44:38,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 14:44:38,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 14:44:38,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 14:44:38,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 02:44:37" (1/3) ... [2021-01-26 14:44:38,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70207d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 02:44:38, skipping insertion in model container [2021-01-26 14:44:38,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:38" (2/3) ... [2021-01-26 14:44:38,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70207d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 02:44:38, skipping insertion in model container [2021-01-26 14:44:38,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 02:44:38" (3/3) ... [2021-01-26 14:44:38,679 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2021-01-26 14:44:38,694 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 14:44:38,694 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 14:44:38,698 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 14:44:38,699 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 14:44:38,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,734 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,734 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,735 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,735 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,735 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,735 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,736 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,736 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,736 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,736 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,736 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,737 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,737 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,737 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,737 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,737 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,738 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,738 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,738 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,738 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,739 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,739 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,740 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,740 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,740 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,740 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,741 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,741 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,741 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,741 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,741 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,742 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,742 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,742 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,742 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,743 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,743 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,745 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,745 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,745 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,745 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,745 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,746 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,755 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,755 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:38,759 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 14:44:38,772 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-26 14:44:38,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 14:44:38,796 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 14:44:38,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 14:44:38,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 14:44:38,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 14:44:38,796 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 14:44:38,796 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 14:44:38,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 14:44:38,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2021-01-26 14:44:38,935 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) [2021-01-26 14:44:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2021-01-26 14:44:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-26 14:44:38,961 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:38,962 INFO L504 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] [2021-01-26 14:44:38,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1900887756, now seen corresponding path program 1 times [2021-01-26 14:44:38,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:38,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774908164] [2021-01-26 14:44:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:39,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774908164] [2021-01-26 14:44:39,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:39,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 14:44:39,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865277847] [2021-01-26 14:44:39,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 14:44:39,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:39,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 14:44:39,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-26 14:44:39,512 INFO L87 Difference]: Start difference. First operand 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) 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) [2021-01-26 14:44:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:39,760 INFO L93 Difference]: Finished difference Result 3336 states and 9728 transitions. [2021-01-26 14:44:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-26 14:44:39,762 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 [2021-01-26 14:44:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:39,789 INFO L225 Difference]: With dead ends: 3336 [2021-01-26 14:44:39,790 INFO L226 Difference]: Without dead ends: 1320 [2021-01-26 14:44:39,791 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-26 14:44:39,791 INFO L78 Accepts]: Start accepts. Automaton has 1320 states. Word has length 28 [2021-01-26 14:44:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:39,793 INFO L481 AbstractCegarLoop]: Abstraction has 1320 states. [2021-01-26 14:44:39,793 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) [2021-01-26 14:44:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states. [2021-01-26 14:44:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-26 14:44:39,799 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:39,800 INFO L504 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] [2021-01-26 14:44:39,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 14:44:39,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1199752031, now seen corresponding path program 1 times [2021-01-26 14:44:39,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:39,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079099263] [2021-01-26 14:44:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:39,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079099263] [2021-01-26 14:44:39,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:39,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 14:44:39,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581884517] [2021-01-26 14:44:39,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 14:44:39,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:39,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 14:44:39,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-26 14:44:39,975 INFO L87 Difference]: Start difference. First operand 1320 states. 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) [2021-01-26 14:44:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:40,253 INFO L93 Difference]: Finished difference Result 2619 states and 7228 transitions. [2021-01-26 14:44:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 14:44:40,254 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 [2021-01-26 14:44:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:40,275 INFO L225 Difference]: With dead ends: 2619 [2021-01-26 14:44:40,275 INFO L226 Difference]: Without dead ends: 2363 [2021-01-26 14:44:40,277 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-26 14:44:40,277 INFO L78 Accepts]: Start accepts. Automaton has 2363 states. Word has length 32 [2021-01-26 14:44:40,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:40,278 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states. [2021-01-26 14:44:40,278 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) [2021-01-26 14:44:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states. [2021-01-26 14:44:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-26 14:44:40,281 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:40,282 INFO L504 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] [2021-01-26 14:44:40,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 14:44:40,282 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1202725261, now seen corresponding path program 2 times [2021-01-26 14:44:40,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:40,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193839956] [2021-01-26 14:44:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:40,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193839956] [2021-01-26 14:44:40,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:40,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 14:44:40,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19031706] [2021-01-26 14:44:40,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 14:44:40,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:40,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 14:44:40,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 14:44:40,489 INFO L87 Difference]: Start difference. First operand 2363 states. 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) [2021-01-26 14:44:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:40,675 INFO L93 Difference]: Finished difference Result 1883 states and 4981 transitions. [2021-01-26 14:44:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 14:44:40,676 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 [2021-01-26 14:44:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:40,690 INFO L225 Difference]: With dead ends: 1883 [2021-01-26 14:44:40,690 INFO L226 Difference]: Without dead ends: 1438 [2021-01-26 14:44:40,692 INFO L769 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 [2021-01-26 14:44:40,692 INFO L78 Accepts]: Start accepts. Automaton has 1438 states. Word has length 32 [2021-01-26 14:44:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:40,693 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states. [2021-01-26 14:44:40,693 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) [2021-01-26 14:44:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states. [2021-01-26 14:44:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-26 14:44:40,699 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:40,699 INFO L504 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] [2021-01-26 14:44:40,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 14:44:40,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1299742308, now seen corresponding path program 1 times [2021-01-26 14:44:40,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:40,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401646101] [2021-01-26 14:44:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:40,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401646101] [2021-01-26 14:44:40,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:40,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 14:44:40,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537787398] [2021-01-26 14:44:40,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 14:44:40,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:40,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 14:44:40,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 14:44:40,946 INFO L87 Difference]: Start difference. First operand 1438 states. 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) [2021-01-26 14:44:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:41,092 INFO L93 Difference]: Finished difference Result 2398 states and 6462 transitions. [2021-01-26 14:44:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 14:44:41,093 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 [2021-01-26 14:44:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:41,109 INFO L225 Difference]: With dead ends: 2398 [2021-01-26 14:44:41,109 INFO L226 Difference]: Without dead ends: 2119 [2021-01-26 14:44:41,110 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:41,110 INFO L78 Accepts]: Start accepts. Automaton has 2119 states. Word has length 36 [2021-01-26 14:44:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:41,110 INFO L481 AbstractCegarLoop]: Abstraction has 2119 states. [2021-01-26 14:44:41,111 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) [2021-01-26 14:44:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states. [2021-01-26 14:44:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-26 14:44:41,113 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:41,114 INFO L504 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] [2021-01-26 14:44:41,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 14:44:41,114 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:41,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1296769078, now seen corresponding path program 2 times [2021-01-26 14:44:41,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:41,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367754302] [2021-01-26 14:44:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:41,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367754302] [2021-01-26 14:44:41,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:41,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 14:44:41,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381381899] [2021-01-26 14:44:41,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 14:44:41,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:41,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 14:44:41,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 14:44:41,233 INFO L87 Difference]: Start difference. First operand 2119 states. 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) [2021-01-26 14:44:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:41,430 INFO L93 Difference]: Finished difference Result 1543 states and 3905 transitions. [2021-01-26 14:44:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 14:44:41,431 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 [2021-01-26 14:44:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:41,440 INFO L225 Difference]: With dead ends: 1543 [2021-01-26 14:44:41,440 INFO L226 Difference]: Without dead ends: 1079 [2021-01-26 14:44:41,441 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:41,441 INFO L78 Accepts]: Start accepts. Automaton has 1079 states. Word has length 36 [2021-01-26 14:44:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:41,441 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states. [2021-01-26 14:44:41,443 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) [2021-01-26 14:44:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states. [2021-01-26 14:44:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-26 14:44:41,445 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:41,445 INFO L504 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] [2021-01-26 14:44:41,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 14:44:41,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1841087432, now seen corresponding path program 3 times [2021-01-26 14:44:41,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:41,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022828706] [2021-01-26 14:44:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:41,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022828706] [2021-01-26 14:44:41,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:41,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 14:44:41,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402124166] [2021-01-26 14:44:41,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 14:44:41,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:41,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 14:44:41,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 14:44:41,587 INFO L87 Difference]: Start difference. First operand 1079 states. 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) [2021-01-26 14:44:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:41,844 INFO L93 Difference]: Finished difference Result 1399 states and 3609 transitions. [2021-01-26 14:44:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-26 14:44:41,844 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 [2021-01-26 14:44:41,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:41,852 INFO L225 Difference]: With dead ends: 1399 [2021-01-26 14:44:41,853 INFO L226 Difference]: Without dead ends: 1175 [2021-01-26 14:44:41,853 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:41,853 INFO L78 Accepts]: Start accepts. Automaton has 1175 states. Word has length 36 [2021-01-26 14:44:41,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:41,854 INFO L481 AbstractCegarLoop]: Abstraction has 1175 states. [2021-01-26 14:44:41,854 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) [2021-01-26 14:44:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states. [2021-01-26 14:44:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 14:44:41,857 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:41,857 INFO L504 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] [2021-01-26 14:44:41,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 14:44:41,858 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash -940103400, now seen corresponding path program 1 times [2021-01-26 14:44:41,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:41,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230366365] [2021-01-26 14:44:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:41,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230366365] [2021-01-26 14:44:41,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851085075] [2021-01-26 14:44:41,990 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 [2021-01-26 14:44:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-26 14:44:42,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:42,291 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:42,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:42,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:42,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-26 14:44:42,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670419336] [2021-01-26 14:44:42,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:42,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:42,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:42,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:42,337 INFO L87 Difference]: Start difference. First operand 1175 states. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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) [2021-01-26 14:44:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:42,627 INFO L93 Difference]: Finished difference Result 1879 states and 4893 transitions. [2021-01-26 14:44:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-26 14:44:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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 [2021-01-26 14:44:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:42,637 INFO L225 Difference]: With dead ends: 1879 [2021-01-26 14:44:42,637 INFO L226 Difference]: Without dead ends: 1455 [2021-01-26 14:44:42,638 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:44:42,638 INFO L78 Accepts]: Start accepts. Automaton has 1455 states. Word has length 41 [2021-01-26 14:44:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:42,639 INFO L481 AbstractCegarLoop]: Abstraction has 1455 states. [2021-01-26 14:44:42,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 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) [2021-01-26 14:44:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states. [2021-01-26 14:44:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 14:44:42,644 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:42,644 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-01-26 14:44:42,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-26 14:44:42,858 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:42,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1546743908, now seen corresponding path program 1 times [2021-01-26 14:44:42,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:42,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729509754] [2021-01-26 14:44:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729509754] [2021-01-26 14:44:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625115596] [2021-01-26 14:44:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-01-26 14:44:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:43,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-26 14:44:43,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:43,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:43,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:43,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-01-26 14:44:43,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760204065] [2021-01-26 14:44:43,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 14:44:43,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:43,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 14:44:43,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 14:44:43,092 INFO L87 Difference]: Start difference. First operand 1455 states. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:43,220 INFO L93 Difference]: Finished difference Result 1855 states and 4685 transitions. [2021-01-26 14:44:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 14:44:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2021-01-26 14:44:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:43,230 INFO L225 Difference]: With dead ends: 1855 [2021-01-26 14:44:43,230 INFO L226 Difference]: Without dead ends: 1570 [2021-01-26 14:44:43,231 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:43,231 INFO L78 Accepts]: Start accepts. Automaton has 1570 states. Word has length 46 [2021-01-26 14:44:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:43,231 INFO L481 AbstractCegarLoop]: Abstraction has 1570 states. [2021-01-26 14:44:43,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states. [2021-01-26 14:44:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 14:44:43,235 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:43,235 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-01-26 14:44:43,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:43,440 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:43,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:43,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1378232494, now seen corresponding path program 2 times [2021-01-26 14:44:43,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:43,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428276917] [2021-01-26 14:44:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:43,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428276917] [2021-01-26 14:44:43,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636433882] [2021-01-26 14:44:43,609 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 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 [2021-01-26 14:44:43,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:43,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:43,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-26 14:44:43,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:43,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:43,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:43,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:43,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-26 14:44:43,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320475189] [2021-01-26 14:44:43,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-26 14:44:43,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:43,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-26 14:44:43,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-26 14:44:43,766 INFO L87 Difference]: Start difference. First operand 1570 states. 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) [2021-01-26 14:44:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:43,987 INFO L93 Difference]: Finished difference Result 2010 states and 4995 transitions. [2021-01-26 14:44:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-26 14:44:43,988 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 46 [2021-01-26 14:44:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:43,999 INFO L225 Difference]: With dead ends: 2010 [2021-01-26 14:44:44,000 INFO L226 Difference]: Without dead ends: 1710 [2021-01-26 14:44:44,000 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:44:44,000 INFO L78 Accepts]: Start accepts. Automaton has 1710 states. Word has length 46 [2021-01-26 14:44:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:44,002 INFO L481 AbstractCegarLoop]: Abstraction has 1710 states. [2021-01-26 14:44:44,002 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) [2021-01-26 14:44:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states. [2021-01-26 14:44:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 14:44:44,008 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:44,009 INFO L504 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] [2021-01-26 14:44:44,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:44,223 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:44,224 INFO L82 PathProgramCache]: Analyzing trace with hash -443954361, now seen corresponding path program 1 times [2021-01-26 14:44:44,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:44,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131272528] [2021-01-26 14:44:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:44,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131272528] [2021-01-26 14:44:44,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163524401] [2021-01-26 14:44:44,342 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 [2021-01-26 14:44:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:44,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 14:44:44,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:44,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:44,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:44,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:44,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-26 14:44:44,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273809207] [2021-01-26 14:44:44,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:44,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:44,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:44,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:44,469 INFO L87 Difference]: Start difference. First operand 1710 states. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:44,826 INFO L93 Difference]: Finished difference Result 3040 states and 7712 transitions. [2021-01-26 14:44:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:44,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2021-01-26 14:44:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:44,855 INFO L225 Difference]: With dead ends: 3040 [2021-01-26 14:44:44,855 INFO L226 Difference]: Without dead ends: 2345 [2021-01-26 14:44:44,856 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:44:44,856 INFO L78 Accepts]: Start accepts. Automaton has 2345 states. Word has length 46 [2021-01-26 14:44:44,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:44,860 INFO L481 AbstractCegarLoop]: Abstraction has 2345 states. [2021-01-26 14:44:44,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states. [2021-01-26 14:44:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 14:44:44,869 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:44,870 INFO L504 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] [2021-01-26 14:44:45,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:45,084 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:45,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1795867972, now seen corresponding path program 2 times [2021-01-26 14:44:45,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:45,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280559601] [2021-01-26 14:44:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:45,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280559601] [2021-01-26 14:44:45,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592785518] [2021-01-26 14:44:45,244 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 [2021-01-26 14:44:45,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:45,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:45,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 14:44:45,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:45,355 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:45,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:45,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-26 14:44:45,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85843375] [2021-01-26 14:44:45,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:45,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:45,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:45,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:45,365 INFO L87 Difference]: Start difference. First operand 2345 states. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:45,537 INFO L93 Difference]: Finished difference Result 2745 states and 6760 transitions. [2021-01-26 14:44:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-26 14:44:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 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 [2021-01-26 14:44:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:45,544 INFO L225 Difference]: With dead ends: 2745 [2021-01-26 14:44:45,544 INFO L226 Difference]: Without dead ends: 2445 [2021-01-26 14:44:45,545 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:44:45,545 INFO L78 Accepts]: Start accepts. Automaton has 2445 states. Word has length 51 [2021-01-26 14:44:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:45,545 INFO L481 AbstractCegarLoop]: Abstraction has 2445 states. [2021-01-26 14:44:45,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states. [2021-01-26 14:44:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 14:44:45,550 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:45,551 INFO L504 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] [2021-01-26 14:44:45,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-26 14:44:45,766 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:45,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1129108430, now seen corresponding path program 3 times [2021-01-26 14:44:45,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:45,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324661158] [2021-01-26 14:44:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:45,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324661158] [2021-01-26 14:44:45,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863392354] [2021-01-26 14:44:45,939 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 [2021-01-26 14:44:46,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-26 14:44:46,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:46,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 14:44:46,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:46,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:46,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:46,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:46,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-26 14:44:46,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326234513] [2021-01-26 14:44:46,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:46,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:46,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:46,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:46,086 INFO L87 Difference]: Start difference. First operand 2445 states. 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) [2021-01-26 14:44:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:46,390 INFO L93 Difference]: Finished difference Result 2885 states and 7040 transitions. [2021-01-26 14:44:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 14:44:46,390 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 51 [2021-01-26 14:44:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:46,396 INFO L225 Difference]: With dead ends: 2885 [2021-01-26 14:44:46,397 INFO L226 Difference]: Without dead ends: 2570 [2021-01-26 14:44:46,397 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:44:46,397 INFO L78 Accepts]: Start accepts. Automaton has 2570 states. Word has length 51 [2021-01-26 14:44:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:46,398 INFO L481 AbstractCegarLoop]: Abstraction has 2570 states. [2021-01-26 14:44:46,398 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) [2021-01-26 14:44:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states. [2021-01-26 14:44:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 14:44:46,403 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:46,403 INFO L504 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] [2021-01-26 14:44:46,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:46,618 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:46,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:46,619 INFO L82 PathProgramCache]: Analyzing trace with hash -194830297, now seen corresponding path program 4 times [2021-01-26 14:44:46,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:46,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137336370] [2021-01-26 14:44:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:46,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137336370] [2021-01-26 14:44:46,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106084379] [2021-01-26 14:44:46,735 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 [2021-01-26 14:44:46,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:46,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:46,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:46,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:46,833 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:46,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:46,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:46,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-26 14:44:46,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097602159] [2021-01-26 14:44:46,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:46,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:46,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:46,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:46,868 INFO L87 Difference]: Start difference. First operand 2570 states. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:47,205 INFO L93 Difference]: Finished difference Result 3146 states and 7818 transitions. [2021-01-26 14:44:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-26 14:44:47,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 [2021-01-26 14:44:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:47,213 INFO L225 Difference]: With dead ends: 3146 [2021-01-26 14:44:47,213 INFO L226 Difference]: Without dead ends: 2645 [2021-01-26 14:44:47,214 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:44:47,214 INFO L78 Accepts]: Start accepts. Automaton has 2645 states. Word has length 51 [2021-01-26 14:44:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:47,215 INFO L481 AbstractCegarLoop]: Abstraction has 2645 states. [2021-01-26 14:44:47,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states. [2021-01-26 14:44:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:47,222 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:47,222 INFO L504 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] [2021-01-26 14:44:47,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:47,437 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash -688928278, now seen corresponding path program 5 times [2021-01-26 14:44:47,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:47,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861679742] [2021-01-26 14:44:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:47,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861679742] [2021-01-26 14:44:47,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822134364] [2021-01-26 14:44:47,581 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 [2021-01-26 14:44:47,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-26 14:44:47,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:47,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:47,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:47,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:47,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:47,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-26 14:44:47,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198562034] [2021-01-26 14:44:47,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:47,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:47,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:47,699 INFO L87 Difference]: Start difference. First operand 2645 states. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:47,919 INFO L93 Difference]: Finished difference Result 3045 states and 7415 transitions. [2021-01-26 14:44:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-26 14:44:47,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-01-26 14:44:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:48,013 INFO L225 Difference]: With dead ends: 3045 [2021-01-26 14:44:48,013 INFO L226 Difference]: Without dead ends: 2715 [2021-01-26 14:44:48,014 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:44:48,014 INFO L78 Accepts]: Start accepts. Automaton has 2715 states. Word has length 56 [2021-01-26 14:44:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:48,014 INFO L481 AbstractCegarLoop]: Abstraction has 2715 states. [2021-01-26 14:44:48,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states. [2021-01-26 14:44:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:48,019 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:48,019 INFO L504 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] [2021-01-26 14:44:48,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-26 14:44:48,219 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash -222787652, now seen corresponding path program 6 times [2021-01-26 14:44:48,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:48,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552209711] [2021-01-26 14:44:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:48,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552209711] [2021-01-26 14:44:48,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008063038] [2021-01-26 14:44:48,418 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 [2021-01-26 14:44:48,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-26 14:44:48,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:48,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:48,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:48,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:48,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:48,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:48,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-26 14:44:48,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139180349] [2021-01-26 14:44:48,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:48,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:48,564 INFO L87 Difference]: Start difference. First operand 2715 states. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-01-26 14:44:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:48,940 INFO L93 Difference]: Finished difference Result 3115 states and 7555 transitions. [2021-01-26 14:44:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:44:48,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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 56 [2021-01-26 14:44:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:48,952 INFO L225 Difference]: With dead ends: 3115 [2021-01-26 14:44:48,952 INFO L226 Difference]: Without dead ends: 2785 [2021-01-26 14:44:48,956 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:44:48,957 INFO L78 Accepts]: Start accepts. Automaton has 2785 states. Word has length 56 [2021-01-26 14:44:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states. [2021-01-26 14:44:48,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-01-26 14:44:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states. [2021-01-26 14:44:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:48,969 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:48,969 INFO L504 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] [2021-01-26 14:44:49,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-26 14:44:49,184 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:49,185 INFO L82 PathProgramCache]: Analyzing trace with hash -467361066, now seen corresponding path program 7 times [2021-01-26 14:44:49,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:49,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351510120] [2021-01-26 14:44:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:49,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351510120] [2021-01-26 14:44:49,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686430722] [2021-01-26 14:44:49,316 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 [2021-01-26 14:44:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:49,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:49,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:49,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:49,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:49,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-26 14:44:49,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485866373] [2021-01-26 14:44:49,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:49,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:49,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:49,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:49,414 INFO L87 Difference]: Start difference. First operand 2785 states. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:49,667 INFO L93 Difference]: Finished difference Result 3445 states and 8215 transitions. [2021-01-26 14:44:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-26 14:44:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-01-26 14:44:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:49,676 INFO L225 Difference]: With dead ends: 3445 [2021-01-26 14:44:49,676 INFO L226 Difference]: Without dead ends: 3115 [2021-01-26 14:44:49,676 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:44:49,676 INFO L78 Accepts]: Start accepts. Automaton has 3115 states. Word has length 56 [2021-01-26 14:44:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:49,677 INFO L481 AbstractCegarLoop]: Abstraction has 3115 states. [2021-01-26 14:44:49,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states. [2021-01-26 14:44:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:49,683 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:49,683 INFO L504 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] [2021-01-26 14:44:49,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-26 14:44:49,897 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:49,898 INFO L82 PathProgramCache]: Analyzing trace with hash 452241830, now seen corresponding path program 8 times [2021-01-26 14:44:49,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:49,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210483200] [2021-01-26 14:44:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:50,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210483200] [2021-01-26 14:44:50,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982340710] [2021-01-26 14:44:50,063 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 [2021-01-26 14:44:50,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:50,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:50,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:50,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:50,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:50,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:50,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:50,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-26 14:44:50,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562788151] [2021-01-26 14:44:50,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:50,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:50,189 INFO L87 Difference]: Start difference. First operand 3115 states. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-01-26 14:44:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:50,639 INFO L93 Difference]: Finished difference Result 3595 states and 8515 transitions. [2021-01-26 14:44:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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 56 [2021-01-26 14:44:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:50,646 INFO L225 Difference]: With dead ends: 3595 [2021-01-26 14:44:50,646 INFO L226 Difference]: Without dead ends: 3265 [2021-01-26 14:44:50,646 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:44:50,647 INFO L78 Accepts]: Start accepts. Automaton has 3265 states. Word has length 56 [2021-01-26 14:44:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:50,647 INFO L481 AbstractCegarLoop]: Abstraction has 3265 states. [2021-01-26 14:44:50,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-01-26 14:44:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states. [2021-01-26 14:44:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:50,652 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:50,653 INFO L504 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] [2021-01-26 14:44:50,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-26 14:44:50,854 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash 804317748, now seen corresponding path program 9 times [2021-01-26 14:44:50,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:50,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114385514] [2021-01-26 14:44:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:50,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114385514] [2021-01-26 14:44:50,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430055757] [2021-01-26 14:44:50,970 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 [2021-01-26 14:44:51,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-26 14:44:51,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:51,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:51,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:51,064 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:51,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:51,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-26 14:44:51,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862263462] [2021-01-26 14:44:51,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:51,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:51,073 INFO L87 Difference]: Start difference. First operand 3265 states. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:51,412 INFO L93 Difference]: Finished difference Result 4817 states and 11919 transitions. [2021-01-26 14:44:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-26 14:44:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-01-26 14:44:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:51,423 INFO L225 Difference]: With dead ends: 4817 [2021-01-26 14:44:51,425 INFO L226 Difference]: Without dead ends: 4502 [2021-01-26 14:44:51,425 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:44:51,426 INFO L78 Accepts]: Start accepts. Automaton has 4502 states. Word has length 56 [2021-01-26 14:44:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:51,426 INFO L481 AbstractCegarLoop]: Abstraction has 4502 states. [2021-01-26 14:44:51,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:51,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states. [2021-01-26 14:44:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:51,432 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:51,433 INFO L504 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] [2021-01-26 14:44:51,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-26 14:44:51,648 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:51,649 INFO L82 PathProgramCache]: Analyzing trace with hash 801344518, now seen corresponding path program 10 times [2021-01-26 14:44:51,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:51,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381446200] [2021-01-26 14:44:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:51,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381446200] [2021-01-26 14:44:51,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149149956] [2021-01-26 14:44:51,779 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 [2021-01-26 14:44:51,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:51,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:51,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:51,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:51,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:51,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:51,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:51,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-26 14:44:51,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341337357] [2021-01-26 14:44:51,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:51,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:51,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:51,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:51,921 INFO L87 Difference]: Start difference. First operand 4502 states. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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) [2021-01-26 14:44:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:52,554 INFO L93 Difference]: Finished difference Result 4310 states and 10281 transitions. [2021-01-26 14:44:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:44:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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 [2021-01-26 14:44:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:52,560 INFO L225 Difference]: With dead ends: 4310 [2021-01-26 14:44:52,560 INFO L226 Difference]: Without dead ends: 3595 [2021-01-26 14:44:52,561 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-01-26 14:44:52,561 INFO L78 Accepts]: Start accepts. Automaton has 3595 states. Word has length 56 [2021-01-26 14:44:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:52,562 INFO L481 AbstractCegarLoop]: Abstraction has 3595 states. [2021-01-26 14:44:52,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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) [2021-01-26 14:44:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states. [2021-01-26 14:44:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:52,569 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:52,569 INFO L504 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] [2021-01-26 14:44:52,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:52,782 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:52,783 INFO L82 PathProgramCache]: Analyzing trace with hash 548080699, now seen corresponding path program 11 times [2021-01-26 14:44:52,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:52,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427115013] [2021-01-26 14:44:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:52,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427115013] [2021-01-26 14:44:52,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807066730] [2021-01-26 14:44:52,944 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 [2021-01-26 14:44:53,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-26 14:44:53,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:53,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:53,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:53,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:53,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:53,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-26 14:44:53,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665254414] [2021-01-26 14:44:53,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:53,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:53,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:53,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:53,056 INFO L87 Difference]: Start difference. First operand 3595 states. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:53,284 INFO L93 Difference]: Finished difference Result 3980 states and 9355 transitions. [2021-01-26 14:44:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-26 14:44:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2021-01-26 14:44:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:53,290 INFO L225 Difference]: With dead ends: 3980 [2021-01-26 14:44:53,290 INFO L226 Difference]: Without dead ends: 3695 [2021-01-26 14:44:53,290 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:44:53,290 INFO L78 Accepts]: Start accepts. Automaton has 3695 states. Word has length 61 [2021-01-26 14:44:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:53,291 INFO L481 AbstractCegarLoop]: Abstraction has 3695 states. [2021-01-26 14:44:53,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states. [2021-01-26 14:44:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:53,297 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:53,297 INFO L504 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] [2021-01-26 14:44:53,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:53,511 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash 503720845, now seen corresponding path program 12 times [2021-01-26 14:44:53,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:53,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011428479] [2021-01-26 14:44:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:53,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011428479] [2021-01-26 14:44:53,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948063758] [2021-01-26 14:44:53,676 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 [2021-01-26 14:44:53,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-26 14:44:53,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:53,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:53,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:53,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:53,789 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:53,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:53,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-26 14:44:53,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943984238] [2021-01-26 14:44:53,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:53,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:53,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:53,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:53,800 INFO L87 Difference]: Start difference. First operand 3695 states. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:54,159 INFO L93 Difference]: Finished difference Result 4080 states and 9555 transitions. [2021-01-26 14:44:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-26 14:44:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2021-01-26 14:44:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:54,164 INFO L225 Difference]: With dead ends: 4080 [2021-01-26 14:44:54,164 INFO L226 Difference]: Without dead ends: 3795 [2021-01-26 14:44:54,165 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:44:54,165 INFO L78 Accepts]: Start accepts. Automaton has 3795 states. Word has length 61 [2021-01-26 14:44:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:54,165 INFO L481 AbstractCegarLoop]: Abstraction has 3795 states. [2021-01-26 14:44:54,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states. [2021-01-26 14:44:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:54,172 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:54,173 INFO L504 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] [2021-01-26 14:44:54,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-26 14:44:54,387 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:54,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1988537895, now seen corresponding path program 13 times [2021-01-26 14:44:54,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:54,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937603740] [2021-01-26 14:44:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:54,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937603740] [2021-01-26 14:44:54,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403697287] [2021-01-26 14:44:54,536 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 [2021-01-26 14:44:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:54,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:54,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:54,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:54,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:54,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-26 14:44:54,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701914158] [2021-01-26 14:44:54,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:54,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:54,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:54,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:54,661 INFO L87 Difference]: Start difference. First operand 3795 states. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:54,990 INFO L93 Difference]: Finished difference Result 4180 states and 9755 transitions. [2021-01-26 14:44:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:44:54,990 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2021-01-26 14:44:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:54,995 INFO L225 Difference]: With dead ends: 4180 [2021-01-26 14:44:54,995 INFO L226 Difference]: Without dead ends: 3895 [2021-01-26 14:44:54,996 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:44:54,996 INFO L78 Accepts]: Start accepts. Automaton has 3895 states. Word has length 61 [2021-01-26 14:44:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:54,996 INFO L481 AbstractCegarLoop]: Abstraction has 3895 states. [2021-01-26 14:44:54,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:54,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states. [2021-01-26 14:44:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:55,001 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:55,002 INFO L504 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] [2021-01-26 14:44:55,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:55,204 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1084722953, now seen corresponding path program 14 times [2021-01-26 14:44:55,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:55,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621008931] [2021-01-26 14:44:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:55,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621008931] [2021-01-26 14:44:55,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249122146] [2021-01-26 14:44:55,397 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 [2021-01-26 14:44:55,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:55,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:55,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:55,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:55,542 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:55,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:55,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:55,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-26 14:44:55,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732985619] [2021-01-26 14:44:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:55,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:55,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:55,607 INFO L87 Difference]: Start difference. First operand 3895 states. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:56,077 INFO L93 Difference]: Finished difference Result 4500 states and 10395 transitions. [2021-01-26 14:44:56,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:56,078 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2021-01-26 14:44:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:56,083 INFO L225 Difference]: With dead ends: 4500 [2021-01-26 14:44:56,083 INFO L226 Difference]: Without dead ends: 4215 [2021-01-26 14:44:56,084 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2021-01-26 14:44:56,084 INFO L78 Accepts]: Start accepts. Automaton has 4215 states. Word has length 61 [2021-01-26 14:44:56,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:56,084 INFO L481 AbstractCegarLoop]: Abstraction has 4215 states. [2021-01-26 14:44:56,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states. [2021-01-26 14:44:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:56,092 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:56,092 INFO L504 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] [2021-01-26 14:44:56,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-26 14:44:56,307 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:56,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2120210981, now seen corresponding path program 15 times [2021-01-26 14:44:56,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:56,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459854507] [2021-01-26 14:44:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:56,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459854507] [2021-01-26 14:44:56,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314361733] [2021-01-26 14:44:56,548 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 [2021-01-26 14:44:56,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-26 14:44:56,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:56,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:56,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:56,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:56,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-26 14:44:56,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154919303] [2021-01-26 14:44:56,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:56,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:56,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:56,716 INFO L87 Difference]: Start difference. First operand 4215 states. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:57,144 INFO L93 Difference]: Finished difference Result 4705 states and 10870 transitions. [2021-01-26 14:44:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-26 14:44:57,145 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2021-01-26 14:44:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:57,152 INFO L225 Difference]: With dead ends: 4705 [2021-01-26 14:44:57,153 INFO L226 Difference]: Without dead ends: 4420 [2021-01-26 14:44:57,153 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-01-26 14:44:57,153 INFO L78 Accepts]: Start accepts. Automaton has 4420 states. Word has length 61 [2021-01-26 14:44:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:57,154 INFO L481 AbstractCegarLoop]: Abstraction has 4420 states. [2021-01-26 14:44:57,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states. [2021-01-26 14:44:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:57,164 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:57,164 INFO L504 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] [2021-01-26 14:44:57,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-26 14:44:57,377 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:57,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:57,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1255153419, now seen corresponding path program 16 times [2021-01-26 14:44:57,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:57,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903541189] [2021-01-26 14:44:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:57,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903541189] [2021-01-26 14:44:57,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399180530] [2021-01-26 14:44:57,535 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 [2021-01-26 14:44:57,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:57,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:57,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:44:57,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:57,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:57,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:57,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:57,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-26 14:44:57,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772050818] [2021-01-26 14:44:57,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:57,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:57,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:57,674 INFO L87 Difference]: Start difference. First operand 4420 states. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:58,257 INFO L93 Difference]: Finished difference Result 5354 states and 12519 transitions. [2021-01-26 14:44:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:44:58,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2021-01-26 14:44:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:58,266 INFO L225 Difference]: With dead ends: 5354 [2021-01-26 14:44:58,266 INFO L226 Difference]: Without dead ends: 4725 [2021-01-26 14:44:58,267 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2021-01-26 14:44:58,267 INFO L78 Accepts]: Start accepts. Automaton has 4725 states. Word has length 61 [2021-01-26 14:44:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:58,267 INFO L481 AbstractCegarLoop]: Abstraction has 4725 states. [2021-01-26 14:44:58,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states. [2021-01-26 14:44:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:58,273 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:58,273 INFO L504 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] [2021-01-26 14:44:58,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-26 14:44:58,487 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:58,488 INFO L82 PathProgramCache]: Analyzing trace with hash -903077501, now seen corresponding path program 17 times [2021-01-26 14:44:58,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:58,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17278101] [2021-01-26 14:44:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:58,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17278101] [2021-01-26 14:44:58,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563029896] [2021-01-26 14:44:58,607 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 [2021-01-26 14:44:58,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-26 14:44:58,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:58,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:58,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:58,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:58,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:58,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-01-26 14:44:58,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255395643] [2021-01-26 14:44:58,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:58,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:58,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:58,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:58,733 INFO L87 Difference]: Start difference. First operand 4725 states. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:59,228 INFO L93 Difference]: Finished difference Result 6197 states and 14944 transitions. [2021-01-26 14:44:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:44:59,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2021-01-26 14:44:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:59,235 INFO L225 Difference]: With dead ends: 6197 [2021-01-26 14:44:59,235 INFO L226 Difference]: Without dead ends: 5912 [2021-01-26 14:44:59,236 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-01-26 14:44:59,236 INFO L78 Accepts]: Start accepts. Automaton has 5912 states. Word has length 61 [2021-01-26 14:44:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:59,236 INFO L481 AbstractCegarLoop]: Abstraction has 5912 states. [2021-01-26 14:44:59,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states. [2021-01-26 14:44:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:59,243 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:59,243 INFO L504 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] [2021-01-26 14:44:59,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-26 14:44:59,458 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash -906050731, now seen corresponding path program 18 times [2021-01-26 14:44:59,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:59,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458484761] [2021-01-26 14:44:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:59,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458484761] [2021-01-26 14:44:59,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396040427] [2021-01-26 14:44:59,595 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 [2021-01-26 14:44:59,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-26 14:44:59,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:59,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:59,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:59,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:59,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:59,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:59,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-26 14:44:59,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252941130] [2021-01-26 14:44:59,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:59,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:59,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:59,740 INFO L87 Difference]: Start difference. First operand 5912 states. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 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) [2021-01-26 14:45:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:00,414 INFO L93 Difference]: Finished difference Result 5845 states and 13681 transitions. [2021-01-26 14:45:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:45:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 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 [2021-01-26 14:45:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:00,421 INFO L225 Difference]: With dead ends: 5845 [2021-01-26 14:45:00,421 INFO L226 Difference]: Without dead ends: 5160 [2021-01-26 14:45:00,422 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-01-26 14:45:00,422 INFO L78 Accepts]: Start accepts. Automaton has 5160 states. Word has length 61 [2021-01-26 14:45:00,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:00,422 INFO L481 AbstractCegarLoop]: Abstraction has 5160 states. [2021-01-26 14:45:00,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 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) [2021-01-26 14:45:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states. [2021-01-26 14:45:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:00,431 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:00,432 INFO L504 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] [2021-01-26 14:45:00,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-26 14:45:00,646 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:00,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:00,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1591649445, now seen corresponding path program 19 times [2021-01-26 14:45:00,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:00,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744446294] [2021-01-26 14:45:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:00,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744446294] [2021-01-26 14:45:00,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93083513] [2021-01-26 14:45:00,810 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 [2021-01-26 14:45:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:00,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:00,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:00,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:00,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:00,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:45:00,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137893903] [2021-01-26 14:45:00,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:45:00,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:45:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:45:00,920 INFO L87 Difference]: Start difference. First operand 5160 states. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:01,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:01,208 INFO L93 Difference]: Finished difference Result 5480 states and 12700 transitions. [2021-01-26 14:45:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 14:45:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2021-01-26 14:45:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:01,215 INFO L225 Difference]: With dead ends: 5480 [2021-01-26 14:45:01,215 INFO L226 Difference]: Without dead ends: 5210 [2021-01-26 14:45:01,215 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:45:01,215 INFO L78 Accepts]: Start accepts. Automaton has 5210 states. Word has length 66 [2021-01-26 14:45:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:01,216 INFO L481 AbstractCegarLoop]: Abstraction has 5210 states. [2021-01-26 14:45:01,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states. [2021-01-26 14:45:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:01,223 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:01,223 INFO L504 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] [2021-01-26 14:45:01,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:01,425 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1636009299, now seen corresponding path program 20 times [2021-01-26 14:45:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:01,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352880311] [2021-01-26 14:45:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:01,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352880311] [2021-01-26 14:45:01,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232318455] [2021-01-26 14:45:01,603 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 [2021-01-26 14:45:01,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:01,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:01,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:01,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:01,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:01,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:01,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-26 14:45:01,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984160072] [2021-01-26 14:45:01,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:01,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:01,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:01,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:01,722 INFO L87 Difference]: Start difference. First operand 5210 states. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2021-01-26 14:45:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:02,202 INFO L93 Difference]: Finished difference Result 5530 states and 12800 transitions. [2021-01-26 14:45:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:45:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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 66 [2021-01-26 14:45:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:02,208 INFO L225 Difference]: With dead ends: 5530 [2021-01-26 14:45:02,209 INFO L226 Difference]: Without dead ends: 5260 [2021-01-26 14:45:02,209 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:45:02,209 INFO L78 Accepts]: Start accepts. Automaton has 5260 states. Word has length 66 [2021-01-26 14:45:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:02,210 INFO L481 AbstractCegarLoop]: Abstraction has 5260 states. [2021-01-26 14:45:02,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2021-01-26 14:45:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states. [2021-01-26 14:45:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:02,216 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:02,217 INFO L504 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] [2021-01-26 14:45:02,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-26 14:45:02,430 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:02,431 INFO L82 PathProgramCache]: Analyzing trace with hash -151192249, now seen corresponding path program 21 times [2021-01-26 14:45:02,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:02,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068053264] [2021-01-26 14:45:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:02,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068053264] [2021-01-26 14:45:02,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531541918] [2021-01-26 14:45:02,583 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 [2021-01-26 14:45:02,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-26 14:45:02,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:02,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:02,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:02,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:02,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:02,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:45:02,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216578561] [2021-01-26 14:45:02,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:45:02,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:02,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:45:02,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:45:02,688 INFO L87 Difference]: Start difference. First operand 5260 states. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:03,046 INFO L93 Difference]: Finished difference Result 5580 states and 12900 transitions. [2021-01-26 14:45:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-26 14:45:03,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2021-01-26 14:45:03,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:03,053 INFO L225 Difference]: With dead ends: 5580 [2021-01-26 14:45:03,053 INFO L226 Difference]: Without dead ends: 5310 [2021-01-26 14:45:03,053 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:45:03,054 INFO L78 Accepts]: Start accepts. Automaton has 5310 states. Word has length 66 [2021-01-26 14:45:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:03,054 INFO L481 AbstractCegarLoop]: Abstraction has 5310 states. [2021-01-26 14:45:03,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states. [2021-01-26 14:45:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:03,059 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:03,059 INFO L504 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] [2021-01-26 14:45:03,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:03,260 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:03,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1070514199, now seen corresponding path program 22 times [2021-01-26 14:45:03,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:03,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486435952] [2021-01-26 14:45:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:03,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486435952] [2021-01-26 14:45:03,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904354235] [2021-01-26 14:45:03,420 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 [2021-01-26 14:45:03,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:03,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:03,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:03,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:03,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:03,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:03,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:03,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-26 14:45:03,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494275781] [2021-01-26 14:45:03,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:03,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:03,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:03,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:03,554 INFO L87 Difference]: Start difference. First operand 5310 states. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2021-01-26 14:45:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:04,066 INFO L93 Difference]: Finished difference Result 5630 states and 13000 transitions. [2021-01-26 14:45:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:45:04,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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 66 [2021-01-26 14:45:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:04,072 INFO L225 Difference]: With dead ends: 5630 [2021-01-26 14:45:04,072 INFO L226 Difference]: Without dead ends: 5360 [2021-01-26 14:45:04,073 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2021-01-26 14:45:04,073 INFO L78 Accepts]: Start accepts. Automaton has 5360 states. Word has length 66 [2021-01-26 14:45:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:04,073 INFO L481 AbstractCegarLoop]: Abstraction has 5360 states. [2021-01-26 14:45:04,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2021-01-26 14:45:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states. [2021-01-26 14:45:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:04,078 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:04,078 INFO L504 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] [2021-01-26 14:45:04,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-26 14:45:04,282 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:04,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:04,282 INFO L82 PathProgramCache]: Analyzing trace with hash -19519163, now seen corresponding path program 23 times [2021-01-26 14:45:04,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:04,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642148072] [2021-01-26 14:45:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:04,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642148072] [2021-01-26 14:45:04,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247763939] [2021-01-26 14:45:04,426 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 [2021-01-26 14:45:04,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-26 14:45:04,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:04,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:04,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:04,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:45:04,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320837575] [2021-01-26 14:45:04,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:45:04,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:04,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:45:04,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:45:04,622 INFO L87 Difference]: Start difference. First operand 5360 states. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:05,026 INFO L93 Difference]: Finished difference Result 5680 states and 13100 transitions. [2021-01-26 14:45:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-26 14:45:05,027 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2021-01-26 14:45:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:05,033 INFO L225 Difference]: With dead ends: 5680 [2021-01-26 14:45:05,033 INFO L226 Difference]: Without dead ends: 5410 [2021-01-26 14:45:05,034 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:45:05,034 INFO L78 Accepts]: Start accepts. Automaton has 5410 states. Word has length 66 [2021-01-26 14:45:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:05,034 INFO L481 AbstractCegarLoop]: Abstraction has 5410 states. [2021-01-26 14:45:05,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states. [2021-01-26 14:45:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:05,039 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:05,040 INFO L504 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] [2021-01-26 14:45:05,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:05,240 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 900083733, now seen corresponding path program 24 times [2021-01-26 14:45:05,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:05,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866239292] [2021-01-26 14:45:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:05,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866239292] [2021-01-26 14:45:05,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919086741] [2021-01-26 14:45:05,387 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 [2021-01-26 14:45:05,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-26 14:45:05,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:05,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:05,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:05,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:05,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:05,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:05,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-26 14:45:05,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89055833] [2021-01-26 14:45:05,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:05,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:05,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:05,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:05,554 INFO L87 Difference]: Start difference. First operand 5410 states. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2021-01-26 14:45:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:06,185 INFO L93 Difference]: Finished difference Result 6114 states and 14224 transitions. [2021-01-26 14:45:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:45:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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 66 [2021-01-26 14:45:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:06,192 INFO L225 Difference]: With dead ends: 6114 [2021-01-26 14:45:06,192 INFO L226 Difference]: Without dead ends: 5530 [2021-01-26 14:45:06,193 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2021-01-26 14:45:06,193 INFO L78 Accepts]: Start accepts. Automaton has 5530 states. Word has length 66 [2021-01-26 14:45:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:06,193 INFO L481 AbstractCegarLoop]: Abstraction has 5530 states. [2021-01-26 14:45:06,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2021-01-26 14:45:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states. [2021-01-26 14:45:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:06,200 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:06,200 INFO L504 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] [2021-01-26 14:45:06,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-26 14:45:06,403 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:06,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1252159651, now seen corresponding path program 25 times [2021-01-26 14:45:06,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:06,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442434133] [2021-01-26 14:45:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:06,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442434133] [2021-01-26 14:45:06,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621546318] [2021-01-26 14:45:06,541 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 [2021-01-26 14:45:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:06,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:06,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:06,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:06,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:06,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:45:06,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237224555] [2021-01-26 14:45:06,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:45:06,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:06,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:45:06,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:45:06,641 INFO L87 Difference]: Start difference. First operand 5530 states. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:07,177 INFO L93 Difference]: Finished difference Result 7002 states and 16754 transitions. [2021-01-26 14:45:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:45:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2021-01-26 14:45:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:07,185 INFO L225 Difference]: With dead ends: 7002 [2021-01-26 14:45:07,185 INFO L226 Difference]: Without dead ends: 6717 [2021-01-26 14:45:07,186 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2021-01-26 14:45:07,186 INFO L78 Accepts]: Start accepts. Automaton has 6717 states. Word has length 66 [2021-01-26 14:45:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:07,186 INFO L481 AbstractCegarLoop]: Abstraction has 6717 states. [2021-01-26 14:45:07,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:07,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states. [2021-01-26 14:45:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:45:07,192 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:07,192 INFO L504 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] [2021-01-26 14:45:07,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:07,393 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:07,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:07,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1249186421, now seen corresponding path program 26 times [2021-01-26 14:45:07,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:07,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745304852] [2021-01-26 14:45:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:07,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745304852] [2021-01-26 14:45:07,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144809916] [2021-01-26 14:45:07,550 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 [2021-01-26 14:45:07,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:07,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:07,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:45:07,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:07,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:07,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:07,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:07,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-26 14:45:07,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710034032] [2021-01-26 14:45:07,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:45:07,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:07,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:45:07,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:45:07,715 INFO L87 Difference]: Start difference. First operand 6717 states. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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) [2021-01-26 14:45:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:08,532 INFO L93 Difference]: Finished difference Result 6525 states and 15191 transitions. [2021-01-26 14:45:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:45:08,532 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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 [2021-01-26 14:45:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:08,538 INFO L225 Difference]: With dead ends: 6525 [2021-01-26 14:45:08,538 INFO L226 Difference]: Without dead ends: 5840 [2021-01-26 14:45:08,538 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2021-01-26 14:45:08,538 INFO L78 Accepts]: Start accepts. Automaton has 5840 states. Word has length 66 [2021-01-26 14:45:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:08,539 INFO L481 AbstractCegarLoop]: Abstraction has 5840 states. [2021-01-26 14:45:08,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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) [2021-01-26 14:45:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states. [2021-01-26 14:45:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:08,544 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:08,544 INFO L504 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] [2021-01-26 14:45:08,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-26 14:45:08,750 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1334750316, now seen corresponding path program 27 times [2021-01-26 14:45:08,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:08,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902103797] [2021-01-26 14:45:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:08,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902103797] [2021-01-26 14:45:08,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156939735] [2021-01-26 14:45:08,948 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 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 [2021-01-26 14:45:09,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-26 14:45:09,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:09,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:09,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:09,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:09,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:09,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-26 14:45:09,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920242830] [2021-01-26 14:45:09,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:09,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:09,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:09,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:09,061 INFO L87 Difference]: Start difference. First operand 5840 states. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:09,353 INFO L93 Difference]: Finished difference Result 6160 states and 14210 transitions. [2021-01-26 14:45:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 14:45:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2021-01-26 14:45:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:09,359 INFO L225 Difference]: With dead ends: 6160 [2021-01-26 14:45:09,359 INFO L226 Difference]: Without dead ends: 5890 [2021-01-26 14:45:09,361 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:45:09,361 INFO L78 Accepts]: Start accepts. Automaton has 5890 states. Word has length 71 [2021-01-26 14:45:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:09,361 INFO L481 AbstractCegarLoop]: Abstraction has 5890 states. [2021-01-26 14:45:09,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states. [2021-01-26 14:45:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:09,368 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:09,368 INFO L504 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] [2021-01-26 14:45:09,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:09,582 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash -99594946, now seen corresponding path program 28 times [2021-01-26 14:45:09,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:09,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101875255] [2021-01-26 14:45:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:09,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101875255] [2021-01-26 14:45:09,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511543849] [2021-01-26 14:45:09,795 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 [2021-01-26 14:45:09,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:09,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:09,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:09,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:09,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:09,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:09,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:09,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-26 14:45:09,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835819975] [2021-01-26 14:45:09,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:45:09,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:09,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:45:09,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:45:09,936 INFO L87 Difference]: Start difference. First operand 5890 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:10,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:10,384 INFO L93 Difference]: Finished difference Result 6210 states and 14310 transitions. [2021-01-26 14:45:10,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-26 14:45:10,384 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-01-26 14:45:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:10,391 INFO L225 Difference]: With dead ends: 6210 [2021-01-26 14:45:10,391 INFO L226 Difference]: Without dead ends: 5940 [2021-01-26 14:45:10,392 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:45:10,392 INFO L78 Accepts]: Start accepts. Automaton has 5940 states. Word has length 71 [2021-01-26 14:45:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:10,392 INFO L481 AbstractCegarLoop]: Abstraction has 5940 states. [2021-01-26 14:45:10,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states. [2021-01-26 14:45:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:10,399 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:10,400 INFO L504 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] [2021-01-26 14:45:10,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-26 14:45:10,615 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:10,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1726601048, now seen corresponding path program 29 times [2021-01-26 14:45:10,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:10,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407485143] [2021-01-26 14:45:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:10,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407485143] [2021-01-26 14:45:10,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986629945] [2021-01-26 14:45:10,786 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 [2021-01-26 14:45:10,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-26 14:45:10,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:10,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:10,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:10,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:10,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:10,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-26 14:45:10,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463508218] [2021-01-26 14:45:10,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:10,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:10,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:10,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:10,913 INFO L87 Difference]: Start difference. First operand 5940 states. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:11,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:11,294 INFO L93 Difference]: Finished difference Result 6260 states and 14410 transitions. [2021-01-26 14:45:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:45:11,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2021-01-26 14:45:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:11,301 INFO L225 Difference]: With dead ends: 6260 [2021-01-26 14:45:11,301 INFO L226 Difference]: Without dead ends: 5990 [2021-01-26 14:45:11,302 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:45:11,302 INFO L78 Accepts]: Start accepts. Automaton has 5990 states. Word has length 71 [2021-01-26 14:45:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:11,302 INFO L481 AbstractCegarLoop]: Abstraction has 5990 states. [2021-01-26 14:45:11,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5990 states. [2021-01-26 14:45:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:11,308 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:11,308 INFO L504 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] [2021-01-26 14:45:11,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-26 14:45:11,521 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash -406694360, now seen corresponding path program 30 times [2021-01-26 14:45:11,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:11,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343637784] [2021-01-26 14:45:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:11,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343637784] [2021-01-26 14:45:11,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931511768] [2021-01-26 14:45:11,730 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 [2021-01-26 14:45:11,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-26 14:45:11,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:11,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:11,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:11,832 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:11,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:11,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:11,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-26 14:45:11,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3218035] [2021-01-26 14:45:11,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:45:11,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:11,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:45:11,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:45:11,868 INFO L87 Difference]: Start difference. First operand 5990 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:12,335 INFO L93 Difference]: Finished difference Result 6360 states and 14610 transitions. [2021-01-26 14:45:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:45:12,335 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-01-26 14:45:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:12,346 INFO L225 Difference]: With dead ends: 6360 [2021-01-26 14:45:12,346 INFO L226 Difference]: Without dead ends: 6090 [2021-01-26 14:45:12,347 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-01-26 14:45:12,347 INFO L78 Accepts]: Start accepts. Automaton has 6090 states. Word has length 71 [2021-01-26 14:45:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:12,347 INFO L481 AbstractCegarLoop]: Abstraction has 6090 states. [2021-01-26 14:45:12,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states. [2021-01-26 14:45:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:12,355 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:12,355 INFO L504 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] [2021-01-26 14:45:12,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-26 14:45:12,570 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:12,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1483906518, now seen corresponding path program 31 times [2021-01-26 14:45:12,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:12,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831034468] [2021-01-26 14:45:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:12,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831034468] [2021-01-26 14:45:12,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601978020] [2021-01-26 14:45:12,741 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 [2021-01-26 14:45:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:12,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:12,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:12,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:12,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:12,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-26 14:45:12,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004565524] [2021-01-26 14:45:12,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:12,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:12,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:12,855 INFO L87 Difference]: Start difference. First operand 6090 states. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:13,380 INFO L93 Difference]: Finished difference Result 6410 states and 14710 transitions. [2021-01-26 14:45:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:45:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2021-01-26 14:45:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:13,387 INFO L225 Difference]: With dead ends: 6410 [2021-01-26 14:45:13,387 INFO L226 Difference]: Without dead ends: 6140 [2021-01-26 14:45:13,388 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2021-01-26 14:45:13,388 INFO L78 Accepts]: Start accepts. Automaton has 6140 states. Word has length 71 [2021-01-26 14:45:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:13,388 INFO L481 AbstractCegarLoop]: Abstraction has 6140 states. [2021-01-26 14:45:13,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states. [2021-01-26 14:45:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:13,395 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:13,395 INFO L504 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] [2021-01-26 14:45:13,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-26 14:45:13,596 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:13,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1589354330, now seen corresponding path program 32 times [2021-01-26 14:45:13,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:13,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314983392] [2021-01-26 14:45:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:13,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314983392] [2021-01-26 14:45:13,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355438802] [2021-01-26 14:45:13,768 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 [2021-01-26 14:45:13,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:13,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:13,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:13,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:13,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:13,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:13,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:13,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-26 14:45:13,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857674174] [2021-01-26 14:45:13,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:45:13,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:13,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:45:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:45:13,902 INFO L87 Difference]: Start difference. First operand 6140 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:14,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:14,488 INFO L93 Difference]: Finished difference Result 6460 states and 14810 transitions. [2021-01-26 14:45:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:45:14,488 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-01-26 14:45:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:14,494 INFO L225 Difference]: With dead ends: 6460 [2021-01-26 14:45:14,495 INFO L226 Difference]: Without dead ends: 6190 [2021-01-26 14:45:14,495 INFO L769 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 [2021-01-26 14:45:14,495 INFO L78 Accepts]: Start accepts. Automaton has 6190 states. Word has length 71 [2021-01-26 14:45:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:14,495 INFO L481 AbstractCegarLoop]: Abstraction has 6190 states. [2021-01-26 14:45:14,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states. [2021-01-26 14:45:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:14,500 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:14,500 INFO L504 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] [2021-01-26 14:45:14,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:14,701 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:14,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1615579604, now seen corresponding path program 33 times [2021-01-26 14:45:14,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:14,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706750211] [2021-01-26 14:45:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:14,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706750211] [2021-01-26 14:45:14,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818079547] [2021-01-26 14:45:14,849 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 [2021-01-26 14:45:14,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-26 14:45:14,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:14,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:14,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:14,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:14,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:14,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-26 14:45:14,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257114306] [2021-01-26 14:45:14,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:14,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:14,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:14,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:14,960 INFO L87 Difference]: Start difference. First operand 6190 states. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:15,457 INFO L93 Difference]: Finished difference Result 6510 states and 14910 transitions. [2021-01-26 14:45:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:45:15,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2021-01-26 14:45:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:15,464 INFO L225 Difference]: With dead ends: 6510 [2021-01-26 14:45:15,464 INFO L226 Difference]: Without dead ends: 6240 [2021-01-26 14:45:15,465 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-01-26 14:45:15,465 INFO L78 Accepts]: Start accepts. Automaton has 6240 states. Word has length 71 [2021-01-26 14:45:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:15,465 INFO L481 AbstractCegarLoop]: Abstraction has 6240 states. [2021-01-26 14:45:15,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states. [2021-01-26 14:45:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:15,471 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:15,471 INFO L504 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] [2021-01-26 14:45:15,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-01-26 14:45:15,672 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:15,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1759784796, now seen corresponding path program 34 times [2021-01-26 14:45:15,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:15,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609591588] [2021-01-26 14:45:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:15,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609591588] [2021-01-26 14:45:15,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349615292] [2021-01-26 14:45:15,832 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 [2021-01-26 14:45:15,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:15,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:15,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:15,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:15,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:15,948 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:15,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:15,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-26 14:45:15,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333903791] [2021-01-26 14:45:15,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:45:15,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:15,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:45:15,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:45:15,963 INFO L87 Difference]: Start difference. First operand 6240 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:16,789 INFO L93 Difference]: Finished difference Result 6944 states and 16034 transitions. [2021-01-26 14:45:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:45:16,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-01-26 14:45:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:16,796 INFO L225 Difference]: With dead ends: 6944 [2021-01-26 14:45:16,797 INFO L226 Difference]: Without dead ends: 6360 [2021-01-26 14:45:16,797 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:45:16,797 INFO L78 Accepts]: Start accepts. Automaton has 6360 states. Word has length 71 [2021-01-26 14:45:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:16,798 INFO L481 AbstractCegarLoop]: Abstraction has 6360 states. [2021-01-26 14:45:16,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states. [2021-01-26 14:45:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:16,803 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:16,803 INFO L504 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] [2021-01-26 14:45:17,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-26 14:45:17,004 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:17,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1407708878, now seen corresponding path program 35 times [2021-01-26 14:45:17,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:17,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145754002] [2021-01-26 14:45:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:17,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145754002] [2021-01-26 14:45:17,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978693803] [2021-01-26 14:45:17,152 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 [2021-01-26 14:45:17,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-26 14:45:17,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:17,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:17,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:17,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:17,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:17,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-01-26 14:45:17,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265707294] [2021-01-26 14:45:17,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:45:17,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:45:17,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:45:17,256 INFO L87 Difference]: Start difference. First operand 6360 states. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:17,820 INFO L93 Difference]: Finished difference Result 7832 states and 18564 transitions. [2021-01-26 14:45:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:45:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2021-01-26 14:45:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:17,828 INFO L225 Difference]: With dead ends: 7832 [2021-01-26 14:45:17,828 INFO L226 Difference]: Without dead ends: 7547 [2021-01-26 14:45:17,829 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-01-26 14:45:17,829 INFO L78 Accepts]: Start accepts. Automaton has 7547 states. Word has length 71 [2021-01-26 14:45:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:17,829 INFO L481 AbstractCegarLoop]: Abstraction has 7547 states. [2021-01-26 14:45:17,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7547 states. [2021-01-26 14:45:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:45:17,834 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:17,834 INFO L504 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] [2021-01-26 14:45:18,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:18,035 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1410682108, now seen corresponding path program 36 times [2021-01-26 14:45:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:18,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743530275] [2021-01-26 14:45:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:18,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743530275] [2021-01-26 14:45:18,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909404351] [2021-01-26 14:45:18,218 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 [2021-01-26 14:45:18,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-26 14:45:18,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:18,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:45:18,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:18,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:18,330 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:18,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:18,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-26 14:45:18,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708130290] [2021-01-26 14:45:18,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:45:18,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:18,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:45:18,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:45:18,340 INFO L87 Difference]: Start difference. First operand 7547 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:19,063 INFO L93 Difference]: Finished difference Result 7099 states and 16361 transitions. [2021-01-26 14:45:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:45:19,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-01-26 14:45:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:19,070 INFO L225 Difference]: With dead ends: 7099 [2021-01-26 14:45:19,070 INFO L226 Difference]: Without dead ends: 6530 [2021-01-26 14:45:19,071 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:45:19,071 INFO L78 Accepts]: Start accepts. Automaton has 6530 states. Word has length 71 [2021-01-26 14:45:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:19,071 INFO L481 AbstractCegarLoop]: Abstraction has 6530 states. [2021-01-26 14:45:19,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states. [2021-01-26 14:45:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:19,077 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:19,077 INFO L504 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] [2021-01-26 14:45:19,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-01-26 14:45:19,278 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1682215820, now seen corresponding path program 37 times [2021-01-26 14:45:19,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:19,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099375120] [2021-01-26 14:45:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:19,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099375120] [2021-01-26 14:45:19,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425750054] [2021-01-26 14:45:19,485 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 [2021-01-26 14:45:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:19,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:19,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:19,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:19,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:19,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-26 14:45:19,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298396335] [2021-01-26 14:45:19,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-26 14:45:19,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-26 14:45:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:45:19,613 INFO L87 Difference]: Start difference. First operand 6530 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:20,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:20,063 INFO L93 Difference]: Finished difference Result 6850 states and 15710 transitions. [2021-01-26 14:45:20,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:45:20,064 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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 76 [2021-01-26 14:45:20,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:20,070 INFO L225 Difference]: With dead ends: 6850 [2021-01-26 14:45:20,071 INFO L226 Difference]: Without dead ends: 6580 [2021-01-26 14:45:20,071 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-01-26 14:45:20,071 INFO L78 Accepts]: Start accepts. Automaton has 6580 states. Word has length 76 [2021-01-26 14:45:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:20,072 INFO L481 AbstractCegarLoop]: Abstraction has 6580 states. [2021-01-26 14:45:20,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6580 states. [2021-01-26 14:45:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:20,081 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:20,082 INFO L504 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] [2021-01-26 14:45:20,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:20,295 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:20,296 INFO L82 PathProgramCache]: Analyzing trace with hash 247870558, now seen corresponding path program 38 times [2021-01-26 14:45:20,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:20,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833518734] [2021-01-26 14:45:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:20,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833518734] [2021-01-26 14:45:20,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400284091] [2021-01-26 14:45:20,548 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 [2021-01-26 14:45:20,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:20,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:20,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:20,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:20,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:20,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:20,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:20,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-26 14:45:20,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772022096] [2021-01-26 14:45:20,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:20,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:20,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:20,722 INFO L87 Difference]: Start difference. First operand 6580 states. 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) [2021-01-26 14:45:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:21,268 INFO L93 Difference]: Finished difference Result 6900 states and 15810 transitions. [2021-01-26 14:45:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:45:21,268 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 [2021-01-26 14:45:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:21,276 INFO L225 Difference]: With dead ends: 6900 [2021-01-26 14:45:21,277 INFO L226 Difference]: Without dead ends: 6630 [2021-01-26 14:45:21,277 INFO L769 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 [2021-01-26 14:45:21,277 INFO L78 Accepts]: Start accepts. Automaton has 6630 states. Word has length 76 [2021-01-26 14:45:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:21,277 INFO L481 AbstractCegarLoop]: Abstraction has 6630 states. [2021-01-26 14:45:21,278 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) [2021-01-26 14:45:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states. [2021-01-26 14:45:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:21,284 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:21,284 INFO L504 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] [2021-01-26 14:45:21,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-26 14:45:21,485 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:21,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2074066552, now seen corresponding path program 39 times [2021-01-26 14:45:21,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:21,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644206769] [2021-01-26 14:45:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:21,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644206769] [2021-01-26 14:45:21,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232117314] [2021-01-26 14:45:21,704 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 [2021-01-26 14:45:21,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-26 14:45:21,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:21,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:21,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:21,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:21,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:21,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-26 14:45:21,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058932226] [2021-01-26 14:45:21,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-26 14:45:21,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-26 14:45:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:45:21,908 INFO L87 Difference]: Start difference. First operand 6630 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:22,535 INFO L93 Difference]: Finished difference Result 6950 states and 15910 transitions. [2021-01-26 14:45:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-26 14:45:22,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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 76 [2021-01-26 14:45:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:22,545 INFO L225 Difference]: With dead ends: 6950 [2021-01-26 14:45:22,546 INFO L226 Difference]: Without dead ends: 6680 [2021-01-26 14:45:22,548 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-01-26 14:45:22,548 INFO L78 Accepts]: Start accepts. Automaton has 6680 states. Word has length 76 [2021-01-26 14:45:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:22,549 INFO L481 AbstractCegarLoop]: Abstraction has 6680 states. [2021-01-26 14:45:22,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 6680 states. [2021-01-26 14:45:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:22,561 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:22,562 INFO L504 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] [2021-01-26 14:45:22,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:22,776 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:22,777 INFO L82 PathProgramCache]: Analyzing trace with hash -59228856, now seen corresponding path program 40 times [2021-01-26 14:45:22,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:22,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736302559] [2021-01-26 14:45:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:22,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736302559] [2021-01-26 14:45:22,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385632343] [2021-01-26 14:45:22,991 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 [2021-01-26 14:45:23,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:23,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:23,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:23,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:23,087 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:23,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:23,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:23,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-26 14:45:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480779440] [2021-01-26 14:45:23,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:23,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:23,133 INFO L87 Difference]: Start difference. First operand 6680 states. 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) [2021-01-26 14:45:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:23,738 INFO L93 Difference]: Finished difference Result 7000 states and 16010 transitions. [2021-01-26 14:45:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:45:23,739 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 [2021-01-26 14:45:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:23,748 INFO L225 Difference]: With dead ends: 7000 [2021-01-26 14:45:23,748 INFO L226 Difference]: Without dead ends: 6730 [2021-01-26 14:45:23,749 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-01-26 14:45:23,749 INFO L78 Accepts]: Start accepts. Automaton has 6730 states. Word has length 76 [2021-01-26 14:45:23,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:23,749 INFO L481 AbstractCegarLoop]: Abstraction has 6730 states. [2021-01-26 14:45:23,749 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) [2021-01-26 14:45:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states. [2021-01-26 14:45:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:23,757 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:23,757 INFO L504 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] [2021-01-26 14:45:23,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-26 14:45:23,974 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:23,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1831372022, now seen corresponding path program 41 times [2021-01-26 14:45:23,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:23,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347240693] [2021-01-26 14:45:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:24,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347240693] [2021-01-26 14:45:24,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413920409] [2021-01-26 14:45:24,160 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 [2021-01-26 14:45:24,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-26 14:45:24,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:24,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:24,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:24,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:24,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-26 14:45:24,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400340595] [2021-01-26 14:45:24,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-26 14:45:24,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-26 14:45:24,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:45:24,299 INFO L87 Difference]: Start difference. First operand 6730 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:24,508 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-01-26 14:45:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:24,890 INFO L93 Difference]: Finished difference Result 7050 states and 16110 transitions. [2021-01-26 14:45:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:45:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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 76 [2021-01-26 14:45:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:24,897 INFO L225 Difference]: With dead ends: 7050 [2021-01-26 14:45:24,897 INFO L226 Difference]: Without dead ends: 6780 [2021-01-26 14:45:24,898 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-01-26 14:45:24,898 INFO L78 Accepts]: Start accepts. Automaton has 6780 states. Word has length 76 [2021-01-26 14:45:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:24,898 INFO L481 AbstractCegarLoop]: Abstraction has 6780 states. [2021-01-26 14:45:24,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6780 states. [2021-01-26 14:45:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:24,904 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:24,904 INFO L504 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] [2021-01-26 14:45:25,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-26 14:45:25,105 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1241888826, now seen corresponding path program 42 times [2021-01-26 14:45:25,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:25,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175974300] [2021-01-26 14:45:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:25,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175974300] [2021-01-26 14:45:25,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580825471] [2021-01-26 14:45:25,313 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 [2021-01-26 14:45:25,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-26 14:45:25,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:25,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:25,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:25,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:25,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:25,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:25,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-26 14:45:25,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644655746] [2021-01-26 14:45:25,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:25,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:25,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:25,471 INFO L87 Difference]: Start difference. First operand 6780 states. 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) [2021-01-26 14:45:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:26,163 INFO L93 Difference]: Finished difference Result 7100 states and 16210 transitions. [2021-01-26 14:45:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:45:26,163 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 [2021-01-26 14:45:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:26,171 INFO L225 Difference]: With dead ends: 7100 [2021-01-26 14:45:26,171 INFO L226 Difference]: Without dead ends: 6830 [2021-01-26 14:45:26,171 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:45:26,171 INFO L78 Accepts]: Start accepts. Automaton has 6830 states. Word has length 76 [2021-01-26 14:45:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:26,172 INFO L481 AbstractCegarLoop]: Abstraction has 6830 states. [2021-01-26 14:45:26,172 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) [2021-01-26 14:45:26,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states. [2021-01-26 14:45:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:26,177 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:26,178 INFO L504 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] [2021-01-26 14:45:26,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:26,378 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1963045108, now seen corresponding path program 43 times [2021-01-26 14:45:26,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:26,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583206074] [2021-01-26 14:45:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:26,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583206074] [2021-01-26 14:45:26,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389291998] [2021-01-26 14:45:26,563 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 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 [2021-01-26 14:45:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:26,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:26,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:26,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:26,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:26,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-26 14:45:26,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422068874] [2021-01-26 14:45:26,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-26 14:45:26,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:26,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-26 14:45:26,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:45:26,689 INFO L87 Difference]: Start difference. First operand 6830 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:27,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:27,241 INFO L93 Difference]: Finished difference Result 7150 states and 16310 transitions. [2021-01-26 14:45:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:45:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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 76 [2021-01-26 14:45:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:27,248 INFO L225 Difference]: With dead ends: 7150 [2021-01-26 14:45:27,249 INFO L226 Difference]: Without dead ends: 6880 [2021-01-26 14:45:27,249 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-01-26 14:45:27,249 INFO L78 Accepts]: Start accepts. Automaton has 6880 states. Word has length 76 [2021-01-26 14:45:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:27,249 INFO L481 AbstractCegarLoop]: Abstraction has 6880 states. [2021-01-26 14:45:27,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6880 states. [2021-01-26 14:45:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:27,255 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:27,255 INFO L504 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] [2021-01-26 14:45:27,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-01-26 14:45:27,456 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1412319292, now seen corresponding path program 44 times [2021-01-26 14:45:27,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:27,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382435385] [2021-01-26 14:45:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:27,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382435385] [2021-01-26 14:45:27,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620557425] [2021-01-26 14:45:27,651 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 [2021-01-26 14:45:27,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:27,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:27,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:27,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:27,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:27,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:27,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:27,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-26 14:45:27,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124438769] [2021-01-26 14:45:27,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:27,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:27,802 INFO L87 Difference]: Start difference. First operand 6880 states. 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) [2021-01-26 14:45:28,646 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-26 14:45:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:28,747 INFO L93 Difference]: Finished difference Result 7584 states and 17434 transitions. [2021-01-26 14:45:28,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:45:28,748 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 [2021-01-26 14:45:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:28,753 INFO L225 Difference]: With dead ends: 7584 [2021-01-26 14:45:28,754 INFO L226 Difference]: Without dead ends: 7000 [2021-01-26 14:45:28,754 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2021-01-26 14:45:28,754 INFO L78 Accepts]: Start accepts. Automaton has 7000 states. Word has length 76 [2021-01-26 14:45:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:28,754 INFO L481 AbstractCegarLoop]: Abstraction has 7000 states. [2021-01-26 14:45:28,754 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) [2021-01-26 14:45:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states. [2021-01-26 14:45:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:28,759 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:28,759 INFO L504 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] [2021-01-26 14:45:28,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:28,961 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:28,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1060243374, now seen corresponding path program 45 times [2021-01-26 14:45:28,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:28,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669358711] [2021-01-26 14:45:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:29,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669358711] [2021-01-26 14:45:29,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688702008] [2021-01-26 14:45:29,145 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 [2021-01-26 14:45:29,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-26 14:45:29,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:29,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:45:29,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:29,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:29,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:29,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-26 14:45:29,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971431347] [2021-01-26 14:45:29,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-26 14:45:29,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-26 14:45:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:45:29,274 INFO L87 Difference]: Start difference. First operand 7000 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:29,876 INFO L93 Difference]: Finished difference Result 8472 states and 19964 transitions. [2021-01-26 14:45:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:45:29,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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 76 [2021-01-26 14:45:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:29,885 INFO L225 Difference]: With dead ends: 8472 [2021-01-26 14:45:29,885 INFO L226 Difference]: Without dead ends: 8187 [2021-01-26 14:45:29,885 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:45:29,885 INFO L78 Accepts]: Start accepts. Automaton has 8187 states. Word has length 76 [2021-01-26 14:45:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:29,886 INFO L481 AbstractCegarLoop]: Abstraction has 8187 states. [2021-01-26 14:45:29,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 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) [2021-01-26 14:45:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8187 states. [2021-01-26 14:45:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:45:29,891 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:29,891 INFO L504 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] [2021-01-26 14:45:30,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:30,092 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1063216604, now seen corresponding path program 46 times [2021-01-26 14:45:30,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:30,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213390392] [2021-01-26 14:45:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:30,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213390392] [2021-01-26 14:45:30,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530102273] [2021-01-26 14:45:30,274 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 [2021-01-26 14:45:30,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:30,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:30,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:30,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:30,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:30,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:30,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:30,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-26 14:45:30,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291043681] [2021-01-26 14:45:30,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:30,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:30,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:30,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:30,424 INFO L87 Difference]: Start difference. First operand 8187 states. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:31,342 INFO L93 Difference]: Finished difference Result 8195 states and 18881 transitions. [2021-01-26 14:45:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:45:31,343 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2021-01-26 14:45:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:31,350 INFO L225 Difference]: With dead ends: 8195 [2021-01-26 14:45:31,350 INFO L226 Difference]: Without dead ends: 7510 [2021-01-26 14:45:31,351 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:45:31,351 INFO L78 Accepts]: Start accepts. Automaton has 7510 states. Word has length 76 [2021-01-26 14:45:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:31,351 INFO L481 AbstractCegarLoop]: Abstraction has 7510 states. [2021-01-26 14:45:31,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states. [2021-01-26 14:45:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:31,359 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:31,359 INFO L504 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] [2021-01-26 14:45:31,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-01-26 14:45:31,560 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash -298810531, now seen corresponding path program 47 times [2021-01-26 14:45:31,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:31,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520609582] [2021-01-26 14:45:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:31,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520609582] [2021-01-26 14:45:31,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437575204] [2021-01-26 14:45:31,794 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 [2021-01-26 14:45:31,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-26 14:45:31,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:31,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:31,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:31,910 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:31,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:31,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-26 14:45:31,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191686210] [2021-01-26 14:45:31,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:31,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:31,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:31,926 INFO L87 Difference]: Start difference. First operand 7510 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:32,290 INFO L93 Difference]: Finished difference Result 7830 states and 17900 transitions. [2021-01-26 14:45:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:45:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-01-26 14:45:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:32,299 INFO L225 Difference]: With dead ends: 7830 [2021-01-26 14:45:32,299 INFO L226 Difference]: Without dead ends: 7560 [2021-01-26 14:45:32,299 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2021-01-26 14:45:32,299 INFO L78 Accepts]: Start accepts. Automaton has 7560 states. Word has length 81 [2021-01-26 14:45:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:32,300 INFO L481 AbstractCegarLoop]: Abstraction has 7560 states. [2021-01-26 14:45:32,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7560 states. [2021-01-26 14:45:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:32,306 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:32,306 INFO L504 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] [2021-01-26 14:45:32,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:32,507 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:32,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1053083055, now seen corresponding path program 48 times [2021-01-26 14:45:32,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:32,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445374110] [2021-01-26 14:45:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:32,772 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-26 14:45:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:32,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445374110] [2021-01-26 14:45:32,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32963689] [2021-01-26 14:45:32,893 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 [2021-01-26 14:45:32,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-26 14:45:32,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:32,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:32,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:32,992 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:33,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:33,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:33,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-26 14:45:33,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916713781] [2021-01-26 14:45:33,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:33,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:33,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:33,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:33,047 INFO L87 Difference]: Start difference. First operand 7560 states. 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) [2021-01-26 14:45:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:33,494 INFO L93 Difference]: Finished difference Result 7880 states and 18000 transitions. [2021-01-26 14:45:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-26 14:45:33,494 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 [2021-01-26 14:45:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:33,502 INFO L225 Difference]: With dead ends: 7880 [2021-01-26 14:45:33,502 INFO L226 Difference]: Without dead ends: 7610 [2021-01-26 14:45:33,502 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2021-01-26 14:45:33,502 INFO L78 Accepts]: Start accepts. Automaton has 7610 states. Word has length 81 [2021-01-26 14:45:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:33,503 INFO L481 AbstractCegarLoop]: Abstraction has 7610 states. [2021-01-26 14:45:33,503 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) [2021-01-26 14:45:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7610 states. [2021-01-26 14:45:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:33,509 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:33,509 INFO L504 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] [2021-01-26 14:45:33,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-01-26 14:45:33,710 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:33,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:33,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1745619127, now seen corresponding path program 49 times [2021-01-26 14:45:33,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:33,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965444489] [2021-01-26 14:45:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:33,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965444489] [2021-01-26 14:45:33,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498806984] [2021-01-26 14:45:33,946 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 [2021-01-26 14:45:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:34,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:34,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:34,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:34,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:34,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-26 14:45:34,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766718613] [2021-01-26 14:45:34,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:34,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:34,078 INFO L87 Difference]: Start difference. First operand 7610 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:34,540 INFO L93 Difference]: Finished difference Result 7930 states and 18100 transitions. [2021-01-26 14:45:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:45:34,541 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-01-26 14:45:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:34,548 INFO L225 Difference]: With dead ends: 7930 [2021-01-26 14:45:34,548 INFO L226 Difference]: Without dead ends: 7660 [2021-01-26 14:45:34,549 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-01-26 14:45:34,549 INFO L78 Accepts]: Start accepts. Automaton has 7660 states. Word has length 81 [2021-01-26 14:45:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:34,549 INFO L481 AbstractCegarLoop]: Abstraction has 7660 states. [2021-01-26 14:45:34,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states. [2021-01-26 14:45:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:34,555 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:34,555 INFO L504 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] [2021-01-26 14:45:34,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-01-26 14:45:34,756 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1956131353, now seen corresponding path program 50 times [2021-01-26 14:45:34,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:34,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053029347] [2021-01-26 14:45:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:35,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053029347] [2021-01-26 14:45:35,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093483551] [2021-01-26 14:45:35,011 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 [2021-01-26 14:45:35,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:35,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:35,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:35,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:35,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:35,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:35,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:35,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-26 14:45:35,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100827702] [2021-01-26 14:45:35,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:35,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:35,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:35,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:35,173 INFO L87 Difference]: Start difference. First operand 7660 states. 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) [2021-01-26 14:45:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:35,752 INFO L93 Difference]: Finished difference Result 8030 states and 18300 transitions. [2021-01-26 14:45:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:45:35,753 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 [2021-01-26 14:45:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:35,761 INFO L225 Difference]: With dead ends: 8030 [2021-01-26 14:45:35,761 INFO L226 Difference]: Without dead ends: 7760 [2021-01-26 14:45:35,762 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-01-26 14:45:35,762 INFO L78 Accepts]: Start accepts. Automaton has 7760 states. Word has length 81 [2021-01-26 14:45:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:35,762 INFO L481 AbstractCegarLoop]: Abstraction has 7760 states. [2021-01-26 14:45:35,762 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) [2021-01-26 14:45:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states. [2021-01-26 14:45:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:35,773 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:35,773 INFO L504 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] [2021-01-26 14:45:35,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-01-26 14:45:35,974 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1783445575, now seen corresponding path program 51 times [2021-01-26 14:45:35,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:35,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700299605] [2021-01-26 14:45:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:36,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700299605] [2021-01-26 14:45:36,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008082997] [2021-01-26 14:45:36,195 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 [2021-01-26 14:45:36,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-26 14:45:36,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:36,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:36,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:36,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:36,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:36,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-26 14:45:36,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696211362] [2021-01-26 14:45:36,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:36,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:36,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:36,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:36,322 INFO L87 Difference]: Start difference. First operand 7760 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:36,640 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-26 14:45:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:36,994 INFO L93 Difference]: Finished difference Result 8080 states and 18400 transitions. [2021-01-26 14:45:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:45:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-01-26 14:45:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:37,003 INFO L225 Difference]: With dead ends: 8080 [2021-01-26 14:45:37,003 INFO L226 Difference]: Without dead ends: 7810 [2021-01-26 14:45:37,003 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-01-26 14:45:37,003 INFO L78 Accepts]: Start accepts. Automaton has 7810 states. Word has length 81 [2021-01-26 14:45:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:37,004 INFO L481 AbstractCegarLoop]: Abstraction has 7810 states. [2021-01-26 14:45:37,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states. [2021-01-26 14:45:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:37,014 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:37,014 INFO L504 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] [2021-01-26 14:45:37,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-01-26 14:45:37,215 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash -349849833, now seen corresponding path program 52 times [2021-01-26 14:45:37,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:37,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18652488] [2021-01-26 14:45:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:37,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18652488] [2021-01-26 14:45:37,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151368298] [2021-01-26 14:45:37,467 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 [2021-01-26 14:45:37,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:37,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:37,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:45:37,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:37,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:37,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:37,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:37,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-26 14:45:37,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065585593] [2021-01-26 14:45:37,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:37,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:37,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:37,644 INFO L87 Difference]: Start difference. First operand 7810 states. 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) [2021-01-26 14:45:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:38,342 INFO L93 Difference]: Finished difference Result 8130 states and 18500 transitions. [2021-01-26 14:45:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:45:38,343 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 [2021-01-26 14:45:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:38,352 INFO L225 Difference]: With dead ends: 8130 [2021-01-26 14:45:38,352 INFO L226 Difference]: Without dead ends: 7860 [2021-01-26 14:45:38,352 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-01-26 14:45:38,353 INFO L78 Accepts]: Start accepts. Automaton has 7860 states. Word has length 81 [2021-01-26 14:45:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:38,353 INFO L481 AbstractCegarLoop]: Abstraction has 7860 states. [2021-01-26 14:45:38,353 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) [2021-01-26 14:45:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7860 states. [2021-01-26 14:45:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:38,365 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:38,365 INFO L504 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] [2021-01-26 14:45:38,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:38,579 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1540751045, now seen corresponding path program 53 times [2021-01-26 14:45:38,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:38,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541342806] [2021-01-26 14:45:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:38,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541342806] [2021-01-26 14:45:38,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008300090] [2021-01-26 14:45:38,826 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 [2021-01-26 14:45:38,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-26 14:45:38,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:38,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:38,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:38,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:38,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:38,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-26 14:45:38,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930725888] [2021-01-26 14:45:38,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:38,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:38,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:38,974 INFO L87 Difference]: Start difference. First operand 7860 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:39,572 INFO L93 Difference]: Finished difference Result 8180 states and 18600 transitions. [2021-01-26 14:45:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:45:39,573 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-01-26 14:45:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:39,581 INFO L225 Difference]: With dead ends: 8180 [2021-01-26 14:45:39,581 INFO L226 Difference]: Without dead ends: 7910 [2021-01-26 14:45:39,581 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-01-26 14:45:39,582 INFO L78 Accepts]: Start accepts. Automaton has 7910 states. Word has length 81 [2021-01-26 14:45:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:39,582 INFO L481 AbstractCegarLoop]: Abstraction has 7910 states. [2021-01-26 14:45:39,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7910 states. [2021-01-26 14:45:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:39,589 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:39,590 INFO L504 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] [2021-01-26 14:45:39,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:39,791 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1532509803, now seen corresponding path program 54 times [2021-01-26 14:45:39,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:39,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838254417] [2021-01-26 14:45:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:39,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838254417] [2021-01-26 14:45:39,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055810492] [2021-01-26 14:45:39,998 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 [2021-01-26 14:45:40,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-26 14:45:40,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:40,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:40,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:40,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:40,138 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:40,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:40,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-26 14:45:40,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591044233] [2021-01-26 14:45:40,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:40,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:40,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:40,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:40,151 INFO L87 Difference]: Start difference. First operand 7910 states. 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) [2021-01-26 14:45:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:40,904 INFO L93 Difference]: Finished difference Result 8230 states and 18700 transitions. [2021-01-26 14:45:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:45:40,905 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 [2021-01-26 14:45:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:40,912 INFO L225 Difference]: With dead ends: 8230 [2021-01-26 14:45:40,913 INFO L226 Difference]: Without dead ends: 7960 [2021-01-26 14:45:40,913 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:45:40,913 INFO L78 Accepts]: Start accepts. Automaton has 7960 states. Word has length 81 [2021-01-26 14:45:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:40,913 INFO L481 AbstractCegarLoop]: Abstraction has 7960 states. [2021-01-26 14:45:40,914 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) [2021-01-26 14:45:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states. [2021-01-26 14:45:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:40,920 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:40,920 INFO L504 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] [2021-01-26 14:45:41,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:41,123 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:41,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1672424131, now seen corresponding path program 55 times [2021-01-26 14:45:41,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:41,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18459582] [2021-01-26 14:45:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:41,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18459582] [2021-01-26 14:45:41,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030531654] [2021-01-26 14:45:41,441 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 [2021-01-26 14:45:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:41,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:41,554 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:41,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:41,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-26 14:45:41,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794152008] [2021-01-26 14:45:41,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:41,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:41,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:41,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:41,566 INFO L87 Difference]: Start difference. First operand 7960 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:42,197 INFO L93 Difference]: Finished difference Result 8280 states and 18800 transitions. [2021-01-26 14:45:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:45:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-01-26 14:45:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:42,205 INFO L225 Difference]: With dead ends: 8280 [2021-01-26 14:45:42,205 INFO L226 Difference]: Without dead ends: 8010 [2021-01-26 14:45:42,206 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:45:42,206 INFO L78 Accepts]: Start accepts. Automaton has 8010 states. Word has length 81 [2021-01-26 14:45:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:42,206 INFO L481 AbstractCegarLoop]: Abstraction has 8010 states. [2021-01-26 14:45:42,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states. [2021-01-26 14:45:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:42,213 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:42,214 INFO L504 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] [2021-01-26 14:45:42,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-01-26 14:45:42,415 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:42,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1702940269, now seen corresponding path program 56 times [2021-01-26 14:45:42,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:42,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061884995] [2021-01-26 14:45:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:42,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061884995] [2021-01-26 14:45:42,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104248791] [2021-01-26 14:45:42,628 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 [2021-01-26 14:45:42,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:42,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:42,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:42,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:42,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:42,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:42,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:42,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-26 14:45:42,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812503575] [2021-01-26 14:45:42,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:42,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:42,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:42,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:42,781 INFO L87 Difference]: Start difference. First operand 8010 states. 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) [2021-01-26 14:45:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:43,632 INFO L93 Difference]: Finished difference Result 8370 states and 18980 transitions. [2021-01-26 14:45:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:45:43,633 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 [2021-01-26 14:45:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:43,641 INFO L225 Difference]: With dead ends: 8370 [2021-01-26 14:45:43,642 INFO L226 Difference]: Without dead ends: 8070 [2021-01-26 14:45:43,642 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=440, Invalid=1282, Unknown=0, NotChecked=0, Total=1722 [2021-01-26 14:45:43,642 INFO L78 Accepts]: Start accepts. Automaton has 8070 states. Word has length 81 [2021-01-26 14:45:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:43,642 INFO L481 AbstractCegarLoop]: Abstraction has 8070 states. [2021-01-26 14:45:43,643 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) [2021-01-26 14:45:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8070 states. [2021-01-26 14:45:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:43,650 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:43,650 INFO L504 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] [2021-01-26 14:45:43,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:43,851 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:43,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1350864351, now seen corresponding path program 57 times [2021-01-26 14:45:43,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:43,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058232707] [2021-01-26 14:45:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:44,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058232707] [2021-01-26 14:45:44,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713276837] [2021-01-26 14:45:44,047 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 [2021-01-26 14:45:44,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-26 14:45:44,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:44,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:45:44,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:44,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:44,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:44,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-26 14:45:44,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328245667] [2021-01-26 14:45:44,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-26 14:45:44,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-26 14:45:44,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:45:44,189 INFO L87 Difference]: Start difference. First operand 8070 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:44,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:44,924 INFO L93 Difference]: Finished difference Result 9542 states and 22284 transitions. [2021-01-26 14:45:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:45:44,924 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-01-26 14:45:44,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:44,933 INFO L225 Difference]: With dead ends: 9542 [2021-01-26 14:45:44,933 INFO L226 Difference]: Without dead ends: 9257 [2021-01-26 14:45:44,934 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-01-26 14:45:44,934 INFO L78 Accepts]: Start accepts. Automaton has 9257 states. Word has length 81 [2021-01-26 14:45:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:44,934 INFO L481 AbstractCegarLoop]: Abstraction has 9257 states. [2021-01-26 14:45:44,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 9257 states. [2021-01-26 14:45:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-26 14:45:44,941 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:44,941 INFO L504 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] [2021-01-26 14:45:45,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-01-26 14:45:45,142 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:45,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:45,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1353837581, now seen corresponding path program 58 times [2021-01-26 14:45:45,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:45,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79530300] [2021-01-26 14:45:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:45,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79530300] [2021-01-26 14:45:45,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420261261] [2021-01-26 14:45:45,354 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 [2021-01-26 14:45:45,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:45,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:45,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:45:45,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:45,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:45,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:45,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:45,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-01-26 14:45:45,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504599908] [2021-01-26 14:45:45,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:45,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:45,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:45,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:45,493 INFO L87 Difference]: Start difference. First operand 9257 states. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:46,641 INFO L93 Difference]: Finished difference Result 9065 states and 20721 transitions. [2021-01-26 14:45:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:45:46,641 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2021-01-26 14:45:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:46,649 INFO L225 Difference]: With dead ends: 9065 [2021-01-26 14:45:46,649 INFO L226 Difference]: Without dead ends: 8380 [2021-01-26 14:45:46,650 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2021-01-26 14:45:46,650 INFO L78 Accepts]: Start accepts. Automaton has 8380 states. Word has length 81 [2021-01-26 14:45:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:46,650 INFO L481 AbstractCegarLoop]: Abstraction has 8380 states. [2021-01-26 14:45:46,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8380 states. [2021-01-26 14:45:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:46,658 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:46,658 INFO L504 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] [2021-01-26 14:45:46,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:46,872 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1585971837, now seen corresponding path program 59 times [2021-01-26 14:45:46,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:46,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397956696] [2021-01-26 14:45:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:47,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397956696] [2021-01-26 14:45:47,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279139089] [2021-01-26 14:45:47,136 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 [2021-01-26 14:45:47,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-26 14:45:47,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:47,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:47,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:47,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:47,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:47,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:45:47,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859586903] [2021-01-26 14:45:47,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:47,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:47,279 INFO L87 Difference]: Start difference. First operand 8380 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:47,711 INFO L93 Difference]: Finished difference Result 8700 states and 19740 transitions. [2021-01-26 14:45:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:45:47,711 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:45:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:47,722 INFO L225 Difference]: With dead ends: 8700 [2021-01-26 14:45:47,722 INFO L226 Difference]: Without dead ends: 8430 [2021-01-26 14:45:47,723 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-01-26 14:45:47,723 INFO L78 Accepts]: Start accepts. Automaton has 8430 states. Word has length 86 [2021-01-26 14:45:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:47,723 INFO L481 AbstractCegarLoop]: Abstraction has 8430 states. [2021-01-26 14:45:47,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states. [2021-01-26 14:45:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:47,733 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:47,734 INFO L504 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] [2021-01-26 14:45:47,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-01-26 14:45:47,943 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:47,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1357101873, now seen corresponding path program 60 times [2021-01-26 14:45:47,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:47,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009432255] [2021-01-26 14:45:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:48,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009432255] [2021-01-26 14:45:48,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776472615] [2021-01-26 14:45:48,227 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 [2021-01-26 14:45:48,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-26 14:45:48,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:48,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:48,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:48,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:48,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:48,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:48,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-26 14:45:48,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493249684] [2021-01-26 14:45:48,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:45:48,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:48,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:45:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:45:48,396 INFO L87 Difference]: Start difference. First operand 8430 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:48,953 INFO L93 Difference]: Finished difference Result 8750 states and 19840 transitions. [2021-01-26 14:45:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:45:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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 86 [2021-01-26 14:45:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:48,962 INFO L225 Difference]: With dead ends: 8750 [2021-01-26 14:45:48,962 INFO L226 Difference]: Without dead ends: 8480 [2021-01-26 14:45:48,963 INFO L769 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 [2021-01-26 14:45:48,963 INFO L78 Accepts]: Start accepts. Automaton has 8480 states. Word has length 86 [2021-01-26 14:45:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:48,963 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states. [2021-01-26 14:45:48,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states. [2021-01-26 14:45:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:48,970 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:48,970 INFO L504 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] [2021-01-26 14:45:49,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:49,171 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash 139163241, now seen corresponding path program 61 times [2021-01-26 14:45:49,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:49,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864663957] [2021-01-26 14:45:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:49,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864663957] [2021-01-26 14:45:49,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944224423] [2021-01-26 14:45:49,426 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 [2021-01-26 14:45:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:49,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:49,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:49,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:49,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:45:49,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849917423] [2021-01-26 14:45:49,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:49,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:49,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:49,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:49,553 INFO L87 Difference]: Start difference. First operand 8480 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:50,076 INFO L93 Difference]: Finished difference Result 8800 states and 19940 transitions. [2021-01-26 14:45:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:45:50,077 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:45:50,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:50,086 INFO L225 Difference]: With dead ends: 8800 [2021-01-26 14:45:50,086 INFO L226 Difference]: Without dead ends: 8530 [2021-01-26 14:45:50,086 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-01-26 14:45:50,086 INFO L78 Accepts]: Start accepts. Automaton has 8530 states. Word has length 86 [2021-01-26 14:45:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:50,086 INFO L481 AbstractCegarLoop]: Abstraction has 8530 states. [2021-01-26 14:45:50,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8530 states. [2021-01-26 14:45:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:50,093 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:50,094 INFO L504 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] [2021-01-26 14:45:50,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-01-26 14:45:50,308 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:50,309 INFO L82 PathProgramCache]: Analyzing trace with hash -454053575, now seen corresponding path program 62 times [2021-01-26 14:45:50,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:50,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469320214] [2021-01-26 14:45:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:50,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469320214] [2021-01-26 14:45:50,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267079909] [2021-01-26 14:45:50,717 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 [2021-01-26 14:45:50,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:50,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:50,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:50,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:50,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:50,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:50,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:50,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-26 14:45:50,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586712324] [2021-01-26 14:45:50,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:45:50,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:50,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:45:50,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:45:50,873 INFO L87 Difference]: Start difference. First operand 8530 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:51,561 INFO L93 Difference]: Finished difference Result 8850 states and 20040 transitions. [2021-01-26 14:45:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:45:51,562 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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 86 [2021-01-26 14:45:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:51,570 INFO L225 Difference]: With dead ends: 8850 [2021-01-26 14:45:51,571 INFO L226 Difference]: Without dead ends: 8580 [2021-01-26 14:45:51,571 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-01-26 14:45:51,571 INFO L78 Accepts]: Start accepts. Automaton has 8580 states. Word has length 86 [2021-01-26 14:45:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:51,571 INFO L481 AbstractCegarLoop]: Abstraction has 8580 states. [2021-01-26 14:45:51,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8580 states. [2021-01-26 14:45:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:51,579 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:51,579 INFO L504 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] [2021-01-26 14:45:51,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-01-26 14:45:51,780 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:51,780 INFO L82 PathProgramCache]: Analyzing trace with hash -626739353, now seen corresponding path program 63 times [2021-01-26 14:45:51,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:51,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640381839] [2021-01-26 14:45:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:52,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640381839] [2021-01-26 14:45:52,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741194426] [2021-01-26 14:45:52,003 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 [2021-01-26 14:45:52,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-26 14:45:52,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:52,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:52,125 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:52,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:52,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:45:52,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464679532] [2021-01-26 14:45:52,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:52,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:52,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:52,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:52,140 INFO L87 Difference]: Start difference. First operand 8580 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:52,721 INFO L93 Difference]: Finished difference Result 8900 states and 20140 transitions. [2021-01-26 14:45:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:45:52,721 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:45:52,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:52,730 INFO L225 Difference]: With dead ends: 8900 [2021-01-26 14:45:52,730 INFO L226 Difference]: Without dead ends: 8630 [2021-01-26 14:45:52,730 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:45:52,730 INFO L78 Accepts]: Start accepts. Automaton has 8630 states. Word has length 86 [2021-01-26 14:45:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:52,730 INFO L481 AbstractCegarLoop]: Abstraction has 8630 states. [2021-01-26 14:45:52,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states. [2021-01-26 14:45:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:52,741 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:52,741 INFO L504 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] [2021-01-26 14:45:52,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:52,957 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1534932535, now seen corresponding path program 64 times [2021-01-26 14:45:52,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:52,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776306195] [2021-01-26 14:45:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:53,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776306195] [2021-01-26 14:45:53,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359634143] [2021-01-26 14:45:53,195 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 [2021-01-26 14:45:53,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:45:53,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:53,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:45:53,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:53,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:53,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:53,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:53,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-26 14:45:53,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072255684] [2021-01-26 14:45:53,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:45:53,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:53,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:45:53,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:45:53,352 INFO L87 Difference]: Start difference. First operand 8630 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:54,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:54,152 INFO L93 Difference]: Finished difference Result 8950 states and 20240 transitions. [2021-01-26 14:45:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:45:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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 86 [2021-01-26 14:45:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:54,162 INFO L225 Difference]: With dead ends: 8950 [2021-01-26 14:45:54,162 INFO L226 Difference]: Without dead ends: 8680 [2021-01-26 14:45:54,162 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2021-01-26 14:45:54,162 INFO L78 Accepts]: Start accepts. Automaton has 8680 states. Word has length 86 [2021-01-26 14:45:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:54,162 INFO L481 AbstractCegarLoop]: Abstraction has 8680 states. [2021-01-26 14:45:54,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states. [2021-01-26 14:45:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:54,170 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:54,170 INFO L504 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] [2021-01-26 14:45:54,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:54,371 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash -869433883, now seen corresponding path program 65 times [2021-01-26 14:45:54,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:54,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133501239] [2021-01-26 14:45:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:54,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133501239] [2021-01-26 14:45:54,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416308929] [2021-01-26 14:45:54,603 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 [2021-01-26 14:45:54,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-26 14:45:54,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:54,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:54,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:54,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:54,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:45:54,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814053211] [2021-01-26 14:45:54,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:54,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:54,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:54,747 INFO L87 Difference]: Start difference. First operand 8680 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:55,530 INFO L93 Difference]: Finished difference Result 9000 states and 20340 transitions. [2021-01-26 14:45:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:45:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:45:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:55,539 INFO L225 Difference]: With dead ends: 9000 [2021-01-26 14:45:55,540 INFO L226 Difference]: Without dead ends: 8730 [2021-01-26 14:45:55,540 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-01-26 14:45:55,540 INFO L78 Accepts]: Start accepts. Automaton has 8730 states. Word has length 86 [2021-01-26 14:45:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:55,540 INFO L481 AbstractCegarLoop]: Abstraction has 8730 states. [2021-01-26 14:45:55,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8730 states. [2021-01-26 14:45:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:55,552 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:55,552 INFO L504 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] [2021-01-26 14:45:55,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-01-26 14:45:55,753 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:55,754 INFO L82 PathProgramCache]: Analyzing trace with hash 352272565, now seen corresponding path program 66 times [2021-01-26 14:45:55,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:55,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592093301] [2021-01-26 14:45:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:56,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592093301] [2021-01-26 14:45:56,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465190387] [2021-01-26 14:45:56,017 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 [2021-01-26 14:45:56,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-26 14:45:56,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:56,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:56,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:56,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:56,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:56,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:56,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-26 14:45:56,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677073663] [2021-01-26 14:45:56,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:45:56,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:56,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:45:56,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:45:56,191 INFO L87 Difference]: Start difference. First operand 8730 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:57,172 INFO L93 Difference]: Finished difference Result 9050 states and 20440 transitions. [2021-01-26 14:45:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:45:57,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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 86 [2021-01-26 14:45:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:57,182 INFO L225 Difference]: With dead ends: 9050 [2021-01-26 14:45:57,182 INFO L226 Difference]: Without dead ends: 8780 [2021-01-26 14:45:57,182 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1363, Unknown=0, NotChecked=0, Total=1806 [2021-01-26 14:45:57,182 INFO L78 Accepts]: Start accepts. Automaton has 8780 states. Word has length 86 [2021-01-26 14:45:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:57,183 INFO L481 AbstractCegarLoop]: Abstraction has 8780 states. [2021-01-26 14:45:57,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:45:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states. [2021-01-26 14:45:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:57,193 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:57,193 INFO L504 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] [2021-01-26 14:45:57,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:45:57,394 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:57,394 INFO L82 PathProgramCache]: Analyzing trace with hash -737760797, now seen corresponding path program 67 times [2021-01-26 14:45:57,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:57,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829980653] [2021-01-26 14:45:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:57,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829980653] [2021-01-26 14:45:57,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109913293] [2021-01-26 14:45:57,636 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 [2021-01-26 14:45:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:57,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:57,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:57,769 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:57,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:57,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:45:57,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198605005] [2021-01-26 14:45:57,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:45:57,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:57,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:45:57,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:45:57,783 INFO L87 Difference]: Start difference. First operand 8780 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:58,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:45:58,517 INFO L93 Difference]: Finished difference Result 9100 states and 20540 transitions. [2021-01-26 14:45:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:45:58,518 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:45:58,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:45:58,527 INFO L225 Difference]: With dead ends: 9100 [2021-01-26 14:45:58,527 INFO L226 Difference]: Without dead ends: 8830 [2021-01-26 14:45:58,528 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2021-01-26 14:45:58,528 INFO L78 Accepts]: Start accepts. Automaton has 8830 states. Word has length 86 [2021-01-26 14:45:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:45:58,528 INFO L481 AbstractCegarLoop]: Abstraction has 8830 states. [2021-01-26 14:45:58,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:45:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 8830 states. [2021-01-26 14:45:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:45:58,536 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:45:58,536 INFO L504 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] [2021-01-26 14:45:58,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-01-26 14:45:58,737 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:45:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:45:58,738 INFO L82 PathProgramCache]: Analyzing trace with hash 181842099, now seen corresponding path program 68 times [2021-01-26 14:45:58,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:45:58,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209768208] [2021-01-26 14:45:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:45:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:45:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:58,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209768208] [2021-01-26 14:45:58,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655484762] [2021-01-26 14:45:58,967 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 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 [2021-01-26 14:45:59,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:45:59,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:45:59,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:45:59,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:45:59,083 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:45:59,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:45:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:45:59,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:45:59,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-26 14:45:59,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931625683] [2021-01-26 14:45:59,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:45:59,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:45:59,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:45:59,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:45:59,130 INFO L87 Difference]: Start difference. First operand 8830 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:46:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:00,212 INFO L93 Difference]: Finished difference Result 9534 states and 21664 transitions. [2021-01-26 14:46:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:46:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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 86 [2021-01-26 14:46:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:00,221 INFO L225 Difference]: With dead ends: 9534 [2021-01-26 14:46:00,221 INFO L226 Difference]: Without dead ends: 8950 [2021-01-26 14:46:00,222 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2021-01-26 14:46:00,222 INFO L78 Accepts]: Start accepts. Automaton has 8950 states. Word has length 86 [2021-01-26 14:46:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:00,222 INFO L481 AbstractCegarLoop]: Abstraction has 8950 states. [2021-01-26 14:46:00,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 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) [2021-01-26 14:46:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8950 states. [2021-01-26 14:46:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:46:00,229 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:00,229 INFO L504 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] [2021-01-26 14:46:00,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:00,430 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash 533918017, now seen corresponding path program 69 times [2021-01-26 14:46:00,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:00,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130626851] [2021-01-26 14:46:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:00,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130626851] [2021-01-26 14:46:00,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173883778] [2021-01-26 14:46:00,765 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 [2021-01-26 14:46:00,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-26 14:46:00,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:00,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-26 14:46:00,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:00,890 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:00,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:00,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:46:00,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423218901] [2021-01-26 14:46:00,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:46:00,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:46:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:46:00,901 INFO L87 Difference]: Start difference. First operand 8950 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:01,685 INFO L93 Difference]: Finished difference Result 10422 states and 24194 transitions. [2021-01-26 14:46:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:46:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:46:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:01,699 INFO L225 Difference]: With dead ends: 10422 [2021-01-26 14:46:01,699 INFO L226 Difference]: Without dead ends: 10137 [2021-01-26 14:46:01,700 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2021-01-26 14:46:01,700 INFO L78 Accepts]: Start accepts. Automaton has 10137 states. Word has length 86 [2021-01-26 14:46:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:01,700 INFO L481 AbstractCegarLoop]: Abstraction has 10137 states. [2021-01-26 14:46:01,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 10137 states. [2021-01-26 14:46:01,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-26 14:46:01,710 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:01,710 INFO L504 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] [2021-01-26 14:46:01,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-01-26 14:46:01,911 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:01,911 INFO L82 PathProgramCache]: Analyzing trace with hash 530944787, now seen corresponding path program 70 times [2021-01-26 14:46:01,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:01,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945050787] [2021-01-26 14:46:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:02,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945050787] [2021-01-26 14:46:02,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254684461] [2021-01-26 14:46:02,122 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 [2021-01-26 14:46:02,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:02,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:02,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:02,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:02,230 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:02,244 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:02,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:02,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-26 14:46:02,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709795736] [2021-01-26 14:46:02,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-26 14:46:02,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-26 14:46:02,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-01-26 14:46:02,255 INFO L87 Difference]: Start difference. First operand 10137 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:03,294 INFO L93 Difference]: Finished difference Result 9689 states and 21991 transitions. [2021-01-26 14:46:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:46:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2021-01-26 14:46:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:03,303 INFO L225 Difference]: With dead ends: 9689 [2021-01-26 14:46:03,303 INFO L226 Difference]: Without dead ends: 9060 [2021-01-26 14:46:03,303 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:46:03,303 INFO L78 Accepts]: Start accepts. Automaton has 9060 states. Word has length 86 [2021-01-26 14:46:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:03,303 INFO L481 AbstractCegarLoop]: Abstraction has 9060 states. [2021-01-26 14:46:03,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9060 states. [2021-01-26 14:46:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:03,311 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:03,311 INFO L504 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] [2021-01-26 14:46:03,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:03,512 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash -800382706, now seen corresponding path program 71 times [2021-01-26 14:46:03,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:03,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929750611] [2021-01-26 14:46:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929750611] [2021-01-26 14:46:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743989994] [2021-01-26 14:46:03,804 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 [2021-01-26 14:46:03,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-26 14:46:03,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:03,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:03,918 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:03,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:03,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:03,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352806614] [2021-01-26 14:46:03,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:03,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:03,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:03,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:03,933 INFO L87 Difference]: Start difference. First operand 9060 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:04,378 INFO L93 Difference]: Finished difference Result 9380 states and 21190 transitions. [2021-01-26 14:46:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:46:04,379 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:04,388 INFO L225 Difference]: With dead ends: 9380 [2021-01-26 14:46:04,388 INFO L226 Difference]: Without dead ends: 9110 [2021-01-26 14:46:04,389 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2021-01-26 14:46:04,389 INFO L78 Accepts]: Start accepts. Automaton has 9110 states. Word has length 91 [2021-01-26 14:46:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:04,389 INFO L481 AbstractCegarLoop]: Abstraction has 9110 states. [2021-01-26 14:46:04,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:04,389 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states. [2021-01-26 14:46:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:04,397 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:04,397 INFO L504 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] [2021-01-26 14:46:04,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-01-26 14:46:04,598 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:04,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:04,599 INFO L82 PathProgramCache]: Analyzing trace with hash 523642080, now seen corresponding path program 72 times [2021-01-26 14:46:04,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:04,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733515979] [2021-01-26 14:46:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:04,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733515979] [2021-01-26 14:46:04,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583521140] [2021-01-26 14:46:04,916 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 [2021-01-26 14:46:05,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-26 14:46:05,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:05,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:05,026 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:05,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:05,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:05,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-26 14:46:05,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882302427] [2021-01-26 14:46:05,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:05,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:05,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:05,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:05,099 INFO L87 Difference]: Start difference. First operand 9110 states. 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) [2021-01-26 14:46:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:05,772 INFO L93 Difference]: Finished difference Result 9430 states and 21290 transitions. [2021-01-26 14:46:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:46:05,772 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 [2021-01-26 14:46:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:05,780 INFO L225 Difference]: With dead ends: 9430 [2021-01-26 14:46:05,780 INFO L226 Difference]: Without dead ends: 9160 [2021-01-26 14:46:05,780 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:46:05,781 INFO L78 Accepts]: Start accepts. Automaton has 9160 states. Word has length 91 [2021-01-26 14:46:05,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:05,781 INFO L481 AbstractCegarLoop]: Abstraction has 9160 states. [2021-01-26 14:46:05,781 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) [2021-01-26 14:46:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9160 states. [2021-01-26 14:46:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:05,787 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:05,788 INFO L504 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] [2021-01-26 14:46:05,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:05,988 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:05,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1634704890, now seen corresponding path program 73 times [2021-01-26 14:46:05,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:05,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510575267] [2021-01-26 14:46:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:06,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510575267] [2021-01-26 14:46:06,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276106807] [2021-01-26 14:46:06,262 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 [2021-01-26 14:46:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:06,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:06,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:06,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:06,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:06,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068391844] [2021-01-26 14:46:06,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:06,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:06,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:06,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:06,393 INFO L87 Difference]: Start difference. First operand 9160 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:06,980 INFO L93 Difference]: Finished difference Result 9480 states and 21390 transitions. [2021-01-26 14:46:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:46:06,981 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:06,990 INFO L225 Difference]: With dead ends: 9480 [2021-01-26 14:46:06,990 INFO L226 Difference]: Without dead ends: 9210 [2021-01-26 14:46:06,991 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:46:06,991 INFO L78 Accepts]: Start accepts. Automaton has 9210 states. Word has length 91 [2021-01-26 14:46:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:06,991 INFO L481 AbstractCegarLoop]: Abstraction has 9210 states. [2021-01-26 14:46:06,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9210 states. [2021-01-26 14:46:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:06,999 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:06,999 INFO L504 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] [2021-01-26 14:46:07,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:07,200 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:07,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1956342582, now seen corresponding path program 74 times [2021-01-26 14:46:07,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:07,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019624714] [2021-01-26 14:46:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:07,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019624714] [2021-01-26 14:46:07,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125510532] [2021-01-26 14:46:07,503 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 [2021-01-26 14:46:07,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:46:07,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:07,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:07,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:07,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:07,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:07,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:07,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-26 14:46:07,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008418802] [2021-01-26 14:46:07,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:07,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:07,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:07,677 INFO L87 Difference]: Start difference. First operand 9210 states. 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) [2021-01-26 14:46:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:08,325 INFO L93 Difference]: Finished difference Result 9580 states and 21590 transitions. [2021-01-26 14:46:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:46:08,326 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 [2021-01-26 14:46:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:08,335 INFO L225 Difference]: With dead ends: 9580 [2021-01-26 14:46:08,335 INFO L226 Difference]: Without dead ends: 9310 [2021-01-26 14:46:08,335 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:46:08,335 INFO L78 Accepts]: Start accepts. Automaton has 9310 states. Word has length 91 [2021-01-26 14:46:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:08,335 INFO L481 AbstractCegarLoop]: Abstraction has 9310 states. [2021-01-26 14:46:08,335 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) [2021-01-26 14:46:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9310 states. [2021-01-26 14:46:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:08,343 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:08,343 INFO L504 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] [2021-01-26 14:46:08,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:08,544 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:08,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1071498888, now seen corresponding path program 75 times [2021-01-26 14:46:08,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:08,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492378455] [2021-01-26 14:46:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:08,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492378455] [2021-01-26 14:46:08,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120169900] [2021-01-26 14:46:08,804 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 [2021-01-26 14:46:08,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-26 14:46:08,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:08,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:08,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:08,940 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:08,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:08,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:08,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809576634] [2021-01-26 14:46:08,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:08,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:08,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:08,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:08,958 INFO L87 Difference]: Start difference. First operand 9310 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:09,602 INFO L93 Difference]: Finished difference Result 9630 states and 21690 transitions. [2021-01-26 14:46:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:46:09,602 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:09,612 INFO L225 Difference]: With dead ends: 9630 [2021-01-26 14:46:09,612 INFO L226 Difference]: Without dead ends: 9360 [2021-01-26 14:46:09,612 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:46:09,612 INFO L78 Accepts]: Start accepts. Automaton has 9360 states. Word has length 91 [2021-01-26 14:46:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:09,613 INFO L481 AbstractCegarLoop]: Abstraction has 9360 states. [2021-01-26 14:46:09,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states. [2021-01-26 14:46:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:09,624 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:09,624 INFO L504 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] [2021-01-26 14:46:09,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:09,836 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1664715704, now seen corresponding path program 76 times [2021-01-26 14:46:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:09,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075697858] [2021-01-26 14:46:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:10,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075697858] [2021-01-26 14:46:10,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628524446] [2021-01-26 14:46:10,116 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 [2021-01-26 14:46:10,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:10,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:10,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:10,221 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:10,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:10,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:10,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-26 14:46:10,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320266323] [2021-01-26 14:46:10,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:10,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:10,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:10,280 INFO L87 Difference]: Start difference. First operand 9360 states. 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) [2021-01-26 14:46:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:11,080 INFO L93 Difference]: Finished difference Result 9680 states and 21790 transitions. [2021-01-26 14:46:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:46:11,080 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 [2021-01-26 14:46:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:11,090 INFO L225 Difference]: With dead ends: 9680 [2021-01-26 14:46:11,090 INFO L226 Difference]: Without dead ends: 9410 [2021-01-26 14:46:11,090 INFO L769 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 [2021-01-26 14:46:11,090 INFO L78 Accepts]: Start accepts. Automaton has 9410 states. Word has length 91 [2021-01-26 14:46:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:11,091 INFO L481 AbstractCegarLoop]: Abstraction has 9410 states. [2021-01-26 14:46:11,091 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) [2021-01-26 14:46:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states. [2021-01-26 14:46:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:11,099 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:11,100 INFO L504 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] [2021-01-26 14:46:11,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:11,300 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:11,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1837401482, now seen corresponding path program 77 times [2021-01-26 14:46:11,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:11,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605138776] [2021-01-26 14:46:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:11,688 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-01-26 14:46:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:11,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605138776] [2021-01-26 14:46:11,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496722763] [2021-01-26 14:46:11,699 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 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 [2021-01-26 14:46:11,776 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-26 14:46:11,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:11,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:11,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:11,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:11,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:11,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:11,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413267031] [2021-01-26 14:46:11,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:11,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:11,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:11,830 INFO L87 Difference]: Start difference. First operand 9410 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:12,528 INFO L93 Difference]: Finished difference Result 9730 states and 21890 transitions. [2021-01-26 14:46:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:46:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:12,537 INFO L225 Difference]: With dead ends: 9730 [2021-01-26 14:46:12,537 INFO L226 Difference]: Without dead ends: 9460 [2021-01-26 14:46:12,538 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2021-01-26 14:46:12,538 INFO L78 Accepts]: Start accepts. Automaton has 9460 states. Word has length 91 [2021-01-26 14:46:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:12,538 INFO L481 AbstractCegarLoop]: Abstraction has 9460 states. [2021-01-26 14:46:12,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:12,538 INFO L276 IsEmpty]: Start isEmpty. Operand 9460 states. [2021-01-26 14:46:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:12,547 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:12,547 INFO L504 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] [2021-01-26 14:46:12,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:12,748 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:12,749 INFO L82 PathProgramCache]: Analyzing trace with hash 324270406, now seen corresponding path program 78 times [2021-01-26 14:46:12,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:12,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567297145] [2021-01-26 14:46:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:13,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567297145] [2021-01-26 14:46:13,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953968667] [2021-01-26 14:46:13,049 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 [2021-01-26 14:46:13,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-26 14:46:13,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:13,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:13,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:13,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:13,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:13,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:13,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-26 14:46:13,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749288904] [2021-01-26 14:46:13,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:13,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:13,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:13,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:13,224 INFO L87 Difference]: Start difference. First operand 9460 states. 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) [2021-01-26 14:46:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:14,109 INFO L93 Difference]: Finished difference Result 9780 states and 21990 transitions. [2021-01-26 14:46:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:46:14,109 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 [2021-01-26 14:46:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:14,118 INFO L225 Difference]: With dead ends: 9780 [2021-01-26 14:46:14,118 INFO L226 Difference]: Without dead ends: 9510 [2021-01-26 14:46:14,119 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:46:14,119 INFO L78 Accepts]: Start accepts. Automaton has 9510 states. Word has length 91 [2021-01-26 14:46:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:14,119 INFO L481 AbstractCegarLoop]: Abstraction has 9510 states. [2021-01-26 14:46:14,119 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) [2021-01-26 14:46:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states. [2021-01-26 14:46:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:14,126 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:14,127 INFO L504 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] [2021-01-26 14:46:14,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:14,327 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2080096012, now seen corresponding path program 79 times [2021-01-26 14:46:14,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:14,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104451608] [2021-01-26 14:46:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:14,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104451608] [2021-01-26 14:46:14,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687015723] [2021-01-26 14:46:14,567 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 [2021-01-26 14:46:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:14,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:14,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:14,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:14,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:14,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:14,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115511126] [2021-01-26 14:46:14,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:14,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:14,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:14,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:14,705 INFO L87 Difference]: Start difference. First operand 9510 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:15,469 INFO L93 Difference]: Finished difference Result 9830 states and 22090 transitions. [2021-01-26 14:46:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:46:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:15,479 INFO L225 Difference]: With dead ends: 9830 [2021-01-26 14:46:15,479 INFO L226 Difference]: Without dead ends: 9560 [2021-01-26 14:46:15,479 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:46:15,480 INFO L78 Accepts]: Start accepts. Automaton has 9560 states. Word has length 91 [2021-01-26 14:46:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:15,480 INFO L481 AbstractCegarLoop]: Abstraction has 9560 states. [2021-01-26 14:46:15,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9560 states. [2021-01-26 14:46:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:15,487 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:15,488 INFO L504 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] [2021-01-26 14:46:15,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-01-26 14:46:15,688 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash -858389564, now seen corresponding path program 80 times [2021-01-26 14:46:15,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:15,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518446746] [2021-01-26 14:46:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:15,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518446746] [2021-01-26 14:46:15,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974733218] [2021-01-26 14:46:15,949 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 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 [2021-01-26 14:46:16,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:46:16,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:16,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:16,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:16,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:16,101 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:16,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:16,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-26 14:46:16,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472782080] [2021-01-26 14:46:16,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:16,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:16,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:16,114 INFO L87 Difference]: Start difference. First operand 9560 states. 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) [2021-01-26 14:46:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:17,098 INFO L93 Difference]: Finished difference Result 9880 states and 22190 transitions. [2021-01-26 14:46:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:46:17,098 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 [2021-01-26 14:46:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:17,108 INFO L225 Difference]: With dead ends: 9880 [2021-01-26 14:46:17,108 INFO L226 Difference]: Without dead ends: 9610 [2021-01-26 14:46:17,108 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:46:17,108 INFO L78 Accepts]: Start accepts. Automaton has 9610 states. Word has length 91 [2021-01-26 14:46:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:17,108 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states. [2021-01-26 14:46:17,109 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) [2021-01-26 14:46:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states. [2021-01-26 14:46:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:17,116 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:17,116 INFO L504 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] [2021-01-26 14:46:17,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:17,317 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1948422926, now seen corresponding path program 81 times [2021-01-26 14:46:17,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:17,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754422124] [2021-01-26 14:46:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:17,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754422124] [2021-01-26 14:46:17,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262745969] [2021-01-26 14:46:17,556 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 [2021-01-26 14:46:17,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-26 14:46:17,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:17,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:17,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:17,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:17,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:17,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:17,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387711285] [2021-01-26 14:46:17,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:17,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:17,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:17,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:17,694 INFO L87 Difference]: Start difference. First operand 9610 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:18,251 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-26 14:46:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:18,746 INFO L93 Difference]: Finished difference Result 9930 states and 22290 transitions. [2021-01-26 14:46:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:46:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:18,757 INFO L225 Difference]: With dead ends: 9930 [2021-01-26 14:46:18,758 INFO L226 Difference]: Without dead ends: 9660 [2021-01-26 14:46:18,758 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:46:18,758 INFO L78 Accepts]: Start accepts. Automaton has 9660 states. Word has length 91 [2021-01-26 14:46:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:18,758 INFO L481 AbstractCegarLoop]: Abstraction has 9660 states. [2021-01-26 14:46:18,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 9660 states. [2021-01-26 14:46:18,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:18,768 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:18,768 INFO L504 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] [2021-01-26 14:46:18,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-01-26 14:46:18,969 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1028820030, now seen corresponding path program 82 times [2021-01-26 14:46:18,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:18,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829425403] [2021-01-26 14:46:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:19,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829425403] [2021-01-26 14:46:19,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136698144] [2021-01-26 14:46:19,240 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 [2021-01-26 14:46:19,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:19,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:19,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:19,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:19,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:19,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:19,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:19,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-01-26 14:46:19,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298997984] [2021-01-26 14:46:19,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:19,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:19,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:19,429 INFO L87 Difference]: Start difference. First operand 9660 states. 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) [2021-01-26 14:46:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:20,551 INFO L93 Difference]: Finished difference Result 10140 states and 22790 transitions. [2021-01-26 14:46:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:46:20,552 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 [2021-01-26 14:46:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:20,563 INFO L225 Difference]: With dead ends: 10140 [2021-01-26 14:46:20,563 INFO L226 Difference]: Without dead ends: 9840 [2021-01-26 14:46:20,563 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=584, Invalid=1672, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:46:20,563 INFO L78 Accepts]: Start accepts. Automaton has 9840 states. Word has length 91 [2021-01-26 14:46:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:20,564 INFO L481 AbstractCegarLoop]: Abstraction has 9840 states. [2021-01-26 14:46:20,564 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) [2021-01-26 14:46:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9840 states. [2021-01-26 14:46:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:20,575 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:20,575 INFO L504 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] [2021-01-26 14:46:20,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:20,776 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash -676744112, now seen corresponding path program 83 times [2021-01-26 14:46:20,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:20,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569274782] [2021-01-26 14:46:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:21,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569274782] [2021-01-26 14:46:21,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242693296] [2021-01-26 14:46:21,030 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 [2021-01-26 14:46:21,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-26 14:46:21,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:21,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:21,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:21,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:21,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:21,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:21,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703302426] [2021-01-26 14:46:21,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:21,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:21,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:21,168 INFO L87 Difference]: Start difference. First operand 9840 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:22,074 INFO L93 Difference]: Finished difference Result 11312 states and 26094 transitions. [2021-01-26 14:46:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:46:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:22,085 INFO L225 Difference]: With dead ends: 11312 [2021-01-26 14:46:22,085 INFO L226 Difference]: Without dead ends: 11027 [2021-01-26 14:46:22,086 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:46:22,086 INFO L78 Accepts]: Start accepts. Automaton has 11027 states. Word has length 91 [2021-01-26 14:46:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:22,086 INFO L481 AbstractCegarLoop]: Abstraction has 11027 states. [2021-01-26 14:46:22,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 11027 states. [2021-01-26 14:46:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-26 14:46:22,094 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:22,094 INFO L504 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] [2021-01-26 14:46:22,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:22,295 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:22,296 INFO L82 PathProgramCache]: Analyzing trace with hash -679717342, now seen corresponding path program 84 times [2021-01-26 14:46:22,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:22,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742957641] [2021-01-26 14:46:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:22,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742957641] [2021-01-26 14:46:22,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764894489] [2021-01-26 14:46:22,538 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 [2021-01-26 14:46:22,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-26 14:46:22,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:22,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-26 14:46:22,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:22,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:22,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:22,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:22,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-26 14:46:22,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288586924] [2021-01-26 14:46:22,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:22,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:22,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:22,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:22,682 INFO L87 Difference]: Start difference. First operand 11027 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:23,796 INFO L93 Difference]: Finished difference Result 10579 states and 23891 transitions. [2021-01-26 14:46:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:46:23,796 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-01-26 14:46:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:23,806 INFO L225 Difference]: With dead ends: 10579 [2021-01-26 14:46:23,807 INFO L226 Difference]: Without dead ends: 10010 [2021-01-26 14:46:23,807 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:46:23,807 INFO L78 Accepts]: Start accepts. Automaton has 10010 states. Word has length 91 [2021-01-26 14:46:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:23,807 INFO L481 AbstractCegarLoop]: Abstraction has 10010 states. [2021-01-26 14:46:23,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states. [2021-01-26 14:46:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:23,816 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:23,816 INFO L504 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] [2021-01-26 14:46:24,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:24,023 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash 287717422, now seen corresponding path program 85 times [2021-01-26 14:46:24,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:24,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63984649] [2021-01-26 14:46:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:24,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63984649] [2021-01-26 14:46:24,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088414349] [2021-01-26 14:46:24,344 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 [2021-01-26 14:46:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:24,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:24,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:24,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:24,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:24,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:24,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648583046] [2021-01-26 14:46:24,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:24,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:24,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:24,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:24,650 INFO L87 Difference]: Start difference. First operand 10010 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:25,172 INFO L93 Difference]: Finished difference Result 10330 states and 23240 transitions. [2021-01-26 14:46:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:46:25,173 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:25,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:25,182 INFO L225 Difference]: With dead ends: 10330 [2021-01-26 14:46:25,183 INFO L226 Difference]: Without dead ends: 10060 [2021-01-26 14:46:25,183 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-01-26 14:46:25,183 INFO L78 Accepts]: Start accepts. Automaton has 10060 states. Word has length 96 [2021-01-26 14:46:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:25,183 INFO L481 AbstractCegarLoop]: Abstraction has 10060 states. [2021-01-26 14:46:25,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 10060 states. [2021-01-26 14:46:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:25,192 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:25,192 INFO L504 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] [2021-01-26 14:46:25,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:25,393 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:25,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:25,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1611742208, now seen corresponding path program 86 times [2021-01-26 14:46:25,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:25,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540271966] [2021-01-26 14:46:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:25,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540271966] [2021-01-26 14:46:25,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476324707] [2021-01-26 14:46:25,740 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 [2021-01-26 14:46:25,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:46:25,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:25,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:25,849 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:25,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:25,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:25,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:25,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862619942] [2021-01-26 14:46:25,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:25,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:25,888 INFO L87 Difference]: Start difference. First operand 10060 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:26,569 INFO L93 Difference]: Finished difference Result 10380 states and 23340 transitions. [2021-01-26 14:46:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:46:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:26,580 INFO L225 Difference]: With dead ends: 10380 [2021-01-26 14:46:26,580 INFO L226 Difference]: Without dead ends: 10110 [2021-01-26 14:46:26,580 INFO L769 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 [2021-01-26 14:46:26,580 INFO L78 Accepts]: Start accepts. Automaton has 10110 states. Word has length 96 [2021-01-26 14:46:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:26,580 INFO L481 AbstractCegarLoop]: Abstraction has 10110 states. [2021-01-26 14:46:26,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states. [2021-01-26 14:46:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:26,590 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:26,590 INFO L504 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] [2021-01-26 14:46:26,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:26,791 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:26,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1572162278, now seen corresponding path program 87 times [2021-01-26 14:46:26,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:26,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009202776] [2021-01-26 14:46:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:27,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009202776] [2021-01-26 14:46:27,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537712001] [2021-01-26 14:46:27,089 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 [2021-01-26 14:46:27,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-26 14:46:27,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:27,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:27,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:27,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:27,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:27,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:27,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411744470] [2021-01-26 14:46:27,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:27,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:27,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:27,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:27,222 INFO L87 Difference]: Start difference. First operand 10110 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:27,842 INFO L93 Difference]: Finished difference Result 10430 states and 23440 transitions. [2021-01-26 14:46:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:46:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:27,853 INFO L225 Difference]: With dead ends: 10430 [2021-01-26 14:46:27,853 INFO L226 Difference]: Without dead ends: 10160 [2021-01-26 14:46:27,853 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-01-26 14:46:27,854 INFO L78 Accepts]: Start accepts. Automaton has 10160 states. Word has length 96 [2021-01-26 14:46:27,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:27,854 INFO L481 AbstractCegarLoop]: Abstraction has 10160 states. [2021-01-26 14:46:27,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:27,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10160 states. [2021-01-26 14:46:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:27,865 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:27,865 INFO L504 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] [2021-01-26 14:46:28,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:28,066 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:28,066 INFO L82 PathProgramCache]: Analyzing trace with hash -868242454, now seen corresponding path program 88 times [2021-01-26 14:46:28,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:28,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144882188] [2021-01-26 14:46:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:28,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144882188] [2021-01-26 14:46:28,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623139751] [2021-01-26 14:46:28,372 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 [2021-01-26 14:46:28,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:28,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:28,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:46:28,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:28,486 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:28,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:28,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:28,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:28,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800124793] [2021-01-26 14:46:28,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:28,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:28,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:28,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:28,521 INFO L87 Difference]: Start difference. First operand 10160 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:29,321 INFO L93 Difference]: Finished difference Result 10480 states and 23540 transitions. [2021-01-26 14:46:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:46:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:29,331 INFO L225 Difference]: With dead ends: 10480 [2021-01-26 14:46:29,331 INFO L226 Difference]: Without dead ends: 10210 [2021-01-26 14:46:29,332 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2021-01-26 14:46:29,332 INFO L78 Accepts]: Start accepts. Automaton has 10210 states. Word has length 96 [2021-01-26 14:46:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:29,332 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states. [2021-01-26 14:46:29,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states. [2021-01-26 14:46:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:29,341 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:29,341 INFO L504 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] [2021-01-26 14:46:29,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-01-26 14:46:29,542 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 16601240, now seen corresponding path program 89 times [2021-01-26 14:46:29,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:29,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852985832] [2021-01-26 14:46:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:29,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852985832] [2021-01-26 14:46:29,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446300023] [2021-01-26 14:46:29,825 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 [2021-01-26 14:46:29,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-26 14:46:29,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:29,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:29,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:29,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:29,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:29,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:29,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275332650] [2021-01-26 14:46:29,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:29,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:29,947 INFO L87 Difference]: Start difference. First operand 10210 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:30,645 INFO L93 Difference]: Finished difference Result 10530 states and 23640 transitions. [2021-01-26 14:46:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:46:30,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:30,655 INFO L225 Difference]: With dead ends: 10530 [2021-01-26 14:46:30,656 INFO L226 Difference]: Without dead ends: 10260 [2021-01-26 14:46:30,656 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:46:30,656 INFO L78 Accepts]: Start accepts. Automaton has 10260 states. Word has length 96 [2021-01-26 14:46:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:30,656 INFO L481 AbstractCegarLoop]: Abstraction has 10260 states. [2021-01-26 14:46:30,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10260 states. [2021-01-26 14:46:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:30,827 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:30,827 INFO L504 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] [2021-01-26 14:46:31,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:31,028 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:31,029 INFO L82 PathProgramCache]: Analyzing trace with hash -576615576, now seen corresponding path program 90 times [2021-01-26 14:46:31,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:31,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879431328] [2021-01-26 14:46:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:31,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879431328] [2021-01-26 14:46:31,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264869513] [2021-01-26 14:46:31,331 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 [2021-01-26 14:46:31,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-26 14:46:31,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:31,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:31,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:31,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:31,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:31,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:31,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570353638] [2021-01-26 14:46:31,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:31,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:31,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:31,484 INFO L87 Difference]: Start difference. First operand 10260 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:32,409 INFO L93 Difference]: Finished difference Result 10580 states and 23740 transitions. [2021-01-26 14:46:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:46:32,409 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:32,419 INFO L225 Difference]: With dead ends: 10580 [2021-01-26 14:46:32,419 INFO L226 Difference]: Without dead ends: 10310 [2021-01-26 14:46:32,420 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:46:32,420 INFO L78 Accepts]: Start accepts. Automaton has 10310 states. Word has length 96 [2021-01-26 14:46:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:32,420 INFO L481 AbstractCegarLoop]: Abstraction has 10310 states. [2021-01-26 14:46:32,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states. [2021-01-26 14:46:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:32,431 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:32,433 INFO L504 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] [2021-01-26 14:46:32,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-01-26 14:46:32,648 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:32,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:32,648 INFO L82 PathProgramCache]: Analyzing trace with hash -749301354, now seen corresponding path program 91 times [2021-01-26 14:46:32,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:32,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749861900] [2021-01-26 14:46:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:32,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749861900] [2021-01-26 14:46:32,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264294889] [2021-01-26 14:46:32,922 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 [2021-01-26 14:46:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:32,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:33,019 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:33,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:33,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:33,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424609297] [2021-01-26 14:46:33,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:33,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:33,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:33,032 INFO L87 Difference]: Start difference. First operand 10310 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:33,797 INFO L93 Difference]: Finished difference Result 10630 states and 23840 transitions. [2021-01-26 14:46:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:46:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:33,808 INFO L225 Difference]: With dead ends: 10630 [2021-01-26 14:46:33,808 INFO L226 Difference]: Without dead ends: 10360 [2021-01-26 14:46:33,809 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-01-26 14:46:33,809 INFO L78 Accepts]: Start accepts. Automaton has 10360 states. Word has length 96 [2021-01-26 14:46:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:33,809 INFO L481 AbstractCegarLoop]: Abstraction has 10360 states. [2021-01-26 14:46:33,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 10360 states. [2021-01-26 14:46:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:33,817 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:33,817 INFO L504 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] [2021-01-26 14:46:34,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:34,018 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1412370534, now seen corresponding path program 92 times [2021-01-26 14:46:34,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:34,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049646632] [2021-01-26 14:46:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:34,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049646632] [2021-01-26 14:46:34,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299644957] [2021-01-26 14:46:34,309 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 [2021-01-26 14:46:34,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:46:34,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:34,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:34,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:34,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:34,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:34,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:34,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:34,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850269350] [2021-01-26 14:46:34,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:34,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:34,448 INFO L87 Difference]: Start difference. First operand 10360 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:35,459 INFO L93 Difference]: Finished difference Result 10680 states and 23940 transitions. [2021-01-26 14:46:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:46:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:35,470 INFO L225 Difference]: With dead ends: 10680 [2021-01-26 14:46:35,470 INFO L226 Difference]: Without dead ends: 10410 [2021-01-26 14:46:35,470 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:46:35,470 INFO L78 Accepts]: Start accepts. Automaton has 10410 states. Word has length 96 [2021-01-26 14:46:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:35,471 INFO L481 AbstractCegarLoop]: Abstraction has 10410 states. [2021-01-26 14:46:35,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states. [2021-01-26 14:46:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:35,481 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:35,481 INFO L504 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] [2021-01-26 14:46:35,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-01-26 14:46:35,682 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash -991995884, now seen corresponding path program 93 times [2021-01-26 14:46:35,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:35,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325829688] [2021-01-26 14:46:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:35,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325829688] [2021-01-26 14:46:35,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775541827] [2021-01-26 14:46:35,953 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 [2021-01-26 14:46:36,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-26 14:46:36,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:36,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:36,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:36,064 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:36,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:36,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:36,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962077009] [2021-01-26 14:46:36,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:36,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:36,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:36,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:36,080 INFO L87 Difference]: Start difference. First operand 10410 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:37,050 INFO L93 Difference]: Finished difference Result 10730 states and 24040 transitions. [2021-01-26 14:46:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:46:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:37,061 INFO L225 Difference]: With dead ends: 10730 [2021-01-26 14:46:37,061 INFO L226 Difference]: Without dead ends: 10460 [2021-01-26 14:46:37,062 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:46:37,062 INFO L78 Accepts]: Start accepts. Automaton has 10460 states. Word has length 96 [2021-01-26 14:46:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:37,062 INFO L481 AbstractCegarLoop]: Abstraction has 10460 states. [2021-01-26 14:46:37,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states. [2021-01-26 14:46:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:37,073 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:37,073 INFO L504 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] [2021-01-26 14:46:37,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-01-26 14:46:37,287 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash 229710564, now seen corresponding path program 94 times [2021-01-26 14:46:37,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:37,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343880554] [2021-01-26 14:46:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:37,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343880554] [2021-01-26 14:46:37,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35242728] [2021-01-26 14:46:37,565 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 [2021-01-26 14:46:37,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:37,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:37,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:46:37,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:37,673 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:37,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:37,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:37,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:37,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903359587] [2021-01-26 14:46:37,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:37,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:37,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:37,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:37,706 INFO L87 Difference]: Start difference. First operand 10460 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:38,845 INFO L93 Difference]: Finished difference Result 10780 states and 24140 transitions. [2021-01-26 14:46:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:46:38,846 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:38,856 INFO L225 Difference]: With dead ends: 10780 [2021-01-26 14:46:38,856 INFO L226 Difference]: Without dead ends: 10510 [2021-01-26 14:46:38,857 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:46:38,857 INFO L78 Accepts]: Start accepts. Automaton has 10510 states. Word has length 96 [2021-01-26 14:46:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:38,857 INFO L481 AbstractCegarLoop]: Abstraction has 10510 states. [2021-01-26 14:46:38,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10510 states. [2021-01-26 14:46:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:38,865 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:38,865 INFO L504 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] [2021-01-26 14:46:39,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-01-26 14:46:39,066 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -860322798, now seen corresponding path program 95 times [2021-01-26 14:46:39,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:39,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651534270] [2021-01-26 14:46:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:39,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651534270] [2021-01-26 14:46:39,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653599031] [2021-01-26 14:46:39,326 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 [2021-01-26 14:46:39,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-26 14:46:39,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:39,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:39,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:39,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:39,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:39,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964929073] [2021-01-26 14:46:39,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:39,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:39,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:39,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:39,442 INFO L87 Difference]: Start difference. First operand 10510 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:40,357 INFO L93 Difference]: Finished difference Result 10830 states and 24240 transitions. [2021-01-26 14:46:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:46:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:40,368 INFO L225 Difference]: With dead ends: 10830 [2021-01-26 14:46:40,368 INFO L226 Difference]: Without dead ends: 10560 [2021-01-26 14:46:40,368 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:46:40,368 INFO L78 Accepts]: Start accepts. Automaton has 10560 states. Word has length 96 [2021-01-26 14:46:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:40,368 INFO L481 AbstractCegarLoop]: Abstraction has 10560 states. [2021-01-26 14:46:40,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10560 states. [2021-01-26 14:46:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:40,377 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:40,377 INFO L504 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] [2021-01-26 14:46:40,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:40,578 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash 59280098, now seen corresponding path program 96 times [2021-01-26 14:46:40,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:40,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634085859] [2021-01-26 14:46:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:40,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634085859] [2021-01-26 14:46:40,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887584674] [2021-01-26 14:46:40,842 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 [2021-01-26 14:46:40,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-26 14:46:40,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:40,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:40,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:40,956 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:40,974 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:40,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:40,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:40,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683434129] [2021-01-26 14:46:40,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:40,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:40,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:40,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:40,987 INFO L87 Difference]: Start difference. First operand 10560 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:42,215 INFO L93 Difference]: Finished difference Result 10920 states and 24420 transitions. [2021-01-26 14:46:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:46:42,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:42,225 INFO L225 Difference]: With dead ends: 10920 [2021-01-26 14:46:42,226 INFO L226 Difference]: Without dead ends: 10650 [2021-01-26 14:46:42,226 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 14:46:42,226 INFO L78 Accepts]: Start accepts. Automaton has 10650 states. Word has length 96 [2021-01-26 14:46:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:42,226 INFO L481 AbstractCegarLoop]: Abstraction has 10650 states. [2021-01-26 14:46:42,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states. [2021-01-26 14:46:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:42,235 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:42,235 INFO L504 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] [2021-01-26 14:46:42,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-01-26 14:46:42,436 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash 411356016, now seen corresponding path program 97 times [2021-01-26 14:46:42,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:42,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982008577] [2021-01-26 14:46:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:42,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982008577] [2021-01-26 14:46:42,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675082621] [2021-01-26 14:46:42,690 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 [2021-01-26 14:46:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:42,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:42,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:42,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:42,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:42,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-01-26 14:46:42,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060881387] [2021-01-26 14:46:42,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-26 14:46:42,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:42,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-26 14:46:42,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:46:42,802 INFO L87 Difference]: Start difference. First operand 10650 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:43,987 INFO L93 Difference]: Finished difference Result 12122 states and 27784 transitions. [2021-01-26 14:46:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:46:43,987 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-01-26 14:46:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:43,999 INFO L225 Difference]: With dead ends: 12122 [2021-01-26 14:46:44,000 INFO L226 Difference]: Without dead ends: 11852 [2021-01-26 14:46:44,000 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:46:44,000 INFO L78 Accepts]: Start accepts. Automaton has 11852 states. Word has length 96 [2021-01-26 14:46:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:44,000 INFO L481 AbstractCegarLoop]: Abstraction has 11852 states. [2021-01-26 14:46:44,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 11852 states. [2021-01-26 14:46:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-26 14:46:44,011 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:44,011 INFO L504 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] [2021-01-26 14:46:44,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:44,212 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash 408382786, now seen corresponding path program 98 times [2021-01-26 14:46:44,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:44,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493396612] [2021-01-26 14:46:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:44,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493396612] [2021-01-26 14:46:44,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133211012] [2021-01-26 14:46:44,493 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 [2021-01-26 14:46:44,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:46:44,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:44,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-26 14:46:44,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:44,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:44,634 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:44,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:44,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-26 14:46:44,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661181311] [2021-01-26 14:46:44,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:44,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:44,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:44,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:44,650 INFO L87 Difference]: Start difference. First operand 11852 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:46,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:46,039 INFO L93 Difference]: Finished difference Result 11404 states and 25626 transitions. [2021-01-26 14:46:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:46:46,039 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-01-26 14:46:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:46,050 INFO L225 Difference]: With dead ends: 11404 [2021-01-26 14:46:46,051 INFO L226 Difference]: Without dead ends: 10865 [2021-01-26 14:46:46,051 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:46:46,051 INFO L78 Accepts]: Start accepts. Automaton has 10865 states. Word has length 96 [2021-01-26 14:46:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:46,051 INFO L481 AbstractCegarLoop]: Abstraction has 10865 states. [2021-01-26 14:46:46,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states. [2021-01-26 14:46:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:46,064 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:46,064 INFO L504 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] [2021-01-26 14:46:46,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-01-26 14:46:46,265 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:46,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1918560897, now seen corresponding path program 99 times [2021-01-26 14:46:46,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:46,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536005849] [2021-01-26 14:46:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:46,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536005849] [2021-01-26 14:46:46,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155225781] [2021-01-26 14:46:46,653 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 [2021-01-26 14:46:46,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-26 14:46:46,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:46,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:46,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:46,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:46,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:46:46,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295647972] [2021-01-26 14:46:46,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:46,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:46,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:46,780 INFO L87 Difference]: Start difference. First operand 10865 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:47,322 INFO L93 Difference]: Finished difference Result 11185 states and 25050 transitions. [2021-01-26 14:46:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:46:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:46:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:47,334 INFO L225 Difference]: With dead ends: 11185 [2021-01-26 14:46:47,335 INFO L226 Difference]: Without dead ends: 10915 [2021-01-26 14:46:47,335 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:46:47,335 INFO L78 Accepts]: Start accepts. Automaton has 10915 states. Word has length 101 [2021-01-26 14:46:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:47,335 INFO L481 AbstractCegarLoop]: Abstraction has 10915 states. [2021-01-26 14:46:47,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10915 states. [2021-01-26 14:46:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:47,345 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:47,345 INFO L504 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] [2021-01-26 14:46:47,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:47,547 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1149434577, now seen corresponding path program 100 times [2021-01-26 14:46:47,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:47,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837037481] [2021-01-26 14:46:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:47,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837037481] [2021-01-26 14:46:47,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062456696] [2021-01-26 14:46:47,925 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 [2021-01-26 14:46:48,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:48,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:48,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:48,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:48,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:48,047 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:48,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:48,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:46:48,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37338798] [2021-01-26 14:46:48,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:46:48,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:48,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:46:48,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:46:48,064 INFO L87 Difference]: Start difference. First operand 10915 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:48,728 INFO L93 Difference]: Finished difference Result 11235 states and 25150 transitions. [2021-01-26 14:46:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-26 14:46:48,728 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:46:48,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:48,739 INFO L225 Difference]: With dead ends: 11235 [2021-01-26 14:46:48,740 INFO L226 Difference]: Without dead ends: 10965 [2021-01-26 14:46:48,740 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:46:48,740 INFO L78 Accepts]: Start accepts. Automaton has 10965 states. Word has length 101 [2021-01-26 14:46:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:48,740 INFO L481 AbstractCegarLoop]: Abstraction has 10965 states. [2021-01-26 14:46:48,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 10965 states. [2021-01-26 14:46:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:48,751 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:48,751 INFO L504 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] [2021-01-26 14:46:48,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:48,953 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:48,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:48,954 INFO L82 PathProgramCache]: Analyzing trace with hash 187915115, now seen corresponding path program 101 times [2021-01-26 14:46:48,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:48,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254862321] [2021-01-26 14:46:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:49,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254862321] [2021-01-26 14:46:49,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434691246] [2021-01-26 14:46:49,298 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 [2021-01-26 14:46:49,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-26 14:46:49,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:49,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:49,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:49,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:49,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:46:49,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064211456] [2021-01-26 14:46:49,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:49,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:49,418 INFO L87 Difference]: Start difference. First operand 10965 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:50,228 INFO L93 Difference]: Finished difference Result 11285 states and 25250 transitions. [2021-01-26 14:46:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:46:50,228 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:46:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:50,238 INFO L225 Difference]: With dead ends: 11285 [2021-01-26 14:46:50,238 INFO L226 Difference]: Without dead ends: 11015 [2021-01-26 14:46:50,238 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=390, Invalid=1170, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:46:50,238 INFO L78 Accepts]: Start accepts. Automaton has 11015 states. Word has length 101 [2021-01-26 14:46:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:50,239 INFO L481 AbstractCegarLoop]: Abstraction has 11015 states. [2021-01-26 14:46:50,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states. [2021-01-26 14:46:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:50,247 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:50,247 INFO L504 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] [2021-01-26 14:46:50,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-01-26 14:46:50,448 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:50,449 INFO L82 PathProgramCache]: Analyzing trace with hash 297668155, now seen corresponding path program 102 times [2021-01-26 14:46:50,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:50,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462999399] [2021-01-26 14:46:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:50,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462999399] [2021-01-26 14:46:50,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243142643] [2021-01-26 14:46:50,815 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 [2021-01-26 14:46:50,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-26 14:46:50,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:50,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:50,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:50,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:50,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:50,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:50,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:46:50,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972761446] [2021-01-26 14:46:50,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:46:50,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:50,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:46:50,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:46:50,974 INFO L87 Difference]: Start difference. First operand 11015 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:51,748 INFO L93 Difference]: Finished difference Result 11385 states and 25450 transitions. [2021-01-26 14:46:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:46:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:46:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:51,759 INFO L225 Difference]: With dead ends: 11385 [2021-01-26 14:46:51,759 INFO L226 Difference]: Without dead ends: 11115 [2021-01-26 14:46:51,760 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=437, Invalid=1369, Unknown=0, NotChecked=0, Total=1806 [2021-01-26 14:46:51,760 INFO L78 Accepts]: Start accepts. Automaton has 11115 states. Word has length 101 [2021-01-26 14:46:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:51,760 INFO L481 AbstractCegarLoop]: Abstraction has 11115 states. [2021-01-26 14:46:51,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 11115 states. [2021-01-26 14:46:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:51,770 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:51,770 INFO L504 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] [2021-01-26 14:46:51,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:51,970 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:51,971 INFO L82 PathProgramCache]: Analyzing trace with hash -198168215, now seen corresponding path program 103 times [2021-01-26 14:46:51,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:51,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378816222] [2021-01-26 14:46:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:52,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378816222] [2021-01-26 14:46:52,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984139223] [2021-01-26 14:46:52,291 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 [2021-01-26 14:46:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:52,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:52,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:52,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:52,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:52,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:46:52,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572691072] [2021-01-26 14:46:52,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:52,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:52,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:52,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:52,409 INFO L87 Difference]: Start difference. First operand 11115 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:53,145 INFO L93 Difference]: Finished difference Result 11435 states and 25550 transitions. [2021-01-26 14:46:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:46:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:46:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:53,157 INFO L225 Difference]: With dead ends: 11435 [2021-01-26 14:46:53,157 INFO L226 Difference]: Without dead ends: 11165 [2021-01-26 14:46:53,158 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=441, Invalid=1365, Unknown=0, NotChecked=0, Total=1806 [2021-01-26 14:46:53,158 INFO L78 Accepts]: Start accepts. Automaton has 11165 states. Word has length 101 [2021-01-26 14:46:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:53,158 INFO L481 AbstractCegarLoop]: Abstraction has 11165 states. [2021-01-26 14:46:53,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11165 states. [2021-01-26 14:46:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:53,167 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:53,167 INFO L504 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] [2021-01-26 14:46:53,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:53,368 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash 505751609, now seen corresponding path program 104 times [2021-01-26 14:46:53,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:53,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876340787] [2021-01-26 14:46:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:53,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876340787] [2021-01-26 14:46:53,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377478225] [2021-01-26 14:46:53,715 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 [2021-01-26 14:46:53,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:46:53,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:53,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:53,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:53,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:53,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:53,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:53,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:46:53,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970140677] [2021-01-26 14:46:53,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:46:53,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:53,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:46:53,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:46:53,873 INFO L87 Difference]: Start difference. First operand 11165 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:54,754 INFO L93 Difference]: Finished difference Result 11485 states and 25650 transitions. [2021-01-26 14:46:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:46:54,755 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:46:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:54,766 INFO L225 Difference]: With dead ends: 11485 [2021-01-26 14:46:54,766 INFO L226 Difference]: Without dead ends: 11215 [2021-01-26 14:46:54,766 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=463, Invalid=1517, Unknown=0, NotChecked=0, Total=1980 [2021-01-26 14:46:54,767 INFO L78 Accepts]: Start accepts. Automaton has 11215 states. Word has length 101 [2021-01-26 14:46:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:54,767 INFO L481 AbstractCegarLoop]: Abstraction has 11215 states. [2021-01-26 14:46:54,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 11215 states. [2021-01-26 14:46:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:54,776 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:54,776 INFO L504 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] [2021-01-26 14:46:54,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-01-26 14:46:54,977 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1390595303, now seen corresponding path program 105 times [2021-01-26 14:46:54,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:54,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237981171] [2021-01-26 14:46:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:55,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237981171] [2021-01-26 14:46:55,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976013303] [2021-01-26 14:46:55,289 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 [2021-01-26 14:46:55,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-26 14:46:55,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:55,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:55,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:55,392 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:55,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:55,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:46:55,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488626185] [2021-01-26 14:46:55,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:55,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:55,409 INFO L87 Difference]: Start difference. First operand 11215 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:56,205 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-26 14:46:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:56,419 INFO L93 Difference]: Finished difference Result 11535 states and 25750 transitions. [2021-01-26 14:46:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:46:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:46:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:56,429 INFO L225 Difference]: With dead ends: 11535 [2021-01-26 14:46:56,429 INFO L226 Difference]: Without dead ends: 11265 [2021-01-26 14:46:56,430 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=481, Invalid=1499, Unknown=0, NotChecked=0, Total=1980 [2021-01-26 14:46:56,430 INFO L78 Accepts]: Start accepts. Automaton has 11265 states. Word has length 101 [2021-01-26 14:46:56,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:56,430 INFO L481 AbstractCegarLoop]: Abstraction has 11265 states. [2021-01-26 14:46:56,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 11265 states. [2021-01-26 14:46:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:56,439 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:56,439 INFO L504 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] [2021-01-26 14:46:56,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-01-26 14:46:56,640 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash 797378487, now seen corresponding path program 106 times [2021-01-26 14:46:56,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:56,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11312259] [2021-01-26 14:46:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:56,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11312259] [2021-01-26 14:46:56,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176225713] [2021-01-26 14:46:56,969 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 [2021-01-26 14:46:57,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:46:57,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:57,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:46:57,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:57,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:46:57,096 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:57,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:57,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:46:57,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101483082] [2021-01-26 14:46:57,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:46:57,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:57,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:46:57,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:46:57,120 INFO L87 Difference]: Start difference. First operand 11265 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:58,118 INFO L93 Difference]: Finished difference Result 11585 states and 25850 transitions. [2021-01-26 14:46:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:46:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:46:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:58,130 INFO L225 Difference]: With dead ends: 11585 [2021-01-26 14:46:58,130 INFO L226 Difference]: Without dead ends: 11315 [2021-01-26 14:46:58,131 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=505, Invalid=1657, Unknown=0, NotChecked=0, Total=2162 [2021-01-26 14:46:58,131 INFO L78 Accepts]: Start accepts. Automaton has 11315 states. Word has length 101 [2021-01-26 14:46:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:58,131 INFO L481 AbstractCegarLoop]: Abstraction has 11315 states. [2021-01-26 14:46:58,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:46:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states. [2021-01-26 14:46:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:58,140 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:58,141 INFO L504 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] [2021-01-26 14:46:58,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-01-26 14:46:58,341 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:58,342 INFO L82 PathProgramCache]: Analyzing trace with hash 624692709, now seen corresponding path program 107 times [2021-01-26 14:46:58,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:58,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958278633] [2021-01-26 14:46:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:46:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:58,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958278633] [2021-01-26 14:46:58,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157020553] [2021-01-26 14:46:58,640 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 [2021-01-26 14:46:58,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-26 14:46:58,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:46:58,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:46:58,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:46:58,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:46:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:46:58,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:46:58,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:46:58,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32705053] [2021-01-26 14:46:58,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:46:58,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:46:58,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:46:58,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:46:58,767 INFO L87 Difference]: Start difference. First operand 11315 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:46:59,660 INFO L93 Difference]: Finished difference Result 11635 states and 25950 transitions. [2021-01-26 14:46:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:46:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:46:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:46:59,672 INFO L225 Difference]: With dead ends: 11635 [2021-01-26 14:46:59,672 INFO L226 Difference]: Without dead ends: 11365 [2021-01-26 14:46:59,672 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=537, Invalid=1625, Unknown=0, NotChecked=0, Total=2162 [2021-01-26 14:46:59,672 INFO L78 Accepts]: Start accepts. Automaton has 11365 states. Word has length 101 [2021-01-26 14:46:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:46:59,673 INFO L481 AbstractCegarLoop]: Abstraction has 11365 states. [2021-01-26 14:46:59,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:46:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 11365 states. [2021-01-26 14:46:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:46:59,682 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:46:59,682 INFO L504 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] [2021-01-26 14:46:59,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:46:59,883 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:46:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:46:59,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1508602699, now seen corresponding path program 108 times [2021-01-26 14:46:59,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:46:59,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433389880] [2021-01-26 14:46:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:46:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:00,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433389880] [2021-01-26 14:47:00,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579800671] [2021-01-26 14:47:00,197 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 [2021-01-26 14:47:00,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-26 14:47:00,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:00,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:47:00,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:00,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:00,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:00,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:00,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:47:00,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070484151] [2021-01-26 14:47:00,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:00,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:00,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:00,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:00,345 INFO L87 Difference]: Start difference. First operand 11365 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:47:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:01,457 INFO L93 Difference]: Finished difference Result 11685 states and 26050 transitions. [2021-01-26 14:47:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:47:01,458 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:47:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:01,470 INFO L225 Difference]: With dead ends: 11685 [2021-01-26 14:47:01,470 INFO L226 Difference]: Without dead ends: 11415 [2021-01-26 14:47:01,470 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=563, Invalid=1789, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:47:01,471 INFO L78 Accepts]: Start accepts. Automaton has 11415 states. Word has length 101 [2021-01-26 14:47:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:01,471 INFO L481 AbstractCegarLoop]: Abstraction has 11415 states. [2021-01-26 14:47:01,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:47:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 11415 states. [2021-01-26 14:47:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:47:01,480 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:01,480 INFO L504 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] [2021-01-26 14:47:01,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-01-26 14:47:01,681 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash 381998179, now seen corresponding path program 109 times [2021-01-26 14:47:01,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:01,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790276028] [2021-01-26 14:47:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:01,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790276028] [2021-01-26 14:47:01,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206900688] [2021-01-26 14:47:01,973 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 [2021-01-26 14:47:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:02,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:47:02,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:02,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:02,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:02,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:47:02,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205594402] [2021-01-26 14:47:02,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:47:02,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:02,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:47:02,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:47:02,098 INFO L87 Difference]: Start difference. First operand 11415 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:02,726 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-26 14:47:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:03,206 INFO L93 Difference]: Finished difference Result 11735 states and 26150 transitions. [2021-01-26 14:47:03,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:47:03,206 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:47:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:03,217 INFO L225 Difference]: With dead ends: 11735 [2021-01-26 14:47:03,218 INFO L226 Difference]: Without dead ends: 11465 [2021-01-26 14:47:03,218 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=609, Invalid=1743, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:47:03,218 INFO L78 Accepts]: Start accepts. Automaton has 11465 states. Word has length 101 [2021-01-26 14:47:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:03,218 INFO L481 AbstractCegarLoop]: Abstraction has 11465 states. [2021-01-26 14:47:03,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11465 states. [2021-01-26 14:47:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:47:03,228 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:03,228 INFO L504 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] [2021-01-26 14:47:03,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-01-26 14:47:03,429 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:03,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1603704627, now seen corresponding path program 110 times [2021-01-26 14:47:03,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:03,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826394292] [2021-01-26 14:47:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:03,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826394292] [2021-01-26 14:47:03,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371530568] [2021-01-26 14:47:03,736 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 [2021-01-26 14:47:03,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:47:03,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:03,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:47:03,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:03,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:03,866 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:03,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:03,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:47:03,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373203763] [2021-01-26 14:47:03,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:03,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:03,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:03,878 INFO L87 Difference]: Start difference. First operand 11465 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:47:05,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:05,113 INFO L93 Difference]: Finished difference Result 11785 states and 26250 transitions. [2021-01-26 14:47:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:47:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:47:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:05,124 INFO L225 Difference]: With dead ends: 11785 [2021-01-26 14:47:05,125 INFO L226 Difference]: Without dead ends: 11515 [2021-01-26 14:47:05,125 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=637, Invalid=1913, Unknown=0, NotChecked=0, Total=2550 [2021-01-26 14:47:05,125 INFO L78 Accepts]: Start accepts. Automaton has 11515 states. Word has length 101 [2021-01-26 14:47:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:05,125 INFO L481 AbstractCegarLoop]: Abstraction has 11515 states. [2021-01-26 14:47:05,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:47:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states. [2021-01-26 14:47:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:47:05,134 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:05,134 INFO L504 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] [2021-01-26 14:47:05,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-01-26 14:47:05,335 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash 513671265, now seen corresponding path program 111 times [2021-01-26 14:47:05,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:05,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359850799] [2021-01-26 14:47:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:05,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359850799] [2021-01-26 14:47:05,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109380747] [2021-01-26 14:47:05,625 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 [2021-01-26 14:47:05,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-26 14:47:05,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:05,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:47:05,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:05,734 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:05,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:05,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:47:05,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136501350] [2021-01-26 14:47:05,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:47:05,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:05,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:47:05,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:47:05,746 INFO L87 Difference]: Start difference. First operand 11515 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:06,797 INFO L93 Difference]: Finished difference Result 11835 states and 26350 transitions. [2021-01-26 14:47:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:47:06,798 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:47:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:06,809 INFO L225 Difference]: With dead ends: 11835 [2021-01-26 14:47:06,809 INFO L226 Difference]: Without dead ends: 11565 [2021-01-26 14:47:06,810 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=697, Invalid=1853, Unknown=0, NotChecked=0, Total=2550 [2021-01-26 14:47:06,810 INFO L78 Accepts]: Start accepts. Automaton has 11565 states. Word has length 101 [2021-01-26 14:47:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:06,810 INFO L481 AbstractCegarLoop]: Abstraction has 11565 states. [2021-01-26 14:47:06,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 11565 states. [2021-01-26 14:47:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:47:06,819 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:06,819 INFO L504 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] [2021-01-26 14:47:07,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:07,020 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1433274161, now seen corresponding path program 112 times [2021-01-26 14:47:07,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:07,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364540692] [2021-01-26 14:47:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:07,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364540692] [2021-01-26 14:47:07,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683776516] [2021-01-26 14:47:07,318 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 [2021-01-26 14:47:07,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:47:07,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:07,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:07,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:07,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:07,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:07,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:07,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-26 14:47:07,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985272561] [2021-01-26 14:47:07,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:07,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:07,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:07,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:07,457 INFO L87 Difference]: Start difference. First operand 11565 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:47:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:08,771 INFO L93 Difference]: Finished difference Result 11925 states and 26530 transitions. [2021-01-26 14:47:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 14:47:08,772 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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 101 [2021-01-26 14:47:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:08,783 INFO L225 Difference]: With dead ends: 11925 [2021-01-26 14:47:08,783 INFO L226 Difference]: Without dead ends: 11655 [2021-01-26 14:47:08,783 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=727, Invalid=2029, Unknown=0, NotChecked=0, Total=2756 [2021-01-26 14:47:08,783 INFO L78 Accepts]: Start accepts. Automaton has 11655 states. Word has length 101 [2021-01-26 14:47:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:08,784 INFO L481 AbstractCegarLoop]: Abstraction has 11655 states. [2021-01-26 14:47:08,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 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) [2021-01-26 14:47:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11655 states. [2021-01-26 14:47:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:47:08,793 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:08,793 INFO L504 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] [2021-01-26 14:47:08,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:08,994 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:08,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:08,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1785350079, now seen corresponding path program 113 times [2021-01-26 14:47:08,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:08,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400214957] [2021-01-26 14:47:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:09,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400214957] [2021-01-26 14:47:09,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707658537] [2021-01-26 14:47:09,269 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 [2021-01-26 14:47:09,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-26 14:47:09,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:09,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:47:09,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:09,541 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:09,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:09,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-01-26 14:47:09,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643348296] [2021-01-26 14:47:09,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-26 14:47:09,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:09,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-26 14:47:09,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:47:09,559 INFO L87 Difference]: Start difference. First operand 11655 states. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:10,750 INFO L93 Difference]: Finished difference Result 13127 states and 29894 transitions. [2021-01-26 14:47:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-26 14:47:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2021-01-26 14:47:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:10,764 INFO L225 Difference]: With dead ends: 13127 [2021-01-26 14:47:10,764 INFO L226 Difference]: Without dead ends: 12857 [2021-01-26 14:47:10,765 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2021-01-26 14:47:10,765 INFO L78 Accepts]: Start accepts. Automaton has 12857 states. Word has length 101 [2021-01-26 14:47:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:10,765 INFO L481 AbstractCegarLoop]: Abstraction has 12857 states. [2021-01-26 14:47:10,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states. [2021-01-26 14:47:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-26 14:47:10,777 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:10,777 INFO L504 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] [2021-01-26 14:47:10,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:10,978 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:10,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1782376849, now seen corresponding path program 114 times [2021-01-26 14:47:10,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:10,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767257036] [2021-01-26 14:47:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767257036] [2021-01-26 14:47:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917856820] [2021-01-26 14:47:11,312 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 [2021-01-26 14:47:11,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-26 14:47:11,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:11,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-26 14:47:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:11,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:11,479 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:11,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:11,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-01-26 14:47:11,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874658800] [2021-01-26 14:47:11,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:11,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:11,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:11,497 INFO L87 Difference]: Start difference. First operand 12857 states. Second operand has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:13,161 INFO L93 Difference]: Finished difference Result 12790 states and 28676 transitions. [2021-01-26 14:47:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-26 14:47:13,162 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2021-01-26 14:47:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:13,175 INFO L225 Difference]: With dead ends: 12790 [2021-01-26 14:47:13,176 INFO L226 Difference]: Without dead ends: 12135 [2021-01-26 14:47:13,176 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2021-01-26 14:47:13,176 INFO L78 Accepts]: Start accepts. Automaton has 12135 states. Word has length 101 [2021-01-26 14:47:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:13,176 INFO L481 AbstractCegarLoop]: Abstraction has 12135 states. [2021-01-26 14:47:13,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12135 states. [2021-01-26 14:47:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:13,190 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:13,190 INFO L504 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] [2021-01-26 14:47:13,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-01-26 14:47:13,392 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:13,393 INFO L82 PathProgramCache]: Analyzing trace with hash -513424225, now seen corresponding path program 115 times [2021-01-26 14:47:13,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:13,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864820731] [2021-01-26 14:47:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:13,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864820731] [2021-01-26 14:47:13,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420893827] [2021-01-26 14:47:13,791 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 [2021-01-26 14:47:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:13,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:13,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:13,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:13,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:13,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:13,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451167471] [2021-01-26 14:47:13,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:13,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:13,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:13,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:13,909 INFO L87 Difference]: Start difference. First operand 12135 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:14,603 INFO L93 Difference]: Finished difference Result 12455 states and 27770 transitions. [2021-01-26 14:47:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:47:14,604 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:14,616 INFO L225 Difference]: With dead ends: 12455 [2021-01-26 14:47:14,616 INFO L226 Difference]: Without dead ends: 12185 [2021-01-26 14:47:14,616 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=1142, Unknown=0, NotChecked=0, Total=1560 [2021-01-26 14:47:14,616 INFO L78 Accepts]: Start accepts. Automaton has 12185 states. Word has length 106 [2021-01-26 14:47:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:14,616 INFO L481 AbstractCegarLoop]: Abstraction has 12185 states. [2021-01-26 14:47:14,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 12185 states. [2021-01-26 14:47:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:14,627 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:14,627 INFO L504 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] [2021-01-26 14:47:14,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-01-26 14:47:14,828 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:14,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1740396047, now seen corresponding path program 116 times [2021-01-26 14:47:14,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:14,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143630671] [2021-01-26 14:47:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:15,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143630671] [2021-01-26 14:47:15,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350553323] [2021-01-26 14:47:15,242 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 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 [2021-01-26 14:47:15,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:47:15,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:15,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:15,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:15,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:15,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:15,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:15,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161894055] [2021-01-26 14:47:15,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:15,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:15,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:15,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:15,392 INFO L87 Difference]: Start difference. First operand 12185 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:16,260 INFO L93 Difference]: Finished difference Result 12505 states and 27870 transitions. [2021-01-26 14:47:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:47:16,261 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:16,273 INFO L225 Difference]: With dead ends: 12505 [2021-01-26 14:47:16,273 INFO L226 Difference]: Without dead ends: 12235 [2021-01-26 14:47:16,273 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=477, Invalid=1415, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:47:16,274 INFO L78 Accepts]: Start accepts. Automaton has 12235 states. Word has length 106 [2021-01-26 14:47:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:16,274 INFO L481 AbstractCegarLoop]: Abstraction has 12235 states. [2021-01-26 14:47:16,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states. [2021-01-26 14:47:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:16,457 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:16,457 INFO L504 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] [2021-01-26 14:47:16,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-01-26 14:47:16,658 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1593051787, now seen corresponding path program 117 times [2021-01-26 14:47:16,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:16,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454262541] [2021-01-26 14:47:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:17,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454262541] [2021-01-26 14:47:17,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216507387] [2021-01-26 14:47:17,029 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 [2021-01-26 14:47:17,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-26 14:47:17,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:17,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:17,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:17,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:17,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:17,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940116779] [2021-01-26 14:47:17,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:17,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:17,154 INFO L87 Difference]: Start difference. First operand 12235 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:17,884 INFO L93 Difference]: Finished difference Result 12555 states and 27970 transitions. [2021-01-26 14:47:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:47:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:17,896 INFO L225 Difference]: With dead ends: 12555 [2021-01-26 14:47:17,897 INFO L226 Difference]: Without dead ends: 12285 [2021-01-26 14:47:17,897 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2021-01-26 14:47:17,897 INFO L78 Accepts]: Start accepts. Automaton has 12285 states. Word has length 106 [2021-01-26 14:47:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:17,897 INFO L481 AbstractCegarLoop]: Abstraction has 12285 states. [2021-01-26 14:47:17,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 12285 states. [2021-01-26 14:47:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:17,909 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:17,909 INFO L504 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] [2021-01-26 14:47:18,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-01-26 14:47:18,110 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:18,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1702804827, now seen corresponding path program 118 times [2021-01-26 14:47:18,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:18,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053925880] [2021-01-26 14:47:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:18,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053925880] [2021-01-26 14:47:18,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117577290] [2021-01-26 14:47:18,521 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 [2021-01-26 14:47:18,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:47:18,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:18,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:47:18,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:18,634 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:18,651 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:18,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:18,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:18,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699793415] [2021-01-26 14:47:18,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:18,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:18,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:18,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:18,669 INFO L87 Difference]: Start difference. First operand 12285 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:19,658 INFO L93 Difference]: Finished difference Result 12605 states and 28070 transitions. [2021-01-26 14:47:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:47:19,659 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:19,670 INFO L225 Difference]: With dead ends: 12605 [2021-01-26 14:47:19,670 INFO L226 Difference]: Without dead ends: 12335 [2021-01-26 14:47:19,671 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:47:19,671 INFO L78 Accepts]: Start accepts. Automaton has 12335 states. Word has length 106 [2021-01-26 14:47:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:19,671 INFO L481 AbstractCegarLoop]: Abstraction has 12335 states. [2021-01-26 14:47:19,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12335 states. [2021-01-26 14:47:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:19,682 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:19,682 INFO L504 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] [2021-01-26 14:47:19,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-01-26 14:47:19,887 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1206968457, now seen corresponding path program 119 times [2021-01-26 14:47:19,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:19,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541943540] [2021-01-26 14:47:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:20,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541943540] [2021-01-26 14:47:20,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273910691] [2021-01-26 14:47:20,235 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 [2021-01-26 14:47:20,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-26 14:47:20,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:20,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:20,341 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:20,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:20,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:20,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130902123] [2021-01-26 14:47:20,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:20,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:20,371 INFO L87 Difference]: Start difference. First operand 12335 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:21,222 INFO L93 Difference]: Finished difference Result 12655 states and 28170 transitions. [2021-01-26 14:47:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:47:21,223 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:21,236 INFO L225 Difference]: With dead ends: 12655 [2021-01-26 14:47:21,236 INFO L226 Difference]: Without dead ends: 12385 [2021-01-26 14:47:21,237 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:47:21,237 INFO L78 Accepts]: Start accepts. Automaton has 12385 states. Word has length 106 [2021-01-26 14:47:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:21,237 INFO L481 AbstractCegarLoop]: Abstraction has 12385 states. [2021-01-26 14:47:21,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 12385 states. [2021-01-26 14:47:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:21,249 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:21,249 INFO L504 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] [2021-01-26 14:47:21,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:21,451 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:21,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:21,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1910888281, now seen corresponding path program 120 times [2021-01-26 14:47:21,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:21,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878319474] [2021-01-26 14:47:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:21,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878319474] [2021-01-26 14:47:21,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513211935] [2021-01-26 14:47:21,830 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 [2021-01-26 14:47:21,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-26 14:47:21,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:21,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:21,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:21,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:21,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:21,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:21,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:21,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745263760] [2021-01-26 14:47:21,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:21,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:21,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:21,997 INFO L87 Difference]: Start difference. First operand 12385 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:22,733 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-01-26 14:47:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:23,238 INFO L93 Difference]: Finished difference Result 12705 states and 28270 transitions. [2021-01-26 14:47:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:47:23,238 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:23,251 INFO L225 Difference]: With dead ends: 12705 [2021-01-26 14:47:23,251 INFO L226 Difference]: Without dead ends: 12435 [2021-01-26 14:47:23,251 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:47:23,251 INFO L78 Accepts]: Start accepts. Automaton has 12435 states. Word has length 106 [2021-01-26 14:47:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:23,252 INFO L481 AbstractCegarLoop]: Abstraction has 12435 states. [2021-01-26 14:47:23,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 12435 states. [2021-01-26 14:47:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:23,262 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:23,262 INFO L504 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] [2021-01-26 14:47:23,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-01-26 14:47:23,463 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:23,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:23,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1499235321, now seen corresponding path program 121 times [2021-01-26 14:47:23,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:23,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772274318] [2021-01-26 14:47:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:23,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772274318] [2021-01-26 14:47:23,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343295144] [2021-01-26 14:47:23,802 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 [2021-01-26 14:47:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:23,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:23,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:23,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:23,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:23,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366102749] [2021-01-26 14:47:23,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:23,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:23,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:23,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:23,929 INFO L87 Difference]: Start difference. First operand 12435 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:24,842 INFO L93 Difference]: Finished difference Result 12755 states and 28370 transitions. [2021-01-26 14:47:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:47:24,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:24,855 INFO L225 Difference]: With dead ends: 12755 [2021-01-26 14:47:24,855 INFO L226 Difference]: Without dead ends: 12485 [2021-01-26 14:47:24,855 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=493, Invalid=1577, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:47:24,855 INFO L78 Accepts]: Start accepts. Automaton has 12485 states. Word has length 106 [2021-01-26 14:47:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:24,856 INFO L481 AbstractCegarLoop]: Abstraction has 12485 states. [2021-01-26 14:47:24,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12485 states. [2021-01-26 14:47:24,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:24,866 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:24,866 INFO L504 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] [2021-01-26 14:47:25,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-01-26 14:47:25,067 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2092452137, now seen corresponding path program 122 times [2021-01-26 14:47:25,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:25,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190101591] [2021-01-26 14:47:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:25,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190101591] [2021-01-26 14:47:25,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296327815] [2021-01-26 14:47:25,397 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 [2021-01-26 14:47:25,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:47:25,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:25,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:25,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:25,515 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:25,538 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:25,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:25,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:25,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586338319] [2021-01-26 14:47:25,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:25,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:25,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:25,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:25,556 INFO L87 Difference]: Start difference. First operand 12485 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:26,749 INFO L93 Difference]: Finished difference Result 12805 states and 28470 transitions. [2021-01-26 14:47:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:47:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:26,765 INFO L225 Difference]: With dead ends: 12805 [2021-01-26 14:47:26,765 INFO L226 Difference]: Without dead ends: 12535 [2021-01-26 14:47:26,765 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=576, Invalid=1874, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 14:47:26,766 INFO L78 Accepts]: Start accepts. Automaton has 12535 states. Word has length 106 [2021-01-26 14:47:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:26,766 INFO L481 AbstractCegarLoop]: Abstraction has 12535 states. [2021-01-26 14:47:26,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 12535 states. [2021-01-26 14:47:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:26,776 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:26,776 INFO L504 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] [2021-01-26 14:47:26,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:26,978 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:26,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2029829381, now seen corresponding path program 123 times [2021-01-26 14:47:26,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:26,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096169978] [2021-01-26 14:47:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:27,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096169978] [2021-01-26 14:47:27,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233226754] [2021-01-26 14:47:27,317 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 [2021-01-26 14:47:27,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-26 14:47:27,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:27,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:27,433 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:27,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:27,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:27,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012898110] [2021-01-26 14:47:27,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:27,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:27,448 INFO L87 Difference]: Start difference. First operand 12535 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:28,445 INFO L93 Difference]: Finished difference Result 12855 states and 28570 transitions. [2021-01-26 14:47:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:47:28,446 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:28,459 INFO L225 Difference]: With dead ends: 12855 [2021-01-26 14:47:28,459 INFO L226 Difference]: Without dead ends: 12585 [2021-01-26 14:47:28,459 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=550, Invalid=1706, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:47:28,459 INFO L78 Accepts]: Start accepts. Automaton has 12585 states. Word has length 106 [2021-01-26 14:47:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:28,460 INFO L481 AbstractCegarLoop]: Abstraction has 12585 states. [2021-01-26 14:47:28,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12585 states. [2021-01-26 14:47:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:28,470 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:28,470 INFO L504 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] [2021-01-26 14:47:28,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:28,671 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash -103466027, now seen corresponding path program 124 times [2021-01-26 14:47:28,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:28,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342008149] [2021-01-26 14:47:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:29,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342008149] [2021-01-26 14:47:29,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645323762] [2021-01-26 14:47:29,015 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 [2021-01-26 14:47:29,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:47:29,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:29,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:47:29,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:29,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:29,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:29,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:29,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:29,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492800963] [2021-01-26 14:47:29,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:29,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:29,333 INFO L87 Difference]: Start difference. First operand 12585 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:30,628 INFO L93 Difference]: Finished difference Result 12905 states and 28670 transitions. [2021-01-26 14:47:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:47:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:30,641 INFO L225 Difference]: With dead ends: 12905 [2021-01-26 14:47:30,641 INFO L226 Difference]: Without dead ends: 12635 [2021-01-26 14:47:30,642 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=641, Invalid=2011, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:47:30,642 INFO L78 Accepts]: Start accepts. Automaton has 12635 states. Word has length 106 [2021-01-26 14:47:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:30,642 INFO L481 AbstractCegarLoop]: Abstraction has 12635 states. [2021-01-26 14:47:30,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12635 states. [2021-01-26 14:47:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:30,652 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:30,652 INFO L504 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] [2021-01-26 14:47:30,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:30,853 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:30,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1787134851, now seen corresponding path program 125 times [2021-01-26 14:47:30,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:30,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821829041] [2021-01-26 14:47:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:31,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821829041] [2021-01-26 14:47:31,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028532587] [2021-01-26 14:47:31,175 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 [2021-01-26 14:47:31,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-26 14:47:31,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:31,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:31,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:31,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:31,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:31,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:31,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074683123] [2021-01-26 14:47:31,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:31,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:31,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:31,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:31,310 INFO L87 Difference]: Start difference. First operand 12635 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:32,382 INFO L93 Difference]: Finished difference Result 12955 states and 28770 transitions. [2021-01-26 14:47:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:47:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:32,395 INFO L225 Difference]: With dead ends: 12955 [2021-01-26 14:47:32,395 INFO L226 Difference]: Without dead ends: 12685 [2021-01-26 14:47:32,395 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=623, Invalid=1827, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 14:47:32,395 INFO L78 Accepts]: Start accepts. Automaton has 12685 states. Word has length 106 [2021-01-26 14:47:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:32,395 INFO L481 AbstractCegarLoop]: Abstraction has 12685 states. [2021-01-26 14:47:32,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states. [2021-01-26 14:47:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:32,406 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:32,406 INFO L504 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] [2021-01-26 14:47:32,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-01-26 14:47:32,606 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:32,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:32,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1286125997, now seen corresponding path program 126 times [2021-01-26 14:47:32,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:32,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106029259] [2021-01-26 14:47:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:32,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106029259] [2021-01-26 14:47:32,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095573060] [2021-01-26 14:47:32,939 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 [2021-01-26 14:47:33,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-26 14:47:33,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:33,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:33,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:33,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:33,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:33,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:33,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:33,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380937599] [2021-01-26 14:47:33,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:33,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:33,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:33,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:33,111 INFO L87 Difference]: Start difference. First operand 12685 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:34,482 INFO L93 Difference]: Finished difference Result 13005 states and 28870 transitions. [2021-01-26 14:47:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 14:47:34,483 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:34,494 INFO L225 Difference]: With dead ends: 13005 [2021-01-26 14:47:34,495 INFO L226 Difference]: Without dead ends: 12735 [2021-01-26 14:47:34,495 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=722, Invalid=2140, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:47:34,495 INFO L78 Accepts]: Start accepts. Automaton has 12735 states. Word has length 106 [2021-01-26 14:47:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:34,495 INFO L481 AbstractCegarLoop]: Abstraction has 12735 states. [2021-01-26 14:47:34,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12735 states. [2021-01-26 14:47:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:34,505 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:34,506 INFO L504 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] [2021-01-26 14:47:34,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-01-26 14:47:34,707 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1918807937, now seen corresponding path program 127 times [2021-01-26 14:47:34,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:34,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169820283] [2021-01-26 14:47:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:34,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169820283] [2021-01-26 14:47:35,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218746781] [2021-01-26 14:47:35,000 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 [2021-01-26 14:47:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:35,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:35,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:35,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:35,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:35,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689844036] [2021-01-26 14:47:35,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:35,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:35,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:35,120 INFO L87 Difference]: Start difference. First operand 12735 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:35,830 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-01-26 14:47:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:36,431 INFO L93 Difference]: Finished difference Result 13055 states and 28970 transitions. [2021-01-26 14:47:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:47:36,431 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:36,443 INFO L225 Difference]: With dead ends: 13055 [2021-01-26 14:47:36,443 INFO L226 Difference]: Without dead ends: 12785 [2021-01-26 14:47:36,444 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=712, Invalid=1940, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:47:36,444 INFO L78 Accepts]: Start accepts. Automaton has 12785 states. Word has length 106 [2021-01-26 14:47:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:36,444 INFO L481 AbstractCegarLoop]: Abstraction has 12785 states. [2021-01-26 14:47:36,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 12785 states. [2021-01-26 14:47:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:36,454 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:36,454 INFO L504 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] [2021-01-26 14:47:36,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:36,655 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1456556463, now seen corresponding path program 128 times [2021-01-26 14:47:36,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:36,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116703000] [2021-01-26 14:47:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116703000] [2021-01-26 14:47:36,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058444075] [2021-01-26 14:47:36,980 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 [2021-01-26 14:47:37,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:47:37,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:37,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:37,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:37,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:37,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:37,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:37,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-26 14:47:37,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176147218] [2021-01-26 14:47:37,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:37,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:37,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:37,128 INFO L87 Difference]: Start difference. First operand 12785 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:38,648 INFO L93 Difference]: Finished difference Result 13145 states and 29150 transitions. [2021-01-26 14:47:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-26 14:47:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2021-01-26 14:47:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:38,661 INFO L225 Difference]: With dead ends: 13145 [2021-01-26 14:47:38,662 INFO L226 Difference]: Without dead ends: 12875 [2021-01-26 14:47:38,662 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=819, Invalid=2261, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:47:38,662 INFO L78 Accepts]: Start accepts. Automaton has 12875 states. Word has length 106 [2021-01-26 14:47:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:38,662 INFO L481 AbstractCegarLoop]: Abstraction has 12875 states. [2021-01-26 14:47:38,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states. [2021-01-26 14:47:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:38,672 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:38,673 INFO L504 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] [2021-01-26 14:47:38,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-01-26 14:47:38,873 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1104480545, now seen corresponding path program 129 times [2021-01-26 14:47:38,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:38,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831842115] [2021-01-26 14:47:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:39,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831842115] [2021-01-26 14:47:39,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891974903] [2021-01-26 14:47:39,179 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 [2021-01-26 14:47:39,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-26 14:47:39,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:39,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:47:39,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:39,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:39,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:39,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-01-26 14:47:39,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013667526] [2021-01-26 14:47:39,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-26 14:47:39,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:39,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-26 14:47:39,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:47:39,316 INFO L87 Difference]: Start difference. First operand 12875 states. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:40,550 INFO L93 Difference]: Finished difference Result 14347 states and 32514 transitions. [2021-01-26 14:47:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-26 14:47:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2021-01-26 14:47:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:40,564 INFO L225 Difference]: With dead ends: 14347 [2021-01-26 14:47:40,564 INFO L226 Difference]: Without dead ends: 14077 [2021-01-26 14:47:40,564 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=818, Invalid=2044, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:47:40,565 INFO L78 Accepts]: Start accepts. Automaton has 14077 states. Word has length 106 [2021-01-26 14:47:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:40,565 INFO L481 AbstractCegarLoop]: Abstraction has 14077 states. [2021-01-26 14:47:40,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 14077 states. [2021-01-26 14:47:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-26 14:47:40,575 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:40,575 INFO L504 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] [2021-01-26 14:47:40,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-01-26 14:47:40,776 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:40,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1107453775, now seen corresponding path program 130 times [2021-01-26 14:47:40,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:40,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465408638] [2021-01-26 14:47:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:41,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465408638] [2021-01-26 14:47:41,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761578471] [2021-01-26 14:47:41,112 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 [2021-01-26 14:47:41,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:47:41,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:41,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:47:41,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:41,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:41,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:41,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:41,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-26 14:47:41,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107110584] [2021-01-26 14:47:41,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:47:41,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:41,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:47:41,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:47:41,275 INFO L87 Difference]: Start difference. First operand 14077 states. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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) [2021-01-26 14:47:42,792 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-01-26 14:47:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:43,169 INFO L93 Difference]: Finished difference Result 13885 states and 30996 transitions. [2021-01-26 14:47:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-26 14:47:43,170 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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 [2021-01-26 14:47:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:43,180 INFO L225 Difference]: With dead ends: 13885 [2021-01-26 14:47:43,180 INFO L226 Difference]: Without dead ends: 13230 [2021-01-26 14:47:43,181 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2021-01-26 14:47:43,181 INFO L78 Accepts]: Start accepts. Automaton has 13230 states. Word has length 106 [2021-01-26 14:47:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:43,181 INFO L481 AbstractCegarLoop]: Abstraction has 13230 states. [2021-01-26 14:47:43,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 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) [2021-01-26 14:47:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13230 states. [2021-01-26 14:47:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:43,192 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:43,192 INFO L504 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] [2021-01-26 14:47:43,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-01-26 14:47:43,393 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:43,393 INFO L82 PathProgramCache]: Analyzing trace with hash -485429072, now seen corresponding path program 131 times [2021-01-26 14:47:43,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:43,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265275102] [2021-01-26 14:47:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:43,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265275102] [2021-01-26 14:47:43,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266546370] [2021-01-26 14:47:43,821 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 [2021-01-26 14:47:43,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-26 14:47:43,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:43,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:43,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:43,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:43,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:43,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:47:43,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494862663] [2021-01-26 14:47:43,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:43,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:43,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:43,936 INFO L87 Difference]: Start difference. First operand 13230 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:44,624 INFO L93 Difference]: Finished difference Result 13550 states and 30090 transitions. [2021-01-26 14:47:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:47:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:47:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:44,638 INFO L225 Difference]: With dead ends: 13550 [2021-01-26 14:47:44,639 INFO L226 Difference]: Without dead ends: 13280 [2021-01-26 14:47:44,639 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=466, Invalid=1174, Unknown=0, NotChecked=0, Total=1640 [2021-01-26 14:47:44,639 INFO L78 Accepts]: Start accepts. Automaton has 13280 states. Word has length 111 [2021-01-26 14:47:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:44,639 INFO L481 AbstractCegarLoop]: Abstraction has 13280 states. [2021-01-26 14:47:44,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 13280 states. [2021-01-26 14:47:44,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:44,651 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:44,651 INFO L504 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] [2021-01-26 14:47:44,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:44,852 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1361717374, now seen corresponding path program 132 times [2021-01-26 14:47:44,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:44,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680649832] [2021-01-26 14:47:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:45,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680649832] [2021-01-26 14:47:45,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860125906] [2021-01-26 14:47:45,305 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 [2021-01-26 14:47:45,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-26 14:47:45,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:45,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:45,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:45,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:45,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:45,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:45,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:47:45,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157621324] [2021-01-26 14:47:45,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:47:45,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:45,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:47:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:47:45,464 INFO L87 Difference]: Start difference. First operand 13280 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:46,250 INFO L93 Difference]: Finished difference Result 13600 states and 30190 transitions. [2021-01-26 14:47:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-26 14:47:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:47:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:46,264 INFO L225 Difference]: With dead ends: 13600 [2021-01-26 14:47:46,264 INFO L226 Difference]: Without dead ends: 13330 [2021-01-26 14:47:46,264 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=489, Invalid=1403, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:47:46,264 INFO L78 Accepts]: Start accepts. Automaton has 13330 states. Word has length 111 [2021-01-26 14:47:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:46,265 INFO L481 AbstractCegarLoop]: Abstraction has 13330 states. [2021-01-26 14:47:46,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states. [2021-01-26 14:47:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:46,276 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:46,276 INFO L504 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] [2021-01-26 14:47:46,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:46,477 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:46,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash 773963676, now seen corresponding path program 133 times [2021-01-26 14:47:46,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:46,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309757094] [2021-01-26 14:47:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:46,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309757094] [2021-01-26 14:47:46,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990780668] [2021-01-26 14:47:46,905 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 [2021-01-26 14:47:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:46,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:46,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:47,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:47,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:47,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:47:47,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416927708] [2021-01-26 14:47:47,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:47,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:47,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:47,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:47,031 INFO L87 Difference]: Start difference. First operand 13330 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:47,854 INFO L93 Difference]: Finished difference Result 13650 states and 30290 transitions. [2021-01-26 14:47:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:47:47,854 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:47:47,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:47,867 INFO L225 Difference]: With dead ends: 13650 [2021-01-26 14:47:47,867 INFO L226 Difference]: Without dead ends: 13380 [2021-01-26 14:47:47,868 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:47:47,868 INFO L78 Accepts]: Start accepts. Automaton has 13380 states. Word has length 111 [2021-01-26 14:47:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:47,868 INFO L481 AbstractCegarLoop]: Abstraction has 13380 states. [2021-01-26 14:47:47,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 13380 states. [2021-01-26 14:47:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:47,880 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:47,880 INFO L504 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] [2021-01-26 14:47:48,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:48,081 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash 239545964, now seen corresponding path program 134 times [2021-01-26 14:47:48,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:48,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614885508] [2021-01-26 14:47:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:48,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614885508] [2021-01-26 14:47:48,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78754568] [2021-01-26 14:47:48,526 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 [2021-01-26 14:47:48,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:47:48,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:48,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:48,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:48,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:48,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:48,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:48,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:47:48,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073128367] [2021-01-26 14:47:48,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:47:48,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:48,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:47:48,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:47:48,675 INFO L87 Difference]: Start difference. First operand 13380 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:49,756 INFO L93 Difference]: Finished difference Result 13750 states and 30490 transitions. [2021-01-26 14:47:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:47:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:47:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:49,770 INFO L225 Difference]: With dead ends: 13750 [2021-01-26 14:47:49,770 INFO L226 Difference]: Without dead ends: 13480 [2021-01-26 14:47:49,770 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2021-01-26 14:47:49,771 INFO L78 Accepts]: Start accepts. Automaton has 13480 states. Word has length 111 [2021-01-26 14:47:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:49,771 INFO L481 AbstractCegarLoop]: Abstraction has 13480 states. [2021-01-26 14:47:49,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 13480 states. [2021-01-26 14:47:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:49,782 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:49,783 INFO L504 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] [2021-01-26 14:47:49,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2021-01-26 14:47:49,983 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash 264351770, now seen corresponding path program 135 times [2021-01-26 14:47:49,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:49,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187112609] [2021-01-26 14:47:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:50,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187112609] [2021-01-26 14:47:50,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74874877] [2021-01-26 14:47:50,388 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 [2021-01-26 14:47:50,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-26 14:47:50,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:50,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:50,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:50,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:50,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:50,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:47:50,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618834369] [2021-01-26 14:47:50,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:50,516 INFO L87 Difference]: Start difference. First operand 13480 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:51,399 INFO L93 Difference]: Finished difference Result 13800 states and 30590 transitions. [2021-01-26 14:47:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:47:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:47:51,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:51,413 INFO L225 Difference]: With dead ends: 13800 [2021-01-26 14:47:51,413 INFO L226 Difference]: Without dead ends: 13530 [2021-01-26 14:47:51,413 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-01-26 14:47:51,413 INFO L78 Accepts]: Start accepts. Automaton has 13530 states. Word has length 111 [2021-01-26 14:47:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:51,414 INFO L481 AbstractCegarLoop]: Abstraction has 13530 states. [2021-01-26 14:47:51,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states. [2021-01-26 14:47:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:51,425 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:51,426 INFO L504 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] [2021-01-26 14:47:51,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:51,628 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash 374104810, now seen corresponding path program 136 times [2021-01-26 14:47:51,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:51,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219283617] [2021-01-26 14:47:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:52,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219283617] [2021-01-26 14:47:52,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482249514] [2021-01-26 14:47:52,071 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 [2021-01-26 14:47:52,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:47:52,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:52,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:47:52,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:52,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:52,219 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:52,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:52,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:47:52,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416433940] [2021-01-26 14:47:52,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:47:52,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:52,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:47:52,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:47:52,238 INFO L87 Difference]: Start difference. First operand 13530 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:53,308 INFO L93 Difference]: Finished difference Result 13850 states and 30690 transitions. [2021-01-26 14:47:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:47:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:47:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:53,322 INFO L225 Difference]: With dead ends: 13850 [2021-01-26 14:47:53,323 INFO L226 Difference]: Without dead ends: 13580 [2021-01-26 14:47:53,323 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:47:53,323 INFO L78 Accepts]: Start accepts. Automaton has 13580 states. Word has length 111 [2021-01-26 14:47:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:53,323 INFO L481 AbstractCegarLoop]: Abstraction has 13580 states. [2021-01-26 14:47:53,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13580 states. [2021-01-26 14:47:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:53,335 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:53,335 INFO L504 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] [2021-01-26 14:47:53,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-01-26 14:47:53,536 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:53,537 INFO L82 PathProgramCache]: Analyzing trace with hash -121731560, now seen corresponding path program 137 times [2021-01-26 14:47:53,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:53,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441250278] [2021-01-26 14:47:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:53,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441250278] [2021-01-26 14:47:53,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805417403] [2021-01-26 14:47:53,919 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 [2021-01-26 14:47:54,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-26 14:47:54,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:54,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:54,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:54,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:54,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:54,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:47:54,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715697261] [2021-01-26 14:47:54,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:54,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:54,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:54,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:54,055 INFO L87 Difference]: Start difference. First operand 13580 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:55,019 INFO L93 Difference]: Finished difference Result 13900 states and 30790 transitions. [2021-01-26 14:47:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:47:55,020 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:47:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:55,033 INFO L225 Difference]: With dead ends: 13900 [2021-01-26 14:47:55,033 INFO L226 Difference]: Without dead ends: 13630 [2021-01-26 14:47:55,034 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:47:55,034 INFO L78 Accepts]: Start accepts. Automaton has 13630 states. Word has length 111 [2021-01-26 14:47:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:55,034 INFO L481 AbstractCegarLoop]: Abstraction has 13630 states. [2021-01-26 14:47:55,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 13630 states. [2021-01-26 14:47:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:55,046 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:55,046 INFO L504 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] [2021-01-26 14:47:55,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:47:55,247 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 582188264, now seen corresponding path program 138 times [2021-01-26 14:47:55,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:55,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690621326] [2021-01-26 14:47:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:55,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690621326] [2021-01-26 14:47:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130814723] [2021-01-26 14:47:55,827 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 [2021-01-26 14:47:55,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-26 14:47:55,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:55,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:55,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:55,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:55,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:55,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:47:55,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306872941] [2021-01-26 14:47:55,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:47:55,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:47:55,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:47:55,986 INFO L87 Difference]: Start difference. First operand 13630 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:57,154 INFO L93 Difference]: Finished difference Result 13950 states and 30890 transitions. [2021-01-26 14:47:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:47:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:47:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:57,167 INFO L225 Difference]: With dead ends: 13950 [2021-01-26 14:47:57,168 INFO L226 Difference]: Without dead ends: 13680 [2021-01-26 14:47:57,168 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2021-01-26 14:47:57,168 INFO L78 Accepts]: Start accepts. Automaton has 13680 states. Word has length 111 [2021-01-26 14:47:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:57,168 INFO L481 AbstractCegarLoop]: Abstraction has 13680 states. [2021-01-26 14:47:57,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 13680 states. [2021-01-26 14:47:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:57,180 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:57,180 INFO L504 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] [2021-01-26 14:47:57,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-01-26 14:47:57,381 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:57,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1467031958, now seen corresponding path program 139 times [2021-01-26 14:47:57,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:57,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013201542] [2021-01-26 14:47:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:57,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013201542] [2021-01-26 14:47:57,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823616778] [2021-01-26 14:47:57,841 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 [2021-01-26 14:47:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:57,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:57,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:58,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:58,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:47:58,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127704034] [2021-01-26 14:47:58,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:47:58,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:47:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:47:58,006 INFO L87 Difference]: Start difference. First operand 13680 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:47:59,041 INFO L93 Difference]: Finished difference Result 14000 states and 30990 transitions. [2021-01-26 14:47:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:47:59,042 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:47:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:47:59,055 INFO L225 Difference]: With dead ends: 14000 [2021-01-26 14:47:59,055 INFO L226 Difference]: Without dead ends: 13730 [2021-01-26 14:47:59,055 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-01-26 14:47:59,055 INFO L78 Accepts]: Start accepts. Automaton has 13730 states. Word has length 111 [2021-01-26 14:47:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:47:59,056 INFO L481 AbstractCegarLoop]: Abstraction has 13730 states. [2021-01-26 14:47:59,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:47:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 13730 states. [2021-01-26 14:47:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:47:59,067 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:47:59,067 INFO L504 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] [2021-01-26 14:47:59,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-01-26 14:47:59,268 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:47:59,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:47:59,269 INFO L82 PathProgramCache]: Analyzing trace with hash 873815142, now seen corresponding path program 140 times [2021-01-26 14:47:59,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:47:59,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024829586] [2021-01-26 14:47:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:47:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:47:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:59,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024829586] [2021-01-26 14:47:59,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741313702] [2021-01-26 14:47:59,648 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 [2021-01-26 14:47:59,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:47:59,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:47:59,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:47:59,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:47:59,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:47:59,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:47:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:47:59,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:47:59,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:47:59,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850066616] [2021-01-26 14:47:59,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:47:59,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:47:59,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:47:59,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:47:59,799 INFO L87 Difference]: Start difference. First operand 13730 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:01,091 INFO L93 Difference]: Finished difference Result 14050 states and 31090 transitions. [2021-01-26 14:48:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:48:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:48:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:01,105 INFO L225 Difference]: With dead ends: 14050 [2021-01-26 14:48:01,105 INFO L226 Difference]: Without dead ends: 13780 [2021-01-26 14:48:01,106 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2021-01-26 14:48:01,106 INFO L78 Accepts]: Start accepts. Automaton has 13780 states. Word has length 111 [2021-01-26 14:48:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:01,106 INFO L481 AbstractCegarLoop]: Abstraction has 13780 states. [2021-01-26 14:48:01,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13780 states. [2021-01-26 14:48:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:01,118 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:01,118 INFO L504 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] [2021-01-26 14:48:01,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:01,319 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash 701129364, now seen corresponding path program 141 times [2021-01-26 14:48:01,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:01,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436168374] [2021-01-26 14:48:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:01,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436168374] [2021-01-26 14:48:01,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162803406] [2021-01-26 14:48:01,685 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 [2021-01-26 14:48:01,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-26 14:48:01,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:01,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:48:01,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:01,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:01,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:01,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:48:01,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105200369] [2021-01-26 14:48:01,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:48:01,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:01,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:48:01,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:48:01,986 INFO L87 Difference]: Start difference. First operand 13780 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:03,107 INFO L93 Difference]: Finished difference Result 14100 states and 31190 transitions. [2021-01-26 14:48:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:48:03,108 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:48:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:03,121 INFO L225 Difference]: With dead ends: 14100 [2021-01-26 14:48:03,121 INFO L226 Difference]: Without dead ends: 13830 [2021-01-26 14:48:03,122 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-01-26 14:48:03,122 INFO L78 Accepts]: Start accepts. Automaton has 13830 states. Word has length 111 [2021-01-26 14:48:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:03,122 INFO L481 AbstractCegarLoop]: Abstraction has 13830 states. [2021-01-26 14:48:03,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 13830 states. [2021-01-26 14:48:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:03,136 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:03,136 INFO L504 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] [2021-01-26 14:48:03,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-01-26 14:48:03,337 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1432166044, now seen corresponding path program 142 times [2021-01-26 14:48:03,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:03,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376749214] [2021-01-26 14:48:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:03,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376749214] [2021-01-26 14:48:03,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288360336] [2021-01-26 14:48:03,713 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 [2021-01-26 14:48:03,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:48:03,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:48:03,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:03,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:03,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:03,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:03,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:48:03,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036480703] [2021-01-26 14:48:03,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:03,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:03,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:03,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:03,865 INFO L87 Difference]: Start difference. First operand 13830 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:05,281 INFO L93 Difference]: Finished difference Result 14150 states and 31290 transitions. [2021-01-26 14:48:05,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 14:48:05,281 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:48:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:05,295 INFO L225 Difference]: With dead ends: 14150 [2021-01-26 14:48:05,295 INFO L226 Difference]: Without dead ends: 13880 [2021-01-26 14:48:05,296 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2021-01-26 14:48:05,296 INFO L78 Accepts]: Start accepts. Automaton has 13880 states. Word has length 111 [2021-01-26 14:48:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:05,296 INFO L481 AbstractCegarLoop]: Abstraction has 13880 states. [2021-01-26 14:48:05,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13880 states. [2021-01-26 14:48:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:05,308 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:05,308 INFO L504 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] [2021-01-26 14:48:05,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:05,511 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:05,511 INFO L82 PathProgramCache]: Analyzing trace with hash 458434834, now seen corresponding path program 143 times [2021-01-26 14:48:05,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:05,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809513959] [2021-01-26 14:48:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:05,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809513959] [2021-01-26 14:48:05,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318741110] [2021-01-26 14:48:05,863 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 [2021-01-26 14:48:05,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-26 14:48:05,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:05,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:48:05,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:05,974 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:05,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:05,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:48:05,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128350981] [2021-01-26 14:48:05,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:48:05,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:05,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:48:05,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:48:05,989 INFO L87 Difference]: Start difference. First operand 13880 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:07,220 INFO L93 Difference]: Finished difference Result 14200 states and 31390 transitions. [2021-01-26 14:48:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-26 14:48:07,221 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:48:07,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:07,234 INFO L225 Difference]: With dead ends: 14200 [2021-01-26 14:48:07,235 INFO L226 Difference]: Without dead ends: 13930 [2021-01-26 14:48:07,235 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-01-26 14:48:07,235 INFO L78 Accepts]: Start accepts. Automaton has 13930 states. Word has length 111 [2021-01-26 14:48:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:07,235 INFO L481 AbstractCegarLoop]: Abstraction has 13930 states. [2021-01-26 14:48:07,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13930 states. [2021-01-26 14:48:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:07,247 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:07,247 INFO L504 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] [2021-01-26 14:48:07,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:07,448 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1680141282, now seen corresponding path program 144 times [2021-01-26 14:48:07,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:07,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554605184] [2021-01-26 14:48:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:07,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554605184] [2021-01-26 14:48:07,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850554610] [2021-01-26 14:48:07,804 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 [2021-01-26 14:48:07,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-26 14:48:07,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:48:07,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:07,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:07,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:07,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:07,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:48:07,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004054280] [2021-01-26 14:48:07,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:07,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:07,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:07,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:07,965 INFO L87 Difference]: Start difference. First operand 13930 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:08,161 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2021-01-26 14:48:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:09,671 INFO L93 Difference]: Finished difference Result 14250 states and 31490 transitions. [2021-01-26 14:48:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-26 14:48:09,671 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:48:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:09,685 INFO L225 Difference]: With dead ends: 14250 [2021-01-26 14:48:09,685 INFO L226 Difference]: Without dead ends: 13980 [2021-01-26 14:48:09,685 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2021-01-26 14:48:09,686 INFO L78 Accepts]: Start accepts. Automaton has 13980 states. Word has length 111 [2021-01-26 14:48:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:09,686 INFO L481 AbstractCegarLoop]: Abstraction has 13980 states. [2021-01-26 14:48:09,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 13980 states. [2021-01-26 14:48:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:09,698 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:09,698 INFO L504 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] [2021-01-26 14:48:09,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:09,898 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash 590107920, now seen corresponding path program 145 times [2021-01-26 14:48:09,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:09,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404989044] [2021-01-26 14:48:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:10,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404989044] [2021-01-26 14:48:10,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151061961] [2021-01-26 14:48:10,269 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 [2021-01-26 14:48:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:10,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:48:10,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:10,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:10,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:10,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:48:10,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874348707] [2021-01-26 14:48:10,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:48:10,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:48:10,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:48:10,398 INFO L87 Difference]: Start difference. First operand 13980 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:11,725 INFO L93 Difference]: Finished difference Result 14300 states and 31590 transitions. [2021-01-26 14:48:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-26 14:48:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:48:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:11,740 INFO L225 Difference]: With dead ends: 14300 [2021-01-26 14:48:11,740 INFO L226 Difference]: Without dead ends: 14030 [2021-01-26 14:48:11,741 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-01-26 14:48:11,741 INFO L78 Accepts]: Start accepts. Automaton has 14030 states. Word has length 111 [2021-01-26 14:48:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:11,741 INFO L481 AbstractCegarLoop]: Abstraction has 14030 states. [2021-01-26 14:48:11,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14030 states. [2021-01-26 14:48:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:11,753 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:11,753 INFO L504 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] [2021-01-26 14:48:11,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:11,954 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:11,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:11,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1509710816, now seen corresponding path program 146 times [2021-01-26 14:48:11,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:11,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290498936] [2021-01-26 14:48:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290498936] [2021-01-26 14:48:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121061262] [2021-01-26 14:48:12,321 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 [2021-01-26 14:48:12,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:48:12,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:12,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:48:12,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:12,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:12,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:12,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:12,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-26 14:48:12,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280366753] [2021-01-26 14:48:12,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:12,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:12,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:12,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:12,475 INFO L87 Difference]: Start difference. First operand 14030 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:14,458 INFO L93 Difference]: Finished difference Result 14734 states and 32714 transitions. [2021-01-26 14:48:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-26 14:48:14,459 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2021-01-26 14:48:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:14,472 INFO L225 Difference]: With dead ends: 14734 [2021-01-26 14:48:14,473 INFO L226 Difference]: Without dead ends: 14150 [2021-01-26 14:48:14,473 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=934, Invalid=2726, Unknown=0, NotChecked=0, Total=3660 [2021-01-26 14:48:14,473 INFO L78 Accepts]: Start accepts. Automaton has 14150 states. Word has length 111 [2021-01-26 14:48:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:14,473 INFO L481 AbstractCegarLoop]: Abstraction has 14150 states. [2021-01-26 14:48:14,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states. [2021-01-26 14:48:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:14,485 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:14,485 INFO L504 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] [2021-01-26 14:48:14,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2021-01-26 14:48:14,686 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1861786734, now seen corresponding path program 147 times [2021-01-26 14:48:14,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:14,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542887856] [2021-01-26 14:48:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:15,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542887856] [2021-01-26 14:48:15,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552932929] [2021-01-26 14:48:15,034 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 [2021-01-26 14:48:15,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-26 14:48:15,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:15,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-26 14:48:15,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:15,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:15,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:15,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-01-26 14:48:15,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108478803] [2021-01-26 14:48:15,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-26 14:48:15,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:15,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-26 14:48:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:48:15,337 INFO L87 Difference]: Start difference. First operand 14150 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:16,787 INFO L93 Difference]: Finished difference Result 15622 states and 35244 transitions. [2021-01-26 14:48:16,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-26 14:48:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2021-01-26 14:48:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:16,803 INFO L225 Difference]: With dead ends: 15622 [2021-01-26 14:48:16,803 INFO L226 Difference]: Without dead ends: 15337 [2021-01-26 14:48:16,803 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-01-26 14:48:16,803 INFO L78 Accepts]: Start accepts. Automaton has 15337 states. Word has length 111 [2021-01-26 14:48:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:16,804 INFO L481 AbstractCegarLoop]: Abstraction has 15337 states. [2021-01-26 14:48:16,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states. [2021-01-26 14:48:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-26 14:48:16,816 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:16,816 INFO L504 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] [2021-01-26 14:48:17,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-01-26 14:48:17,016 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:17,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1858813504, now seen corresponding path program 148 times [2021-01-26 14:48:17,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:17,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997658680] [2021-01-26 14:48:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:17,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997658680] [2021-01-26 14:48:17,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298293608] [2021-01-26 14:48:17,382 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 [2021-01-26 14:48:17,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:48:17,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:17,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:48:17,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:17,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:17,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:17,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:17,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-01-26 14:48:17,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333834247] [2021-01-26 14:48:17,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:17,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:17,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:17,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:17,549 INFO L87 Difference]: Start difference. First operand 15337 states. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 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) [2021-01-26 14:48:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:19,426 INFO L93 Difference]: Finished difference Result 15270 states and 33981 transitions. [2021-01-26 14:48:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-26 14:48:19,427 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 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 [2021-01-26 14:48:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:19,440 INFO L225 Difference]: With dead ends: 15270 [2021-01-26 14:48:19,440 INFO L226 Difference]: Without dead ends: 14585 [2021-01-26 14:48:19,441 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1100, Invalid=3060, Unknown=0, NotChecked=0, Total=4160 [2021-01-26 14:48:19,441 INFO L78 Accepts]: Start accepts. Automaton has 14585 states. Word has length 111 [2021-01-26 14:48:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:19,441 INFO L481 AbstractCegarLoop]: Abstraction has 14585 states. [2021-01-26 14:48:19,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 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) [2021-01-26 14:48:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14585 states. [2021-01-26 14:48:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:19,454 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:19,454 INFO L504 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] [2021-01-26 14:48:19,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-01-26 14:48:19,657 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:19,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2040084432, now seen corresponding path program 149 times [2021-01-26 14:48:19,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:19,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583086489] [2021-01-26 14:48:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:20,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583086489] [2021-01-26 14:48:20,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21256093] [2021-01-26 14:48:20,144 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 [2021-01-26 14:48:20,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:48:20,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:20,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:20,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:20,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:20,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:20,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:20,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817248845] [2021-01-26 14:48:20,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:20,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:20,271 INFO L87 Difference]: Start difference. First operand 14585 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:21,114 INFO L93 Difference]: Finished difference Result 14905 states and 33000 transitions. [2021-01-26 14:48:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:48:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:21,129 INFO L225 Difference]: With dead ends: 14905 [2021-01-26 14:48:21,129 INFO L226 Difference]: Without dead ends: 14635 [2021-01-26 14:48:21,130 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2021-01-26 14:48:21,130 INFO L78 Accepts]: Start accepts. Automaton has 14635 states. Word has length 116 [2021-01-26 14:48:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:21,130 INFO L481 AbstractCegarLoop]: Abstraction has 14635 states. [2021-01-26 14:48:21,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14635 states. [2021-01-26 14:48:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:21,143 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:21,143 INFO L504 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] [2021-01-26 14:48:21,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-01-26 14:48:21,344 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1163796130, now seen corresponding path program 150 times [2021-01-26 14:48:21,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:21,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734004419] [2021-01-26 14:48:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:22,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734004419] [2021-01-26 14:48:22,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778598233] [2021-01-26 14:48:22,007 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 [2021-01-26 14:48:22,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:48:22,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:22,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:22,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:22,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:22,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:22,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:22,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:22,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737733543] [2021-01-26 14:48:22,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:22,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:22,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:22,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:22,184 INFO L87 Difference]: Start difference. First operand 14635 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:23,150 INFO L93 Difference]: Finished difference Result 14955 states and 33100 transitions. [2021-01-26 14:48:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:48:23,151 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:23,166 INFO L225 Difference]: With dead ends: 14955 [2021-01-26 14:48:23,166 INFO L226 Difference]: Without dead ends: 14685 [2021-01-26 14:48:23,166 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:48:23,166 INFO L78 Accepts]: Start accepts. Automaton has 14685 states. Word has length 116 [2021-01-26 14:48:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:23,167 INFO L481 AbstractCegarLoop]: Abstraction has 14685 states. [2021-01-26 14:48:23,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14685 states. [2021-01-26 14:48:23,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:23,179 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:23,179 INFO L504 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] [2021-01-26 14:48:23,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-01-26 14:48:23,380 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash -995490116, now seen corresponding path program 151 times [2021-01-26 14:48:23,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:23,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510836619] [2021-01-26 14:48:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:23,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510836619] [2021-01-26 14:48:23,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215395381] [2021-01-26 14:48:23,836 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 [2021-01-26 14:48:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:23,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:23,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:23,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:23,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:23,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:23,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701946408] [2021-01-26 14:48:23,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:23,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:23,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:23,963 INFO L87 Difference]: Start difference. First operand 14685 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:24,920 INFO L93 Difference]: Finished difference Result 15005 states and 33200 transitions. [2021-01-26 14:48:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:48:24,920 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:24,934 INFO L225 Difference]: With dead ends: 15005 [2021-01-26 14:48:24,935 INFO L226 Difference]: Without dead ends: 14735 [2021-01-26 14:48:24,935 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:48:24,935 INFO L78 Accepts]: Start accepts. Automaton has 14735 states. Word has length 116 [2021-01-26 14:48:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:24,935 INFO L481 AbstractCegarLoop]: Abstraction has 14735 states. [2021-01-26 14:48:24,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 14735 states. [2021-01-26 14:48:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:24,948 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:24,948 INFO L504 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] [2021-01-26 14:48:25,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2021-01-26 14:48:25,149 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:25,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:25,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1529907828, now seen corresponding path program 152 times [2021-01-26 14:48:25,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:25,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558985374] [2021-01-26 14:48:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:25,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558985374] [2021-01-26 14:48:25,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751668214] [2021-01-26 14:48:25,629 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 [2021-01-26 14:48:25,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:48:25,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:25,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:25,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:25,746 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:25,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:25,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:25,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:25,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198954733] [2021-01-26 14:48:25,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:25,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:25,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:25,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:25,784 INFO L87 Difference]: Start difference. First operand 14735 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:26,908 INFO L93 Difference]: Finished difference Result 15055 states and 33300 transitions. [2021-01-26 14:48:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:48:26,908 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:26,923 INFO L225 Difference]: With dead ends: 15055 [2021-01-26 14:48:26,923 INFO L226 Difference]: Without dead ends: 14785 [2021-01-26 14:48:26,924 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 14:48:26,924 INFO L78 Accepts]: Start accepts. Automaton has 14785 states. Word has length 116 [2021-01-26 14:48:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:26,924 INFO L481 AbstractCegarLoop]: Abstraction has 14785 states. [2021-01-26 14:48:26,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 14785 states. [2021-01-26 14:48:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:26,937 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:26,937 INFO L504 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] [2021-01-26 14:48:27,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:27,137 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1505102022, now seen corresponding path program 153 times [2021-01-26 14:48:27,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:27,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47581250] [2021-01-26 14:48:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:27,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47581250] [2021-01-26 14:48:27,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264729109] [2021-01-26 14:48:27,575 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 [2021-01-26 14:48:27,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-26 14:48:27,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:27,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:27,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:27,692 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:27,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:27,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:27,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241811531] [2021-01-26 14:48:27,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:27,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:27,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:27,712 INFO L87 Difference]: Start difference. First operand 14785 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:28,872 INFO L93 Difference]: Finished difference Result 15105 states and 33400 transitions. [2021-01-26 14:48:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:48:28,873 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:28,888 INFO L225 Difference]: With dead ends: 15105 [2021-01-26 14:48:28,888 INFO L226 Difference]: Without dead ends: 14835 [2021-01-26 14:48:28,889 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:48:28,889 INFO L78 Accepts]: Start accepts. Automaton has 14835 states. Word has length 116 [2021-01-26 14:48:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:28,889 INFO L481 AbstractCegarLoop]: Abstraction has 14835 states. [2021-01-26 14:48:28,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 14835 states. [2021-01-26 14:48:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:28,902 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:28,902 INFO L504 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] [2021-01-26 14:48:29,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:29,103 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:29,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1395348982, now seen corresponding path program 154 times [2021-01-26 14:48:29,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:29,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111107562] [2021-01-26 14:48:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:29,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111107562] [2021-01-26 14:48:29,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637033087] [2021-01-26 14:48:29,560 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 [2021-01-26 14:48:29,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:48:29,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:29,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:48:29,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:29,681 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:29,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:29,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:29,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:29,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928782199] [2021-01-26 14:48:29,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:29,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:29,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:29,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:29,719 INFO L87 Difference]: Start difference. First operand 14835 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:30,947 INFO L93 Difference]: Finished difference Result 15155 states and 33500 transitions. [2021-01-26 14:48:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:48:30,948 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:30,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:30,962 INFO L225 Difference]: With dead ends: 15155 [2021-01-26 14:48:30,963 INFO L226 Difference]: Without dead ends: 14885 [2021-01-26 14:48:30,963 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:48:30,963 INFO L78 Accepts]: Start accepts. Automaton has 14885 states. Word has length 116 [2021-01-26 14:48:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:30,963 INFO L481 AbstractCegarLoop]: Abstraction has 14885 states. [2021-01-26 14:48:30,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 14885 states. [2021-01-26 14:48:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:30,976 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:30,976 INFO L504 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] [2021-01-26 14:48:31,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:31,177 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1891185352, now seen corresponding path program 155 times [2021-01-26 14:48:31,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:31,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257039729] [2021-01-26 14:48:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:31,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257039729] [2021-01-26 14:48:31,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91307031] [2021-01-26 14:48:31,601 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 [2021-01-26 14:48:31,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:48:31,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:31,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:31,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:31,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:31,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:31,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:31,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779397796] [2021-01-26 14:48:31,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:31,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:31,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:31,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:31,737 INFO L87 Difference]: Start difference. First operand 14885 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:32,844 INFO L93 Difference]: Finished difference Result 15205 states and 33600 transitions. [2021-01-26 14:48:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:48:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:32,860 INFO L225 Difference]: With dead ends: 15205 [2021-01-26 14:48:32,860 INFO L226 Difference]: Without dead ends: 14935 [2021-01-26 14:48:32,861 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 14:48:32,861 INFO L78 Accepts]: Start accepts. Automaton has 14935 states. Word has length 116 [2021-01-26 14:48:32,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:32,861 INFO L481 AbstractCegarLoop]: Abstraction has 14935 states. [2021-01-26 14:48:32,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states. [2021-01-26 14:48:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:32,876 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:32,877 INFO L504 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] [2021-01-26 14:48:33,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:33,078 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:33,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1187265528, now seen corresponding path program 156 times [2021-01-26 14:48:33,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:33,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342954946] [2021-01-26 14:48:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:33,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342954946] [2021-01-26 14:48:33,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670314528] [2021-01-26 14:48:33,517 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 [2021-01-26 14:48:33,609 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:48:33,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:33,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:33,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:33,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:33,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:33,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:33,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:33,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499433186] [2021-01-26 14:48:33,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:33,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:33,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:33,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:33,689 INFO L87 Difference]: Start difference. First operand 14935 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:35,234 INFO L93 Difference]: Finished difference Result 15255 states and 33700 transitions. [2021-01-26 14:48:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:48:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:35,252 INFO L225 Difference]: With dead ends: 15255 [2021-01-26 14:48:35,252 INFO L226 Difference]: Without dead ends: 14985 [2021-01-26 14:48:35,253 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:48:35,253 INFO L78 Accepts]: Start accepts. Automaton has 14985 states. Word has length 116 [2021-01-26 14:48:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:35,253 INFO L481 AbstractCegarLoop]: Abstraction has 14985 states. [2021-01-26 14:48:35,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 14985 states. [2021-01-26 14:48:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:35,271 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:35,271 INFO L504 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] [2021-01-26 14:48:35,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:35,485 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash -302421834, now seen corresponding path program 157 times [2021-01-26 14:48:35,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:35,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103210614] [2021-01-26 14:48:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:35,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103210614] [2021-01-26 14:48:35,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081966652] [2021-01-26 14:48:35,891 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 [2021-01-26 14:48:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:35,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:35,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:35,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:36,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:36,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:36,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321653811] [2021-01-26 14:48:36,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:36,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:36,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:36,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:36,016 INFO L87 Difference]: Start difference. First operand 14985 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:37,178 INFO L93 Difference]: Finished difference Result 15305 states and 33800 transitions. [2021-01-26 14:48:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:48:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:37,193 INFO L225 Difference]: With dead ends: 15305 [2021-01-26 14:48:37,193 INFO L226 Difference]: Without dead ends: 15035 [2021-01-26 14:48:37,194 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:48:37,194 INFO L78 Accepts]: Start accepts. Automaton has 15035 states. Word has length 116 [2021-01-26 14:48:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 15035 states. [2021-01-26 14:48:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 15035 states. [2021-01-26 14:48:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:37,207 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:37,207 INFO L504 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] [2021-01-26 14:48:37,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:37,408 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:37,408 INFO L82 PathProgramCache]: Analyzing trace with hash -895638650, now seen corresponding path program 158 times [2021-01-26 14:48:37,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:37,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247634017] [2021-01-26 14:48:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:37,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247634017] [2021-01-26 14:48:37,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390604497] [2021-01-26 14:48:37,834 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 [2021-01-26 14:48:37,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:48:37,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:37,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:37,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:37,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:37,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:37,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:37,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:37,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490415051] [2021-01-26 14:48:37,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:37,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:37,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:37,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:37,995 INFO L87 Difference]: Start difference. First operand 15035 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:39,507 INFO L93 Difference]: Finished difference Result 15355 states and 33900 transitions. [2021-01-26 14:48:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 14:48:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:39,523 INFO L225 Difference]: With dead ends: 15355 [2021-01-26 14:48:39,523 INFO L226 Difference]: Without dead ends: 15085 [2021-01-26 14:48:39,523 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:48:39,523 INFO L78 Accepts]: Start accepts. Automaton has 15085 states. Word has length 116 [2021-01-26 14:48:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:39,524 INFO L481 AbstractCegarLoop]: Abstraction has 15085 states. [2021-01-26 14:48:39,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 15085 states. [2021-01-26 14:48:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:39,536 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:39,536 INFO L504 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] [2021-01-26 14:48:39,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:39,741 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:39,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:39,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1068324428, now seen corresponding path program 159 times [2021-01-26 14:48:39,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:39,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234525462] [2021-01-26 14:48:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:40,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234525462] [2021-01-26 14:48:40,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814955811] [2021-01-26 14:48:40,138 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 [2021-01-26 14:48:40,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-26 14:48:40,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:40,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:40,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:40,255 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:40,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:40,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:40,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861343720] [2021-01-26 14:48:40,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:40,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:40,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:40,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:40,278 INFO L87 Difference]: Start difference. First operand 15085 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:41,688 INFO L93 Difference]: Finished difference Result 15405 states and 34000 transitions. [2021-01-26 14:48:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:48:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:41,704 INFO L225 Difference]: With dead ends: 15405 [2021-01-26 14:48:41,704 INFO L226 Difference]: Without dead ends: 15135 [2021-01-26 14:48:41,704 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:48:41,704 INFO L78 Accepts]: Start accepts. Automaton has 15135 states. Word has length 116 [2021-01-26 14:48:41,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:41,704 INFO L481 AbstractCegarLoop]: Abstraction has 15135 states. [2021-01-26 14:48:41,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:41,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15135 states. [2021-01-26 14:48:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:41,717 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:41,717 INFO L504 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] [2021-01-26 14:48:41,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-01-26 14:48:41,918 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1093347460, now seen corresponding path program 160 times [2021-01-26 14:48:41,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:41,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621959930] [2021-01-26 14:48:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:42,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621959930] [2021-01-26 14:48:42,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308294067] [2021-01-26 14:48:42,339 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 [2021-01-26 14:48:42,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:48:42,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:42,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:48:42,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:42,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:42,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:42,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:42,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:42,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314701196] [2021-01-26 14:48:42,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:42,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:42,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:42,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:42,501 INFO L87 Difference]: Start difference. First operand 15135 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:44,118 INFO L93 Difference]: Finished difference Result 15455 states and 34100 transitions. [2021-01-26 14:48:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-26 14:48:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:44,134 INFO L225 Difference]: With dead ends: 15455 [2021-01-26 14:48:44,134 INFO L226 Difference]: Without dead ends: 15185 [2021-01-26 14:48:44,134 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2021-01-26 14:48:44,135 INFO L78 Accepts]: Start accepts. Automaton has 15185 states. Word has length 116 [2021-01-26 14:48:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:44,135 INFO L481 AbstractCegarLoop]: Abstraction has 15185 states. [2021-01-26 14:48:44,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 15185 states. [2021-01-26 14:48:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:44,148 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:44,148 INFO L504 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] [2021-01-26 14:48:44,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-01-26 14:48:44,349 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:44,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:44,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1311018958, now seen corresponding path program 161 times [2021-01-26 14:48:44,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:44,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360651756] [2021-01-26 14:48:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:44,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360651756] [2021-01-26 14:48:44,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473990804] [2021-01-26 14:48:44,740 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 [2021-01-26 14:48:44,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:48:44,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:44,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:44,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:44,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:44,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:44,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:44,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595851901] [2021-01-26 14:48:44,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:44,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:44,873 INFO L87 Difference]: Start difference. First operand 15185 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:46,210 INFO L93 Difference]: Finished difference Result 15505 states and 34200 transitions. [2021-01-26 14:48:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-26 14:48:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:46,226 INFO L225 Difference]: With dead ends: 15505 [2021-01-26 14:48:46,226 INFO L226 Difference]: Without dead ends: 15235 [2021-01-26 14:48:46,227 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:48:46,227 INFO L78 Accepts]: Start accepts. Automaton has 15235 states. Word has length 116 [2021-01-26 14:48:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:46,227 INFO L481 AbstractCegarLoop]: Abstraction has 15235 states. [2021-01-26 14:48:46,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 15235 states. [2021-01-26 14:48:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:46,240 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:46,240 INFO L504 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] [2021-01-26 14:48:46,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-01-26 14:48:46,441 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash -89312510, now seen corresponding path program 162 times [2021-01-26 14:48:46,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:46,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825173267] [2021-01-26 14:48:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:46,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825173267] [2021-01-26 14:48:46,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140685981] [2021-01-26 14:48:46,847 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 [2021-01-26 14:48:46,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:48:46,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:46,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:46,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:46,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:46,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:47,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:47,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:47,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253397775] [2021-01-26 14:48:47,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:47,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:47,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:47,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:47,012 INFO L87 Difference]: Start difference. First operand 15235 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:47,436 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-01-26 14:48:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:48,926 INFO L93 Difference]: Finished difference Result 15555 states and 34300 transitions. [2021-01-26 14:48:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-26 14:48:48,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:48,942 INFO L225 Difference]: With dead ends: 15555 [2021-01-26 14:48:48,942 INFO L226 Difference]: Without dead ends: 15285 [2021-01-26 14:48:48,942 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2021-01-26 14:48:48,942 INFO L78 Accepts]: Start accepts. Automaton has 15285 states. Word has length 116 [2021-01-26 14:48:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:48,942 INFO L481 AbstractCegarLoop]: Abstraction has 15285 states. [2021-01-26 14:48:48,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15285 states. [2021-01-26 14:48:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:48,955 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:48,956 INFO L504 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] [2021-01-26 14:48:49,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:49,156 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:49,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:49,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1179345872, now seen corresponding path program 163 times [2021-01-26 14:48:49,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:49,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786077092] [2021-01-26 14:48:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:49,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786077092] [2021-01-26 14:48:49,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869340512] [2021-01-26 14:48:49,544 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 [2021-01-26 14:48:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:49,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:49,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:49,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:49,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:49,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:49,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152979287] [2021-01-26 14:48:49,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:49,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:49,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:49,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:49,670 INFO L87 Difference]: Start difference. First operand 15285 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:51,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:51,109 INFO L93 Difference]: Finished difference Result 15605 states and 34400 transitions. [2021-01-26 14:48:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-26 14:48:51,110 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:51,125 INFO L225 Difference]: With dead ends: 15605 [2021-01-26 14:48:51,125 INFO L226 Difference]: Without dead ends: 15335 [2021-01-26 14:48:51,126 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2021-01-26 14:48:51,126 INFO L78 Accepts]: Start accepts. Automaton has 15335 states. Word has length 116 [2021-01-26 14:48:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:51,126 INFO L481 AbstractCegarLoop]: Abstraction has 15335 states. [2021-01-26 14:48:51,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states. [2021-01-26 14:48:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:51,139 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:51,140 INFO L504 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] [2021-01-26 14:48:51,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-01-26 14:48:51,340 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:51,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:51,341 INFO L82 PathProgramCache]: Analyzing trace with hash -259742976, now seen corresponding path program 164 times [2021-01-26 14:48:51,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:51,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700209331] [2021-01-26 14:48:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:51,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700209331] [2021-01-26 14:48:51,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237241681] [2021-01-26 14:48:51,739 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 [2021-01-26 14:48:51,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:48:51,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:51,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:51,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:51,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:51,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:51,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:51,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214448921] [2021-01-26 14:48:51,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:51,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:51,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:51,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:51,904 INFO L87 Difference]: Start difference. First operand 15335 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:53,910 INFO L93 Difference]: Finished difference Result 16039 states and 35524 transitions. [2021-01-26 14:48:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-26 14:48:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:53,926 INFO L225 Difference]: With dead ends: 16039 [2021-01-26 14:48:53,926 INFO L226 Difference]: Without dead ends: 15455 [2021-01-26 14:48:53,926 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1037, Invalid=2995, Unknown=0, NotChecked=0, Total=4032 [2021-01-26 14:48:53,927 INFO L78 Accepts]: Start accepts. Automaton has 15455 states. Word has length 116 [2021-01-26 14:48:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:53,927 INFO L481 AbstractCegarLoop]: Abstraction has 15455 states. [2021-01-26 14:48:53,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 15455 states. [2021-01-26 14:48:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:53,940 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:53,940 INFO L504 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] [2021-01-26 14:48:54,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:54,141 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:54,141 INFO L82 PathProgramCache]: Analyzing trace with hash 92332942, now seen corresponding path program 165 times [2021-01-26 14:48:54,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:54,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683608349] [2021-01-26 14:48:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:54,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683608349] [2021-01-26 14:48:54,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929007154] [2021-01-26 14:48:54,695 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 [2021-01-26 14:48:54,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-26 14:48:54,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:54,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-26 14:48:54,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:54,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:54,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:54,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-01-26 14:48:54,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515758398] [2021-01-26 14:48:54,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:48:54,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:54,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:48:54,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:48:54,829 INFO L87 Difference]: Start difference. First operand 15455 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:56,385 INFO L93 Difference]: Finished difference Result 16927 states and 38054 transitions. [2021-01-26 14:48:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-26 14:48:56,386 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2021-01-26 14:48:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:56,402 INFO L225 Difference]: With dead ends: 16927 [2021-01-26 14:48:56,402 INFO L226 Difference]: Without dead ends: 16642 [2021-01-26 14:48:56,403 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2021-01-26 14:48:56,403 INFO L78 Accepts]: Start accepts. Automaton has 16642 states. Word has length 116 [2021-01-26 14:48:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:56,403 INFO L481 AbstractCegarLoop]: Abstraction has 16642 states. [2021-01-26 14:48:56,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:48:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 16642 states. [2021-01-26 14:48:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-26 14:48:56,422 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:56,422 INFO L504 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] [2021-01-26 14:48:56,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:56,635 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash 89359712, now seen corresponding path program 166 times [2021-01-26 14:48:56,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:56,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373349025] [2021-01-26 14:48:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:48:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373349025] [2021-01-26 14:48:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354793601] [2021-01-26 14:48:57,035 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 [2021-01-26 14:48:57,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:48:57,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:48:57,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:48:57,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:48:57,181 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:48:57,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:48:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:48:57,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:48:57,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-26 14:48:57,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453414241] [2021-01-26 14:48:57,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-26 14:48:57,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:48:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-26 14:48:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:48:57,225 INFO L87 Difference]: Start difference. First operand 16642 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:48:59,235 INFO L93 Difference]: Finished difference Result 16194 states and 35851 transitions. [2021-01-26 14:48:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-26 14:48:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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 116 [2021-01-26 14:48:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:48:59,251 INFO L225 Difference]: With dead ends: 16194 [2021-01-26 14:48:59,252 INFO L226 Difference]: Without dead ends: 15565 [2021-01-26 14:48:59,252 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2021-01-26 14:48:59,252 INFO L78 Accepts]: Start accepts. Automaton has 15565 states. Word has length 116 [2021-01-26 14:48:59,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:48:59,252 INFO L481 AbstractCegarLoop]: Abstraction has 15565 states. [2021-01-26 14:48:59,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 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) [2021-01-26 14:48:59,253 INFO L276 IsEmpty]: Start isEmpty. Operand 15565 states. [2021-01-26 14:48:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:48:59,266 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:48:59,266 INFO L504 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] [2021-01-26 14:48:59,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:48:59,467 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:48:59,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:48:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash -747814239, now seen corresponding path program 167 times [2021-01-26 14:48:59,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:48:59,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306977672] [2021-01-26 14:48:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:48:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:00,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306977672] [2021-01-26 14:49:00,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707604974] [2021-01-26 14:49:00,009 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 [2021-01-26 14:49:00,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:49:00,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:00,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:00,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:00,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:00,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:00,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:00,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482733739] [2021-01-26 14:49:00,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:00,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:00,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:00,169 INFO L87 Difference]: Start difference. First operand 15565 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:01,012 INFO L93 Difference]: Finished difference Result 15885 states and 35050 transitions. [2021-01-26 14:49:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:49:01,013 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:01,029 INFO L225 Difference]: With dead ends: 15885 [2021-01-26 14:49:01,029 INFO L226 Difference]: Without dead ends: 15615 [2021-01-26 14:49:01,029 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=599, Invalid=1471, Unknown=0, NotChecked=0, Total=2070 [2021-01-26 14:49:01,029 INFO L78 Accepts]: Start accepts. Automaton has 15615 states. Word has length 121 [2021-01-26 14:49:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:01,030 INFO L481 AbstractCegarLoop]: Abstraction has 15615 states. [2021-01-26 14:49:01,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15615 states. [2021-01-26 14:49:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:01,215 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:01,215 INFO L504 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] [2021-01-26 14:49:01,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2021-01-26 14:49:01,416 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:01,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1449478899, now seen corresponding path program 168 times [2021-01-26 14:49:01,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:01,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21524284] [2021-01-26 14:49:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:01,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21524284] [2021-01-26 14:49:01,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547402687] [2021-01-26 14:49:01,982 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 [2021-01-26 14:49:02,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:49:02,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:02,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:02,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:02,111 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:02,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:02,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:02,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:02,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415023782] [2021-01-26 14:49:02,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:02,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:02,212 INFO L87 Difference]: Start difference. First operand 15615 states. 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) [2021-01-26 14:49:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:03,158 INFO L93 Difference]: Finished difference Result 15935 states and 35150 transitions. [2021-01-26 14:49:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-26 14:49:03,159 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 [2021-01-26 14:49:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:03,174 INFO L225 Difference]: With dead ends: 15935 [2021-01-26 14:49:03,174 INFO L226 Difference]: Without dead ends: 15665 [2021-01-26 14:49:03,174 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:49:03,174 INFO L78 Accepts]: Start accepts. Automaton has 15665 states. Word has length 121 [2021-01-26 14:49:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:03,175 INFO L481 AbstractCegarLoop]: Abstraction has 15665 states. [2021-01-26 14:49:03,175 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) [2021-01-26 14:49:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 15665 states. [2021-01-26 14:49:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:03,188 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:03,188 INFO L504 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] [2021-01-26 14:49:03,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:03,389 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:03,390 INFO L82 PathProgramCache]: Analyzing trace with hash -718710131, now seen corresponding path program 169 times [2021-01-26 14:49:03,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:03,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059110359] [2021-01-26 14:49:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:03,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059110359] [2021-01-26 14:49:03,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836842752] [2021-01-26 14:49:03,915 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 [2021-01-26 14:49:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:04,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:04,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:04,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:04,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:04,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:04,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611024851] [2021-01-26 14:49:04,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:04,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:04,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:04,091 INFO L87 Difference]: Start difference. First operand 15665 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:05,061 INFO L93 Difference]: Finished difference Result 15985 states and 35250 transitions. [2021-01-26 14:49:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-26 14:49:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:05,078 INFO L225 Difference]: With dead ends: 15985 [2021-01-26 14:49:05,078 INFO L226 Difference]: Without dead ends: 15715 [2021-01-26 14:49:05,078 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-01-26 14:49:05,078 INFO L78 Accepts]: Start accepts. Automaton has 15715 states. Word has length 121 [2021-01-26 14:49:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:05,078 INFO L481 AbstractCegarLoop]: Abstraction has 15715 states. [2021-01-26 14:49:05,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15715 states. [2021-01-26 14:49:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:05,092 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:05,092 INFO L504 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] [2021-01-26 14:49:05,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2021-01-26 14:49:05,293 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:05,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:05,294 INFO L82 PathProgramCache]: Analyzing trace with hash -911309475, now seen corresponding path program 170 times [2021-01-26 14:49:05,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:05,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033920073] [2021-01-26 14:49:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:05,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033920073] [2021-01-26 14:49:05,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739829688] [2021-01-26 14:49:05,850 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 [2021-01-26 14:49:05,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:49:05,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:05,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:05,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:05,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:06,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:06,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:06,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:06,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562831514] [2021-01-26 14:49:06,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:06,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:06,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:06,051 INFO L87 Difference]: Start difference. First operand 15715 states. 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) [2021-01-26 14:49:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:07,156 INFO L93 Difference]: Finished difference Result 16085 states and 35450 transitions. [2021-01-26 14:49:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:49:07,157 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 [2021-01-26 14:49:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:07,172 INFO L225 Difference]: With dead ends: 16085 [2021-01-26 14:49:07,173 INFO L226 Difference]: Without dead ends: 15815 [2021-01-26 14:49:07,173 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:49:07,173 INFO L78 Accepts]: Start accepts. Automaton has 15815 states. Word has length 121 [2021-01-26 14:49:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:07,173 INFO L481 AbstractCegarLoop]: Abstraction has 15815 states. [2021-01-26 14:49:07,173 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) [2021-01-26 14:49:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 15815 states. [2021-01-26 14:49:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:07,188 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:07,188 INFO L504 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] [2021-01-26 14:49:07,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-01-26 14:49:07,389 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:07,390 INFO L82 PathProgramCache]: Analyzing trace with hash 741164427, now seen corresponding path program 171 times [2021-01-26 14:49:07,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:07,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385084054] [2021-01-26 14:49:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385084054] [2021-01-26 14:49:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384991776] [2021-01-26 14:49:08,075 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 [2021-01-26 14:49:08,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-26 14:49:08,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:08,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:08,223 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:08,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:08,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:08,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119077529] [2021-01-26 14:49:08,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:08,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:08,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:08,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:08,245 INFO L87 Difference]: Start difference. First operand 15815 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:09,308 INFO L93 Difference]: Finished difference Result 16135 states and 35550 transitions. [2021-01-26 14:49:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:49:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:09,325 INFO L225 Difference]: With dead ends: 16135 [2021-01-26 14:49:09,325 INFO L226 Difference]: Without dead ends: 15865 [2021-01-26 14:49:09,325 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:49:09,325 INFO L78 Accepts]: Start accepts. Automaton has 15865 states. Word has length 121 [2021-01-26 14:49:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:09,326 INFO L481 AbstractCegarLoop]: Abstraction has 15865 states. [2021-01-26 14:49:09,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 15865 states. [2021-01-26 14:49:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:09,339 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:09,339 INFO L504 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] [2021-01-26 14:49:09,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-01-26 14:49:09,540 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:09,541 INFO L82 PathProgramCache]: Analyzing trace with hash 206746715, now seen corresponding path program 172 times [2021-01-26 14:49:09,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:09,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804088228] [2021-01-26 14:49:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:10,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804088228] [2021-01-26 14:49:10,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551425457] [2021-01-26 14:49:10,071 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 [2021-01-26 14:49:10,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:49:10,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:10,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-26 14:49:10,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:10,193 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:10,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:10,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:10,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:10,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593874891] [2021-01-26 14:49:10,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:10,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:10,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:10,279 INFO L87 Difference]: Start difference. First operand 15865 states. 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) [2021-01-26 14:49:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:11,553 INFO L93 Difference]: Finished difference Result 16185 states and 35650 transitions. [2021-01-26 14:49:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:49:11,553 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 [2021-01-26 14:49:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:11,569 INFO L225 Difference]: With dead ends: 16185 [2021-01-26 14:49:11,569 INFO L226 Difference]: Without dead ends: 15915 [2021-01-26 14:49:11,570 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:49:11,570 INFO L78 Accepts]: Start accepts. Automaton has 15915 states. Word has length 121 [2021-01-26 14:49:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:11,570 INFO L481 AbstractCegarLoop]: Abstraction has 15915 states. [2021-01-26 14:49:11,570 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) [2021-01-26 14:49:11,570 INFO L276 IsEmpty]: Start isEmpty. Operand 15915 states. [2021-01-26 14:49:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:11,584 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:11,584 INFO L504 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] [2021-01-26 14:49:11,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2021-01-26 14:49:11,785 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:11,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:11,785 INFO L82 PathProgramCache]: Analyzing trace with hash 231552521, now seen corresponding path program 173 times [2021-01-26 14:49:11,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:11,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944580786] [2021-01-26 14:49:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:12,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944580786] [2021-01-26 14:49:12,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199707786] [2021-01-26 14:49:12,268 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 [2021-01-26 14:49:12,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:49:12,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:12,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:12,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:12,411 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:12,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:12,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:12,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706188738] [2021-01-26 14:49:12,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:12,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:12,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:12,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:12,432 INFO L87 Difference]: Start difference. First operand 15915 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:13,541 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-26 14:49:13,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:13,796 INFO L93 Difference]: Finished difference Result 16235 states and 35750 transitions. [2021-01-26 14:49:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:49:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:13,815 INFO L225 Difference]: With dead ends: 16235 [2021-01-26 14:49:13,815 INFO L226 Difference]: Without dead ends: 15965 [2021-01-26 14:49:13,816 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:49:13,816 INFO L78 Accepts]: Start accepts. Automaton has 15965 states. Word has length 121 [2021-01-26 14:49:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:13,816 INFO L481 AbstractCegarLoop]: Abstraction has 15965 states. [2021-01-26 14:49:13,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15965 states. [2021-01-26 14:49:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:13,836 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:13,836 INFO L504 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] [2021-01-26 14:49:14,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:14,049 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash 341305561, now seen corresponding path program 174 times [2021-01-26 14:49:14,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671936341] [2021-01-26 14:49:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:14,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671936341] [2021-01-26 14:49:14,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450876524] [2021-01-26 14:49:14,548 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 [2021-01-26 14:49:14,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:49:14,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:14,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:14,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:14,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:14,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:14,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:14,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:14,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267943664] [2021-01-26 14:49:14,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:14,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:14,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:14,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:14,771 INFO L87 Difference]: Start difference. First operand 15965 states. 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) [2021-01-26 14:49:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:16,065 INFO L93 Difference]: Finished difference Result 16285 states and 35850 transitions. [2021-01-26 14:49:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:49:16,066 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 [2021-01-26 14:49:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:16,085 INFO L225 Difference]: With dead ends: 16285 [2021-01-26 14:49:16,086 INFO L226 Difference]: Without dead ends: 16015 [2021-01-26 14:49:16,086 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:49:16,086 INFO L78 Accepts]: Start accepts. Automaton has 16015 states. Word has length 121 [2021-01-26 14:49:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:16,087 INFO L481 AbstractCegarLoop]: Abstraction has 16015 states. [2021-01-26 14:49:16,087 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) [2021-01-26 14:49:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 16015 states. [2021-01-26 14:49:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:16,108 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:16,108 INFO L504 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] [2021-01-26 14:49:16,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2021-01-26 14:49:16,322 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:16,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:16,323 INFO L82 PathProgramCache]: Analyzing trace with hash -154530809, now seen corresponding path program 175 times [2021-01-26 14:49:16,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:16,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381364815] [2021-01-26 14:49:16,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:16,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381364815] [2021-01-26 14:49:16,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714117630] [2021-01-26 14:49:16,796 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 [2021-01-26 14:49:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:16,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:16,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:16,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:16,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:16,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:16,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960898162] [2021-01-26 14:49:16,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:16,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:16,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:16,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:16,982 INFO L87 Difference]: Start difference. First operand 16015 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:17,779 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-26 14:49:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:18,194 INFO L93 Difference]: Finished difference Result 16335 states and 35950 transitions. [2021-01-26 14:49:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:49:18,195 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:18,212 INFO L225 Difference]: With dead ends: 16335 [2021-01-26 14:49:18,212 INFO L226 Difference]: Without dead ends: 16065 [2021-01-26 14:49:18,213 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:49:18,213 INFO L78 Accepts]: Start accepts. Automaton has 16065 states. Word has length 121 [2021-01-26 14:49:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:18,213 INFO L481 AbstractCegarLoop]: Abstraction has 16065 states. [2021-01-26 14:49:18,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 16065 states. [2021-01-26 14:49:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:18,232 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:18,232 INFO L504 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] [2021-01-26 14:49:18,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:18,446 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:18,447 INFO L82 PathProgramCache]: Analyzing trace with hash 549389015, now seen corresponding path program 176 times [2021-01-26 14:49:18,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:18,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158331361] [2021-01-26 14:49:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:19,064 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2021-01-26 14:49:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:19,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158331361] [2021-01-26 14:49:19,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874259615] [2021-01-26 14:49:19,112 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 [2021-01-26 14:49:19,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:49:19,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:19,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:19,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:19,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:19,289 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:19,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:19,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:19,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134938702] [2021-01-26 14:49:19,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:19,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:19,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:19,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:19,317 INFO L87 Difference]: Start difference. First operand 16065 states. 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) [2021-01-26 14:49:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:20,697 INFO L93 Difference]: Finished difference Result 16385 states and 36050 transitions. [2021-01-26 14:49:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 14:49:20,697 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 [2021-01-26 14:49:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:20,713 INFO L225 Difference]: With dead ends: 16385 [2021-01-26 14:49:20,713 INFO L226 Difference]: Without dead ends: 16115 [2021-01-26 14:49:20,713 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2021-01-26 14:49:20,714 INFO L78 Accepts]: Start accepts. Automaton has 16115 states. Word has length 121 [2021-01-26 14:49:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:20,714 INFO L481 AbstractCegarLoop]: Abstraction has 16115 states. [2021-01-26 14:49:20,714 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) [2021-01-26 14:49:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 16115 states. [2021-01-26 14:49:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:20,727 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:20,728 INFO L504 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] [2021-01-26 14:49:20,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:20,928 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1434232709, now seen corresponding path program 177 times [2021-01-26 14:49:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:20,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455234418] [2021-01-26 14:49:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:21,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455234418] [2021-01-26 14:49:21,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846147417] [2021-01-26 14:49:21,380 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 [2021-01-26 14:49:21,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-26 14:49:21,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:21,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:21,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:21,535 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:21,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:21,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:21,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155413758] [2021-01-26 14:49:21,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:21,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:21,554 INFO L87 Difference]: Start difference. First operand 16115 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:22,880 INFO L93 Difference]: Finished difference Result 16435 states and 36150 transitions. [2021-01-26 14:49:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-26 14:49:22,882 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:22,897 INFO L225 Difference]: With dead ends: 16435 [2021-01-26 14:49:22,898 INFO L226 Difference]: Without dead ends: 16165 [2021-01-26 14:49:22,898 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2021-01-26 14:49:22,898 INFO L78 Accepts]: Start accepts. Automaton has 16165 states. Word has length 121 [2021-01-26 14:49:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:22,898 INFO L481 AbstractCegarLoop]: Abstraction has 16165 states. [2021-01-26 14:49:22,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 16165 states. [2021-01-26 14:49:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:22,912 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:22,912 INFO L504 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] [2021-01-26 14:49:23,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:23,113 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:23,114 INFO L82 PathProgramCache]: Analyzing trace with hash 841015893, now seen corresponding path program 178 times [2021-01-26 14:49:23,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:23,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713147808] [2021-01-26 14:49:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:23,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713147808] [2021-01-26 14:49:23,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180297631] [2021-01-26 14:49:23,586 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 [2021-01-26 14:49:23,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:49:23,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:23,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-26 14:49:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:23,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:23,757 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:23,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:23,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:23,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589882774] [2021-01-26 14:49:23,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:23,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:23,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:23,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:23,778 INFO L87 Difference]: Start difference. First operand 16165 states. 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) [2021-01-26 14:49:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:25,589 INFO L93 Difference]: Finished difference Result 16485 states and 36250 transitions. [2021-01-26 14:49:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-26 14:49:25,590 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 [2021-01-26 14:49:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:25,605 INFO L225 Difference]: With dead ends: 16485 [2021-01-26 14:49:25,605 INFO L226 Difference]: Without dead ends: 16215 [2021-01-26 14:49:25,606 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2021-01-26 14:49:25,606 INFO L78 Accepts]: Start accepts. Automaton has 16215 states. Word has length 121 [2021-01-26 14:49:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:25,606 INFO L481 AbstractCegarLoop]: Abstraction has 16215 states. [2021-01-26 14:49:25,606 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) [2021-01-26 14:49:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16215 states. [2021-01-26 14:49:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:25,620 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:25,620 INFO L504 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] [2021-01-26 14:49:25,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:25,821 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash 668330115, now seen corresponding path program 179 times [2021-01-26 14:49:25,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:25,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775666297] [2021-01-26 14:49:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:26,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775666297] [2021-01-26 14:49:26,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943412757] [2021-01-26 14:49:26,269 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 [2021-01-26 14:49:26,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:49:26,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:26,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:26,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:26,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:26,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:26,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:26,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8654476] [2021-01-26 14:49:26,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:26,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:26,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:26,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:26,435 INFO L87 Difference]: Start difference. First operand 16215 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:27,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:27,893 INFO L93 Difference]: Finished difference Result 16535 states and 36350 transitions. [2021-01-26 14:49:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-26 14:49:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:27,909 INFO L225 Difference]: With dead ends: 16535 [2021-01-26 14:49:27,909 INFO L226 Difference]: Without dead ends: 16265 [2021-01-26 14:49:27,910 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-01-26 14:49:27,910 INFO L78 Accepts]: Start accepts. Automaton has 16265 states. Word has length 121 [2021-01-26 14:49:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:27,910 INFO L481 AbstractCegarLoop]: Abstraction has 16265 states. [2021-01-26 14:49:27,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand 16265 states. [2021-01-26 14:49:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:27,924 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:27,924 INFO L504 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] [2021-01-26 14:49:28,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2021-01-26 14:49:28,125 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:28,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1464965293, now seen corresponding path program 180 times [2021-01-26 14:49:28,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:28,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707579962] [2021-01-26 14:49:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:28,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707579962] [2021-01-26 14:49:28,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940834124] [2021-01-26 14:49:28,591 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 [2021-01-26 14:49:28,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:49:28,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:28,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:28,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:28,778 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:28,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:28,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:28,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672015650] [2021-01-26 14:49:28,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:28,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:28,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:28,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:28,804 INFO L87 Difference]: Start difference. First operand 16265 states. 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) [2021-01-26 14:49:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:30,633 INFO L93 Difference]: Finished difference Result 16585 states and 36450 transitions. [2021-01-26 14:49:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-26 14:49:30,634 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 [2021-01-26 14:49:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:30,650 INFO L225 Difference]: With dead ends: 16585 [2021-01-26 14:49:30,650 INFO L226 Difference]: Without dead ends: 16315 [2021-01-26 14:49:30,651 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2021-01-26 14:49:30,651 INFO L78 Accepts]: Start accepts. Automaton has 16315 states. Word has length 121 [2021-01-26 14:49:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:30,651 INFO L481 AbstractCegarLoop]: Abstraction has 16315 states. [2021-01-26 14:49:30,652 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) [2021-01-26 14:49:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 16315 states. [2021-01-26 14:49:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:30,667 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:30,667 INFO L504 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] [2021-01-26 14:49:30,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-01-26 14:49:30,868 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:30,869 INFO L82 PathProgramCache]: Analyzing trace with hash 425635585, now seen corresponding path program 181 times [2021-01-26 14:49:30,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:30,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685481666] [2021-01-26 14:49:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:31,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685481666] [2021-01-26 14:49:31,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343660394] [2021-01-26 14:49:31,464 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 [2021-01-26 14:49:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:31,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:31,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:31,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:31,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:31,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:31,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729727881] [2021-01-26 14:49:31,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:31,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:31,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:31,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:31,637 INFO L87 Difference]: Start difference. First operand 16315 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:33,148 INFO L93 Difference]: Finished difference Result 16635 states and 36550 transitions. [2021-01-26 14:49:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-26 14:49:33,149 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:33,170 INFO L225 Difference]: With dead ends: 16635 [2021-01-26 14:49:33,170 INFO L226 Difference]: Without dead ends: 16365 [2021-01-26 14:49:33,170 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2021-01-26 14:49:33,171 INFO L78 Accepts]: Start accepts. Automaton has 16365 states. Word has length 121 [2021-01-26 14:49:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:33,171 INFO L481 AbstractCegarLoop]: Abstraction has 16365 states. [2021-01-26 14:49:33,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 16365 states. [2021-01-26 14:49:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:33,192 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:33,192 INFO L504 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] [2021-01-26 14:49:33,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-01-26 14:49:33,406 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:33,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1647342033, now seen corresponding path program 182 times [2021-01-26 14:49:33,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:33,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296191592] [2021-01-26 14:49:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:33,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296191592] [2021-01-26 14:49:33,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204076754] [2021-01-26 14:49:33,961 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 [2021-01-26 14:49:34,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:49:34,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:34,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:34,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:34,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:34,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:34,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:34,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:34,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897283303] [2021-01-26 14:49:34,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:34,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:34,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:34,169 INFO L87 Difference]: Start difference. First operand 16365 states. 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) [2021-01-26 14:49:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:35,954 INFO L93 Difference]: Finished difference Result 16685 states and 36650 transitions. [2021-01-26 14:49:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-26 14:49:35,955 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 [2021-01-26 14:49:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:35,973 INFO L225 Difference]: With dead ends: 16685 [2021-01-26 14:49:35,973 INFO L226 Difference]: Without dead ends: 16415 [2021-01-26 14:49:35,974 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2021-01-26 14:49:35,975 INFO L78 Accepts]: Start accepts. Automaton has 16415 states. Word has length 121 [2021-01-26 14:49:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:35,975 INFO L481 AbstractCegarLoop]: Abstraction has 16415 states. [2021-01-26 14:49:35,975 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) [2021-01-26 14:49:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 16415 states. [2021-01-26 14:49:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:35,993 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:35,994 INFO L504 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] [2021-01-26 14:49:36,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:36,209 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:36,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:36,210 INFO L82 PathProgramCache]: Analyzing trace with hash 557308671, now seen corresponding path program 183 times [2021-01-26 14:49:36,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:36,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034420280] [2021-01-26 14:49:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:36,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034420280] [2021-01-26 14:49:36,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607771713] [2021-01-26 14:49:36,629 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 [2021-01-26 14:49:36,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-26 14:49:36,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:36,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:36,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:36,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:36,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:36,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:36,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403272192] [2021-01-26 14:49:36,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:36,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:36,809 INFO L87 Difference]: Start difference. First operand 16415 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:37,210 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-26 14:49:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:38,676 INFO L93 Difference]: Finished difference Result 16735 states and 36750 transitions. [2021-01-26 14:49:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-26 14:49:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:38,692 INFO L225 Difference]: With dead ends: 16735 [2021-01-26 14:49:38,693 INFO L226 Difference]: Without dead ends: 16465 [2021-01-26 14:49:38,693 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2021-01-26 14:49:38,693 INFO L78 Accepts]: Start accepts. Automaton has 16465 states. Word has length 121 [2021-01-26 14:49:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:38,693 INFO L481 AbstractCegarLoop]: Abstraction has 16465 states. [2021-01-26 14:49:38,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16465 states. [2021-01-26 14:49:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:38,709 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:38,709 INFO L504 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] [2021-01-26 14:49:38,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:38,912 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:38,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:38,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1476911567, now seen corresponding path program 184 times [2021-01-26 14:49:38,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:38,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89541352] [2021-01-26 14:49:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89541352] [2021-01-26 14:49:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349770264] [2021-01-26 14:49:39,356 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 [2021-01-26 14:49:39,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:49:39,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:39,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-26 14:49:39,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:39,479 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:39,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:39,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:39,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:39,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284744939] [2021-01-26 14:49:39,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:39,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:39,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:39,553 INFO L87 Difference]: Start difference. First operand 16465 states. 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) [2021-01-26 14:49:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:41,613 INFO L93 Difference]: Finished difference Result 16945 states and 37250 transitions. [2021-01-26 14:49:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-26 14:49:41,614 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 [2021-01-26 14:49:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:41,630 INFO L225 Difference]: With dead ends: 16945 [2021-01-26 14:49:41,630 INFO L226 Difference]: Without dead ends: 16645 [2021-01-26 14:49:41,630 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2021-01-26 14:49:41,630 INFO L78 Accepts]: Start accepts. Automaton has 16645 states. Word has length 121 [2021-01-26 14:49:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:41,631 INFO L481 AbstractCegarLoop]: Abstraction has 16645 states. [2021-01-26 14:49:41,631 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) [2021-01-26 14:49:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16645 states. [2021-01-26 14:49:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:41,644 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:41,644 INFO L504 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] [2021-01-26 14:49:41,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:41,845 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:41,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1828987485, now seen corresponding path program 185 times [2021-01-26 14:49:41,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:41,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049903943] [2021-01-26 14:49:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:42,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049903943] [2021-01-26 14:49:42,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236292164] [2021-01-26 14:49:42,285 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 [2021-01-26 14:49:42,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-26 14:49:42,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:42,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:42,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:42,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:42,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:42,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-26 14:49:42,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121909126] [2021-01-26 14:49:42,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:42,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:42,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:42,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:42,451 INFO L87 Difference]: Start difference. First operand 16645 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:44,321 INFO L93 Difference]: Finished difference Result 18117 states and 40554 transitions. [2021-01-26 14:49:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-26 14:49:44,321 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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 121 [2021-01-26 14:49:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:44,337 INFO L225 Difference]: With dead ends: 18117 [2021-01-26 14:49:44,338 INFO L226 Difference]: Without dead ends: 17832 [2021-01-26 14:49:44,338 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2021-01-26 14:49:44,338 INFO L78 Accepts]: Start accepts. Automaton has 17832 states. Word has length 121 [2021-01-26 14:49:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:44,338 INFO L481 AbstractCegarLoop]: Abstraction has 17832 states. [2021-01-26 14:49:44,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 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) [2021-01-26 14:49:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 17832 states. [2021-01-26 14:49:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-26 14:49:44,351 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:44,351 INFO L504 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] [2021-01-26 14:49:44,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:44,552 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:44,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1826014255, now seen corresponding path program 186 times [2021-01-26 14:49:44,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:44,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786569777] [2021-01-26 14:49:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:45,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786569777] [2021-01-26 14:49:45,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356562892] [2021-01-26 14:49:45,019 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 [2021-01-26 14:49:45,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-26 14:49:45,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-26 14:49:45,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:45,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:45,197 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:45,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:45,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-01-26 14:49:45,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575341443] [2021-01-26 14:49:45,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:45,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:45,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:45,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:45,213 INFO L87 Difference]: Start difference. First operand 17832 states. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:47,505 INFO L93 Difference]: Finished difference Result 17640 states and 38991 transitions. [2021-01-26 14:49:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-26 14:49:47,506 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 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 [2021-01-26 14:49:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:47,522 INFO L225 Difference]: With dead ends: 17640 [2021-01-26 14:49:47,522 INFO L226 Difference]: Without dead ends: 16955 [2021-01-26 14:49:47,522 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1326, Invalid=3644, Unknown=0, NotChecked=0, Total=4970 [2021-01-26 14:49:47,522 INFO L78 Accepts]: Start accepts. Automaton has 16955 states. Word has length 121 [2021-01-26 14:49:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:47,523 INFO L481 AbstractCegarLoop]: Abstraction has 16955 states. [2021-01-26 14:49:47,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16955 states. [2021-01-26 14:49:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:49:47,538 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:47,538 INFO L504 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] [2021-01-26 14:49:47,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2021-01-26 14:49:47,739 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:47,739 INFO L82 PathProgramCache]: Analyzing trace with hash -367058495, now seen corresponding path program 187 times [2021-01-26 14:49:47,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:47,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691089123] [2021-01-26 14:49:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:48,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691089123] [2021-01-26 14:49:48,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831108198] [2021-01-26 14:49:48,342 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 [2021-01-26 14:49:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:49:48,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:48,451 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:48,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:48,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:49:48,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845212591] [2021-01-26 14:49:48,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:48,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:48,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:48,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:48,492 INFO L87 Difference]: Start difference. First operand 16955 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:49,472 INFO L93 Difference]: Finished difference Result 17275 states and 38010 transitions. [2021-01-26 14:49:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:49:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:49:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:49,498 INFO L225 Difference]: With dead ends: 17275 [2021-01-26 14:49:49,499 INFO L226 Difference]: Without dead ends: 17005 [2021-01-26 14:49:49,499 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2021-01-26 14:49:49,499 INFO L78 Accepts]: Start accepts. Automaton has 17005 states. Word has length 126 [2021-01-26 14:49:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:49,499 INFO L481 AbstractCegarLoop]: Abstraction has 17005 states. [2021-01-26 14:49:49,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 17005 states. [2021-01-26 14:49:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:49:49,514 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:49,514 INFO L504 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] [2021-01-26 14:49:49,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:49,714 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1830234643, now seen corresponding path program 188 times [2021-01-26 14:49:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:49,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584159617] [2021-01-26 14:49:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:50,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584159617] [2021-01-26 14:49:50,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389656637] [2021-01-26 14:49:50,336 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 [2021-01-26 14:49:50,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:49:50,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:50,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:49:50,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:50,628 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:50,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:50,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:50,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:49:50,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854513883] [2021-01-26 14:49:50,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:50,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:50,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:50,693 INFO L87 Difference]: Start difference. First operand 17005 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:51,776 INFO L93 Difference]: Finished difference Result 17325 states and 38110 transitions. [2021-01-26 14:49:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:49:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:49:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:51,799 INFO L225 Difference]: With dead ends: 17325 [2021-01-26 14:49:51,799 INFO L226 Difference]: Without dead ends: 17055 [2021-01-26 14:49:51,799 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:49:51,799 INFO L78 Accepts]: Start accepts. Automaton has 17055 states. Word has length 126 [2021-01-26 14:49:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:51,800 INFO L481 AbstractCegarLoop]: Abstraction has 17055 states. [2021-01-26 14:49:51,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 17055 states. [2021-01-26 14:49:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:49:51,822 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:51,822 INFO L504 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] [2021-01-26 14:49:52,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:52,026 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:52,027 INFO L82 PathProgramCache]: Analyzing trace with hash -337954387, now seen corresponding path program 189 times [2021-01-26 14:49:52,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:52,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758466000] [2021-01-26 14:49:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:52,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758466000] [2021-01-26 14:49:52,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54280850] [2021-01-26 14:49:52,592 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 [2021-01-26 14:49:52,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-26 14:49:52,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:52,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:49:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:52,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:52,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:52,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:49:52,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113953567] [2021-01-26 14:49:52,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:52,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:52,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:52,760 INFO L87 Difference]: Start difference. First operand 17055 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:53,818 INFO L93 Difference]: Finished difference Result 17375 states and 38210 transitions. [2021-01-26 14:49:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-26 14:49:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:49:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:53,840 INFO L225 Difference]: With dead ends: 17375 [2021-01-26 14:49:53,840 INFO L226 Difference]: Without dead ends: 17105 [2021-01-26 14:49:53,841 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2021-01-26 14:49:53,841 INFO L78 Accepts]: Start accepts. Automaton has 17105 states. Word has length 126 [2021-01-26 14:49:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:53,841 INFO L481 AbstractCegarLoop]: Abstraction has 17105 states. [2021-01-26 14:49:53,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 17105 states. [2021-01-26 14:49:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:49:53,863 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:53,863 INFO L504 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] [2021-01-26 14:49:54,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:54,077 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:54,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:54,078 INFO L82 PathProgramCache]: Analyzing trace with hash -530553731, now seen corresponding path program 190 times [2021-01-26 14:49:54,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:54,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092610062] [2021-01-26 14:49:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:55,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092610062] [2021-01-26 14:49:55,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022891473] [2021-01-26 14:49:55,018 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 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 [2021-01-26 14:49:55,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:49:55,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:55,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-26 14:49:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:55,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:55,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:55,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:55,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:49:55,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897934658] [2021-01-26 14:49:55,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:55,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:55,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:55,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:55,226 INFO L87 Difference]: Start difference. First operand 17105 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:56,733 INFO L93 Difference]: Finished difference Result 17425 states and 38310 transitions. [2021-01-26 14:49:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-26 14:49:56,734 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:49:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:56,750 INFO L225 Difference]: With dead ends: 17425 [2021-01-26 14:49:56,751 INFO L226 Difference]: Without dead ends: 17155 [2021-01-26 14:49:56,751 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:49:56,751 INFO L78 Accepts]: Start accepts. Automaton has 17155 states. Word has length 126 [2021-01-26 14:49:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:56,751 INFO L481 AbstractCegarLoop]: Abstraction has 17155 states. [2021-01-26 14:49:56,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17155 states. [2021-01-26 14:49:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:49:56,769 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:56,769 INFO L504 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] [2021-01-26 14:49:56,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:49:56,984 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1121920171, now seen corresponding path program 191 times [2021-01-26 14:49:56,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:56,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825675776] [2021-01-26 14:49:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:57,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825675776] [2021-01-26 14:49:57,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595849589] [2021-01-26 14:49:57,468 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 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 [2021-01-26 14:49:57,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-26 14:49:57,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:57,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:49:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:57,586 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:57,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:57,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:49:57,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944242461] [2021-01-26 14:49:57,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:49:57,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:57,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:49:57,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:49:57,609 INFO L87 Difference]: Start difference. First operand 17155 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:57,859 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-26 14:49:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:49:58,930 INFO L93 Difference]: Finished difference Result 17475 states and 38410 transitions. [2021-01-26 14:49:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-26 14:49:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:49:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:49:58,947 INFO L225 Difference]: With dead ends: 17475 [2021-01-26 14:49:58,948 INFO L226 Difference]: Without dead ends: 17205 [2021-01-26 14:49:58,948 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2021-01-26 14:49:58,948 INFO L78 Accepts]: Start accepts. Automaton has 17205 states. Word has length 126 [2021-01-26 14:49:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:49:58,948 INFO L481 AbstractCegarLoop]: Abstraction has 17205 states. [2021-01-26 14:49:58,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:49:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 17205 states. [2021-01-26 14:49:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:49:58,963 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:49:58,963 INFO L504 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] [2021-01-26 14:49:59,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-01-26 14:49:59,167 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:49:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:49:59,168 INFO L82 PathProgramCache]: Analyzing trace with hash 587502459, now seen corresponding path program 192 times [2021-01-26 14:49:59,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:49:59,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830919515] [2021-01-26 14:49:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:49:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:49:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:59,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830919515] [2021-01-26 14:49:59,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229525808] [2021-01-26 14:49:59,730 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 [2021-01-26 14:49:59,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-26 14:49:59,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:49:59,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:49:59,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:49:59,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:49:59,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:49:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:49:59,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:49:59,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:49:59,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308771851] [2021-01-26 14:49:59,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:49:59,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:49:59,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:49:59,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:49:59,910 INFO L87 Difference]: Start difference. First operand 17205 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:01,407 INFO L93 Difference]: Finished difference Result 17525 states and 38510 transitions. [2021-01-26 14:50:01,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-26 14:50:01,408 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:01,425 INFO L225 Difference]: With dead ends: 17525 [2021-01-26 14:50:01,425 INFO L226 Difference]: Without dead ends: 17255 [2021-01-26 14:50:01,426 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:50:01,426 INFO L78 Accepts]: Start accepts. Automaton has 17255 states. Word has length 126 [2021-01-26 14:50:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:01,426 INFO L481 AbstractCegarLoop]: Abstraction has 17255 states. [2021-01-26 14:50:01,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 17255 states. [2021-01-26 14:50:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:01,441 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:01,441 INFO L504 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] [2021-01-26 14:50:01,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-01-26 14:50:01,642 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash 612308265, now seen corresponding path program 193 times [2021-01-26 14:50:01,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:01,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628320625] [2021-01-26 14:50:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:02,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628320625] [2021-01-26 14:50:02,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637542653] [2021-01-26 14:50:02,159 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 [2021-01-26 14:50:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:02,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:02,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:02,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:02,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:02,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:02,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466768740] [2021-01-26 14:50:02,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:02,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:02,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:02,297 INFO L87 Difference]: Start difference. First operand 17255 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:03,605 INFO L93 Difference]: Finished difference Result 17575 states and 38610 transitions. [2021-01-26 14:50:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-26 14:50:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:03,624 INFO L225 Difference]: With dead ends: 17575 [2021-01-26 14:50:03,625 INFO L226 Difference]: Without dead ends: 17305 [2021-01-26 14:50:03,625 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2021-01-26 14:50:03,625 INFO L78 Accepts]: Start accepts. Automaton has 17305 states. Word has length 126 [2021-01-26 14:50:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:03,625 INFO L481 AbstractCegarLoop]: Abstraction has 17305 states. [2021-01-26 14:50:03,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states. [2021-01-26 14:50:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:03,640 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:03,640 INFO L504 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] [2021-01-26 14:50:03,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-01-26 14:50:03,841 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:03,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:03,841 INFO L82 PathProgramCache]: Analyzing trace with hash 722061305, now seen corresponding path program 194 times [2021-01-26 14:50:03,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:03,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743681963] [2021-01-26 14:50:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:04,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743681963] [2021-01-26 14:50:04,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293974428] [2021-01-26 14:50:04,470 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 [2021-01-26 14:50:04,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:50:04,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:04,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:04,593 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:04,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:04,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:04,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:04,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365978063] [2021-01-26 14:50:04,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:04,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:04,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:04,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:04,654 INFO L87 Difference]: Start difference. First operand 17305 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:06,175 INFO L93 Difference]: Finished difference Result 17625 states and 38710 transitions. [2021-01-26 14:50:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-26 14:50:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:06,198 INFO L225 Difference]: With dead ends: 17625 [2021-01-26 14:50:06,198 INFO L226 Difference]: Without dead ends: 17355 [2021-01-26 14:50:06,198 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2021-01-26 14:50:06,199 INFO L78 Accepts]: Start accepts. Automaton has 17355 states. Word has length 126 [2021-01-26 14:50:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:06,199 INFO L481 AbstractCegarLoop]: Abstraction has 17355 states. [2021-01-26 14:50:06,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 17355 states. [2021-01-26 14:50:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:06,221 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:06,221 INFO L504 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] [2021-01-26 14:50:06,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-01-26 14:50:06,436 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash 226224935, now seen corresponding path program 195 times [2021-01-26 14:50:06,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:06,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646936263] [2021-01-26 14:50:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:06,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646936263] [2021-01-26 14:50:06,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754979566] [2021-01-26 14:50:06,925 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 [2021-01-26 14:50:07,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-26 14:50:07,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:07,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:07,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:07,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:07,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:07,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:07,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345799844] [2021-01-26 14:50:07,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:07,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:07,137 INFO L87 Difference]: Start difference. First operand 17355 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:08,395 INFO L93 Difference]: Finished difference Result 17675 states and 38810 transitions. [2021-01-26 14:50:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-26 14:50:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:08,415 INFO L225 Difference]: With dead ends: 17675 [2021-01-26 14:50:08,415 INFO L226 Difference]: Without dead ends: 17405 [2021-01-26 14:50:08,415 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2021-01-26 14:50:08,415 INFO L78 Accepts]: Start accepts. Automaton has 17405 states. Word has length 126 [2021-01-26 14:50:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:08,416 INFO L481 AbstractCegarLoop]: Abstraction has 17405 states. [2021-01-26 14:50:08,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 17405 states. [2021-01-26 14:50:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:08,552 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:08,552 INFO L504 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] [2021-01-26 14:50:08,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:50:08,762 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash 930144759, now seen corresponding path program 196 times [2021-01-26 14:50:08,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:08,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029452666] [2021-01-26 14:50:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:09,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029452666] [2021-01-26 14:50:09,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702648362] [2021-01-26 14:50:09,233 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 [2021-01-26 14:50:09,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:50:09,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:09,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-26 14:50:09,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:09,346 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:09,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:09,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:09,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:09,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581742740] [2021-01-26 14:50:09,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:09,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:09,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:09,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:09,395 INFO L87 Difference]: Start difference. First operand 17405 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:11,046 INFO L93 Difference]: Finished difference Result 17725 states and 38910 transitions. [2021-01-26 14:50:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-26 14:50:11,047 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:11,066 INFO L225 Difference]: With dead ends: 17725 [2021-01-26 14:50:11,067 INFO L226 Difference]: Without dead ends: 17455 [2021-01-26 14:50:11,067 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=831, Invalid=2709, Unknown=0, NotChecked=0, Total=3540 [2021-01-26 14:50:11,068 INFO L78 Accepts]: Start accepts. Automaton has 17455 states. Word has length 126 [2021-01-26 14:50:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:11,068 INFO L481 AbstractCegarLoop]: Abstraction has 17455 states. [2021-01-26 14:50:11,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 17455 states. [2021-01-26 14:50:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:11,087 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:11,087 INFO L504 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] [2021-01-26 14:50:11,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2021-01-26 14:50:11,301 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1814988453, now seen corresponding path program 197 times [2021-01-26 14:50:11,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:11,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549699470] [2021-01-26 14:50:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:11,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549699470] [2021-01-26 14:50:11,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869274117] [2021-01-26 14:50:11,757 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 [2021-01-26 14:50:11,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-26 14:50:11,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:11,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:11,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:12,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:12,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:12,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796576989] [2021-01-26 14:50:12,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:12,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:12,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:12,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:12,020 INFO L87 Difference]: Start difference. First operand 17455 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:13,488 INFO L93 Difference]: Finished difference Result 17775 states and 39010 transitions. [2021-01-26 14:50:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-26 14:50:13,488 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:13,505 INFO L225 Difference]: With dead ends: 17775 [2021-01-26 14:50:13,505 INFO L226 Difference]: Without dead ends: 17505 [2021-01-26 14:50:13,505 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2021-01-26 14:50:13,505 INFO L78 Accepts]: Start accepts. Automaton has 17505 states. Word has length 126 [2021-01-26 14:50:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:13,506 INFO L481 AbstractCegarLoop]: Abstraction has 17505 states. [2021-01-26 14:50:13,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 17505 states. [2021-01-26 14:50:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:13,520 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:13,520 INFO L504 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] [2021-01-26 14:50:13,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:50:13,721 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:13,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1221771637, now seen corresponding path program 198 times [2021-01-26 14:50:13,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:13,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865914096] [2021-01-26 14:50:13,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:14,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865914096] [2021-01-26 14:50:14,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891311245] [2021-01-26 14:50:14,231 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 [2021-01-26 14:50:14,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-26 14:50:14,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:14,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:14,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:14,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:14,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:14,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:14,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666491714] [2021-01-26 14:50:14,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:14,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:14,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:14,422 INFO L87 Difference]: Start difference. First operand 17505 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:16,330 INFO L93 Difference]: Finished difference Result 17825 states and 39110 transitions. [2021-01-26 14:50:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-26 14:50:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:16,347 INFO L225 Difference]: With dead ends: 17825 [2021-01-26 14:50:16,347 INFO L226 Difference]: Without dead ends: 17555 [2021-01-26 14:50:16,348 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2021-01-26 14:50:16,348 INFO L78 Accepts]: Start accepts. Automaton has 17555 states. Word has length 126 [2021-01-26 14:50:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:16,348 INFO L481 AbstractCegarLoop]: Abstraction has 17555 states. [2021-01-26 14:50:16,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 17555 states. [2021-01-26 14:50:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:16,363 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:16,363 INFO L504 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] [2021-01-26 14:50:16,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-01-26 14:50:16,563 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1049085859, now seen corresponding path program 199 times [2021-01-26 14:50:16,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:16,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078184516] [2021-01-26 14:50:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:17,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078184516] [2021-01-26 14:50:17,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942001904] [2021-01-26 14:50:17,071 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 [2021-01-26 14:50:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:17,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:17,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:17,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:17,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:17,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:17,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310303040] [2021-01-26 14:50:17,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:17,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:17,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:17,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:17,208 INFO L87 Difference]: Start difference. First operand 17555 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:17,769 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-01-26 14:50:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:18,893 INFO L93 Difference]: Finished difference Result 17875 states and 39210 transitions. [2021-01-26 14:50:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-26 14:50:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:18,915 INFO L225 Difference]: With dead ends: 17875 [2021-01-26 14:50:18,915 INFO L226 Difference]: Without dead ends: 17605 [2021-01-26 14:50:18,916 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2021-01-26 14:50:18,916 INFO L78 Accepts]: Start accepts. Automaton has 17605 states. Word has length 126 [2021-01-26 14:50:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:18,916 INFO L481 AbstractCegarLoop]: Abstraction has 17605 states. [2021-01-26 14:50:18,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17605 states. [2021-01-26 14:50:18,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:18,938 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:18,938 INFO L504 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] [2021-01-26 14:50:19,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:50:19,151 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1084209549, now seen corresponding path program 200 times [2021-01-26 14:50:19,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:19,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187290436] [2021-01-26 14:50:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:19,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187290436] [2021-01-26 14:50:19,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544347786] [2021-01-26 14:50:19,650 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 [2021-01-26 14:50:19,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:50:19,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:19,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:19,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:19,780 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:19,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:19,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:19,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:19,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140771884] [2021-01-26 14:50:19,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:19,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:19,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:19,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:19,835 INFO L87 Difference]: Start difference. First operand 17605 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:21,810 INFO L93 Difference]: Finished difference Result 17925 states and 39310 transitions. [2021-01-26 14:50:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-26 14:50:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:21,833 INFO L225 Difference]: With dead ends: 17925 [2021-01-26 14:50:21,833 INFO L226 Difference]: Without dead ends: 17655 [2021-01-26 14:50:21,834 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2021-01-26 14:50:21,834 INFO L78 Accepts]: Start accepts. Automaton has 17655 states. Word has length 126 [2021-01-26 14:50:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:21,834 INFO L481 AbstractCegarLoop]: Abstraction has 17655 states. [2021-01-26 14:50:21,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 17655 states. [2021-01-26 14:50:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:21,856 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:21,856 INFO L504 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] [2021-01-26 14:50:22,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:50:22,069 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:22,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:22,070 INFO L82 PathProgramCache]: Analyzing trace with hash 806391329, now seen corresponding path program 201 times [2021-01-26 14:50:22,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:22,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213366461] [2021-01-26 14:50:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:22,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213366461] [2021-01-26 14:50:22,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079931722] [2021-01-26 14:50:22,699 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 [2021-01-26 14:50:22,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-26 14:50:22,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:22,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:22,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:22,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:22,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:22,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:22,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173389322] [2021-01-26 14:50:22,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:22,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:22,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:22,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:22,870 INFO L87 Difference]: Start difference. First operand 17655 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:24,355 INFO L93 Difference]: Finished difference Result 17975 states and 39410 transitions. [2021-01-26 14:50:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-26 14:50:24,356 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:24,375 INFO L225 Difference]: With dead ends: 17975 [2021-01-26 14:50:24,375 INFO L226 Difference]: Without dead ends: 17705 [2021-01-26 14:50:24,376 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-01-26 14:50:24,376 INFO L78 Accepts]: Start accepts. Automaton has 17705 states. Word has length 126 [2021-01-26 14:50:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:24,376 INFO L481 AbstractCegarLoop]: Abstraction has 17705 states. [2021-01-26 14:50:24,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 17705 states. [2021-01-26 14:50:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:24,396 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:24,396 INFO L504 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] [2021-01-26 14:50:24,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:50:24,610 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2028097777, now seen corresponding path program 202 times [2021-01-26 14:50:24,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:24,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612647507] [2021-01-26 14:50:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:25,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612647507] [2021-01-26 14:50:25,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347517675] [2021-01-26 14:50:25,050 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 [2021-01-26 14:50:25,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:50:25,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:25,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-26 14:50:25,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:25,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:25,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:25,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:25,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:25,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985417203] [2021-01-26 14:50:25,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:25,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:25,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:25,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:25,214 INFO L87 Difference]: Start difference. First operand 17705 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:27,372 INFO L93 Difference]: Finished difference Result 18025 states and 39510 transitions. [2021-01-26 14:50:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-26 14:50:27,373 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:27,390 INFO L225 Difference]: With dead ends: 18025 [2021-01-26 14:50:27,390 INFO L226 Difference]: Without dead ends: 17755 [2021-01-26 14:50:27,391 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2021-01-26 14:50:27,391 INFO L78 Accepts]: Start accepts. Automaton has 17755 states. Word has length 126 [2021-01-26 14:50:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:27,391 INFO L481 AbstractCegarLoop]: Abstraction has 17755 states. [2021-01-26 14:50:27,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 17755 states. [2021-01-26 14:50:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:27,406 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:27,406 INFO L504 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] [2021-01-26 14:50:27,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-01-26 14:50:27,606 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 938064415, now seen corresponding path program 203 times [2021-01-26 14:50:27,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:27,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618389155] [2021-01-26 14:50:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:27,808 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-01-26 14:50:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:28,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618389155] [2021-01-26 14:50:28,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572862247] [2021-01-26 14:50:28,207 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 [2021-01-26 14:50:28,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-26 14:50:28,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:28,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:28,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:28,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:28,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:28,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:28,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421688725] [2021-01-26 14:50:28,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:28,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:28,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:28,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:28,360 INFO L87 Difference]: Start difference. First operand 17755 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:30,150 INFO L93 Difference]: Finished difference Result 18075 states and 39610 transitions. [2021-01-26 14:50:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-26 14:50:30,150 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:30,167 INFO L225 Difference]: With dead ends: 18075 [2021-01-26 14:50:30,167 INFO L226 Difference]: Without dead ends: 17805 [2021-01-26 14:50:30,168 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2021-01-26 14:50:30,168 INFO L78 Accepts]: Start accepts. Automaton has 17805 states. Word has length 126 [2021-01-26 14:50:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:30,168 INFO L481 AbstractCegarLoop]: Abstraction has 17805 states. [2021-01-26 14:50:30,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 17805 states. [2021-01-26 14:50:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:30,183 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:30,183 INFO L504 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] [2021-01-26 14:50:30,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2021-01-26 14:50:30,383 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:30,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1857667311, now seen corresponding path program 204 times [2021-01-26 14:50:30,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:30,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247512080] [2021-01-26 14:50:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:30,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247512080] [2021-01-26 14:50:30,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484790227] [2021-01-26 14:50:30,880 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 [2021-01-26 14:50:30,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-26 14:50:30,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:30,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:30,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:31,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:31,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:31,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:31,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:31,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173867239] [2021-01-26 14:50:31,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:31,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:31,068 INFO L87 Difference]: Start difference. First operand 17805 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:33,540 INFO L93 Difference]: Finished difference Result 18165 states and 39790 transitions. [2021-01-26 14:50:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-01-26 14:50:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:33,562 INFO L225 Difference]: With dead ends: 18165 [2021-01-26 14:50:33,562 INFO L226 Difference]: Without dead ends: 17895 [2021-01-26 14:50:33,562 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2021-01-26 14:50:33,563 INFO L78 Accepts]: Start accepts. Automaton has 17895 states. Word has length 126 [2021-01-26 14:50:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:33,563 INFO L481 AbstractCegarLoop]: Abstraction has 17895 states. [2021-01-26 14:50:33,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17895 states. [2021-01-26 14:50:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:33,584 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:33,584 INFO L504 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] [2021-01-26 14:50:33,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-01-26 14:50:33,797 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2085224067, now seen corresponding path program 205 times [2021-01-26 14:50:33,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:33,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880063745] [2021-01-26 14:50:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:34,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880063745] [2021-01-26 14:50:34,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582753504] [2021-01-26 14:50:34,251 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 [2021-01-26 14:50:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:34,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:34,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:34,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:34,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:34,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-01-26 14:50:34,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569640414] [2021-01-26 14:50:34,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-26 14:50:34,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:34,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-26 14:50:34,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:34,395 INFO L87 Difference]: Start difference. First operand 17895 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:36,191 INFO L93 Difference]: Finished difference Result 19367 states and 43154 transitions. [2021-01-26 14:50:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-26 14:50:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2021-01-26 14:50:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:36,216 INFO L225 Difference]: With dead ends: 19367 [2021-01-26 14:50:36,216 INFO L226 Difference]: Without dead ends: 19097 [2021-01-26 14:50:36,217 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2021-01-26 14:50:36,217 INFO L78 Accepts]: Start accepts. Automaton has 19097 states. Word has length 126 [2021-01-26 14:50:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:36,217 INFO L481 AbstractCegarLoop]: Abstraction has 19097 states. [2021-01-26 14:50:36,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 19097 states. [2021-01-26 14:50:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-26 14:50:36,240 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:36,240 INFO L504 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] [2021-01-26 14:50:36,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-01-26 14:50:36,453 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:36,454 INFO L82 PathProgramCache]: Analyzing trace with hash -2088197297, now seen corresponding path program 206 times [2021-01-26 14:50:36,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:36,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150727974] [2021-01-26 14:50:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:36,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150727974] [2021-01-26 14:50:36,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516964159] [2021-01-26 14:50:36,932 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 [2021-01-26 14:50:37,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:50:37,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-26 14:50:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:37,057 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:50:37,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:50:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:37,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:50:37,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-26 14:50:37,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052175377] [2021-01-26 14:50:37,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-26 14:50:37,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-26 14:50:37,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:50:37,108 INFO L87 Difference]: Start difference. First operand 19097 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:38,561 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2021-01-26 14:50:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:39,367 INFO L93 Difference]: Finished difference Result 18521 states and 40612 transitions. [2021-01-26 14:50:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-01-26 14:50:39,368 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2021-01-26 14:50:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:39,386 INFO L225 Difference]: With dead ends: 18521 [2021-01-26 14:50:39,387 INFO L226 Difference]: Without dead ends: 18060 [2021-01-26 14:50:39,387 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1351, Invalid=3341, Unknown=0, NotChecked=0, Total=4692 [2021-01-26 14:50:39,387 INFO L78 Accepts]: Start accepts. Automaton has 18060 states. Word has length 126 [2021-01-26 14:50:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:39,387 INFO L481 AbstractCegarLoop]: Abstraction has 18060 states. [2021-01-26 14:50:39,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states. [2021-01-26 14:50:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-01-26 14:50:39,408 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:39,408 INFO L504 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] [2021-01-26 14:50:39,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2021-01-26 14:50:39,622 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash -261611857, now seen corresponding path program 207 times [2021-01-26 14:50:39,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:39,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989295797] [2021-01-26 14:50:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 405 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:50:40,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989295797] [2021-01-26 14:50:40,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414162532] [2021-01-26 14:50:40,764 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 [2021-01-26 14:50:40,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-01-26 14:50:40,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:40,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:50:40,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 442 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:50:40,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-26 14:50:40,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2021-01-26 14:50:40,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640023489] [2021-01-26 14:50:40,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:50:40,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:40,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:50:40,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:40,924 INFO L87 Difference]: Start difference. First operand 18060 states. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 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) [2021-01-26 14:50:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:42,109 INFO L93 Difference]: Finished difference Result 74395 states and 160864 transitions. [2021-01-26 14:50:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:50:42,110 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 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 131 [2021-01-26 14:50:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:42,118 INFO L225 Difference]: With dead ends: 74395 [2021-01-26 14:50:42,118 INFO L226 Difference]: Without dead ends: 8086 [2021-01-26 14:50:42,118 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980 [2021-01-26 14:50:42,118 INFO L78 Accepts]: Start accepts. Automaton has 8086 states. Word has length 131 [2021-01-26 14:50:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:42,119 INFO L481 AbstractCegarLoop]: Abstraction has 8086 states. [2021-01-26 14:50:42,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 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) [2021-01-26 14:50:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states. [2021-01-26 14:50:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-01-26 14:50:42,126 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:50:42,126 INFO L504 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] [2021-01-26 14:50:42,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:50:42,327 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:50:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:50:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2002478254, now seen corresponding path program 208 times [2021-01-26 14:50:42,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:50:42,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037942793] [2021-01-26 14:50:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:50:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:50:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 406 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:42,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037942793] [2021-01-26 14:50:42,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139631084] [2021-01-26 14:50:42,763 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 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 [2021-01-26 14:50:42,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:50:42,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:50:42,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-26 14:50:42,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:50:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:50:42,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-26 14:50:42,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2021-01-26 14:50:42,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596679946] [2021-01-26 14:50:42,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-26 14:50:42,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:50:42,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-26 14:50:42,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:50:42,913 INFO L87 Difference]: Start difference. First operand 8086 states. Second operand has 23 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:50:43,630 INFO L93 Difference]: Finished difference Result 31921 states and 65032 transitions. [2021-01-26 14:50:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-26 14:50:43,630 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 0 states have call successors, (0), 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 [2021-01-26 14:50:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:50:43,631 INFO L225 Difference]: With dead ends: 31921 [2021-01-26 14:50:43,631 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 14:50:43,631 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980 [2021-01-26 14:50:43,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 131 [2021-01-26 14:50:43,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:50:43,631 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 14:50:43,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:50:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 14:50:43,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 14:50:43,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2021-01-26 14:50:43,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 02:50:43 BasicIcfg [2021-01-26 14:50:43,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 14:50:43,839 INFO L168 Benchmark]: Toolchain (without parser) took 366483.66 ms. Allocated memory was 302.0 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 276.8 MB in the beginning and 439.4 MB in the end (delta: -162.5 MB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. [2021-01-26 14:50:43,840 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 14:50:43,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.94 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 247.0 MB in the end (delta: 28.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-26 14:50:43,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 302.0 MB. Free memory was 246.8 MB in the beginning and 245.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 14:50:43,840 INFO L168 Benchmark]: Boogie Preprocessor took 30.03 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 243.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 14:50:43,840 INFO L168 Benchmark]: RCFGBuilder took 513.87 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 264.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2021-01-26 14:50:43,841 INFO L168 Benchmark]: TraceAbstraction took 365166.26 ms. Allocated memory was 302.0 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 264.7 MB in the beginning and 439.4 MB in the end (delta: -174.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. [2021-01-26 14:50:43,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 700.94 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 247.0 MB in the end (delta: 28.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 302.0 MB. Free memory was 246.8 MB in the beginning and 245.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.03 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 243.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 513.87 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 264.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 365166.26 ms. Allocated memory was 302.0 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 264.7 MB in the beginning and 439.4 MB in the end (delta: -174.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 693]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 365.0s, OverallIterations: 217, TraceHistogramMax: 11, AutomataDifference: 213.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 20011 SDtfs, 146169 SDslu, 176470 SDs, 0 SdLazy, 33233 SolverSat, 22681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29505 GetRequests, 20235 SyntacticMatches, 198 SemanticMatches, 9072 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99415 ImplicationChecksByTransitivity, 213.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19097occurred in iteration=214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.5s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 80.7s InterpolantComputationTime, 40952 NumberOfCodeBlocks, 40948 NumberOfCodeBlocksAsserted, 1208 NumberOfCheckSat, 40524 ConstructedInterpolants, 0 QuantifiedInterpolants, 16912220 SizeOfPredicates, 3633 NumberOfNonLiveVariables, 42378 ConjunctsInSsa, 4294 ConjunctsInUnsatCore, 428 InterpolantComputations, 8 PerfectInterpolantSequences, 1706/85514 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 proved your program to be correct! Received shutdown request...