/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:10:43,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:10:43,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:10:43,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 22:10:43,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 22:10:43,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 22:10:43,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 22:10:43,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 22:10:43,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 22:10:43,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 22:10:43,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 22:10:43,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 22:10:43,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:10:43,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:10:43,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:10:43,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:10:43,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:10:43,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:10:43,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:10:43,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:10:43,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:10:43,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:10:43,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:10:43,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:10:43,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 22:10:43,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 22:10:43,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 22:10:43,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 22:10:43,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 22:10:43,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 22:10:43,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 22:10:43,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 22:10:43,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 22:10:43,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 22:10:43,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 22:10:43,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 22:10:43,736 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-Delay.epf [2021-07-09 22:10:43,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:10:43,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:10:43,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:10:43,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:10:43,781 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:10:43,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:10:43,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:10:43,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:10:43,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:10:43,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:10:43,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:10:43,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:10:43,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:10:43,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:10:43,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:10:43,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:10:43,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:10:43,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:10:43,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:10:43,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:10:43,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:10:43,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:10:43,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:10:43,784 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:10:43,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:10:44,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:10:44,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:10:44,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:10:44,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 22:10:44,074 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 22:10:44,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2021-07-09 22:10:44,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1df25a0/ca9bdefb362e4db6b4463313cf3e92d0/FLAGc50aca2f3 [2021-07-09 22:10:44,486 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 22:10:44,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2021-07-09 22:10:44,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1df25a0/ca9bdefb362e4db6b4463313cf3e92d0/FLAGc50aca2f3 [2021-07-09 22:10:44,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1df25a0/ca9bdefb362e4db6b4463313cf3e92d0 [2021-07-09 22:10:44,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:10:44,887 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 22:10:44,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 22:10:44,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 22:10:44,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 22:10:44,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:10:44" (1/1) ... [2021-07-09 22:10:44,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b03bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:44, skipping insertion in model container [2021-07-09 22:10:44,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 10:10:44" (1/1) ... [2021-07-09 22:10:44,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 22:10:44,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 22:10:45,044 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i[950,963] [2021-07-09 22:10:45,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:10:45,175 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 22:10:45,185 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i[950,963] [2021-07-09 22:10:45,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 22:10:45,231 INFO L208 MainTranslator]: Completed translation [2021-07-09 22:10:45,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45 WrapperNode [2021-07-09 22:10:45,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 22:10:45,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:10:45,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:10:45,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:10:45,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:10:45,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:10:45,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:10:45,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:10:45,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (1/1) ... [2021-07-09 22:10:45,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:10:45,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:10:45,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:10:45,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:10:45,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (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 [2021-07-09 22:10:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 22:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 22:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 22:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 22:10:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:10:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:10:45,344 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 22:10:45,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:10:45,573 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 22:10:45,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:10:45 BoogieIcfgContainer [2021-07-09 22:10:45,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:10:45,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:10:45,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:10:45,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:10:45,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 10:10:44" (1/3) ... [2021-07-09 22:10:45,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c366218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:10:45, skipping insertion in model container [2021-07-09 22:10:45,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 10:10:45" (2/3) ... [2021-07-09 22:10:45,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c366218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:10:45, skipping insertion in model container [2021-07-09 22:10:45,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:10:45" (3/3) ... [2021-07-09 22:10:45,583 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2021-07-09 22:10:45,587 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:10:45,587 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:10:45,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:10:45,587 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:10:45,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,625 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,625 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,645 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,645 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 22:10:45,657 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 22:10:45,673 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 22:10:45,696 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:10:45,696 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:10:45,697 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:10:45,697 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:10:45,697 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:10:45,697 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:10:45,697 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:10:45,697 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:10:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 2.010696308724832) internal successors, (9587), 5558 states have internal predecessors, (9587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-09 22:10:46,208 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:46,209 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:46,209 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-07-09 22:10:46,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:46,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053591443] [2021-07-09 22:10:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:46,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:46,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:46,473 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-09 22:10:46,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 22:10:46,487 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:46,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:46,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:46,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:46,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:46,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:46,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:46,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:46,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:46,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053591443] [2021-07-09 22:10:46,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053591443] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:46,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:46,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:10:46,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604305728] [2021-07-09 22:10:46,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:10:46,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:10:46,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:10:46,539 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 2.010696308724832) internal successors, (9587), 5558 states have internal predecessors, (9587), 0 states have call successors, (0), 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 8.166666666666666) internal successors, (49), 6 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) [2021-07-09 22:10:46,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:46,778 INFO L93 Difference]: Finished difference Result 10460 states and 18714 transitions. [2021-07-09 22:10:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:10:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 49 [2021-07-09 22:10:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:46,856 INFO L225 Difference]: With dead ends: 10460 [2021-07-09 22:10:46,856 INFO L226 Difference]: Without dead ends: 4110 [2021-07-09 22:10:46,857 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:10:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-07-09 22:10:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3154. [2021-07-09 22:10:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 3105 states have (on average 2.1594202898550723) internal successors, (6705), 3153 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 6705 transitions. [2021-07-09 22:10:47,007 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 6705 transitions. Word has length 49 [2021-07-09 22:10:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:47,008 INFO L482 AbstractCegarLoop]: Abstraction has 3154 states and 6705 transitions. [2021-07-09 22:10:47,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-07-09 22:10:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 6705 transitions. [2021-07-09 22:10:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-09 22:10:47,012 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:47,013 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:47,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:10:47,013 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:47,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2100772178, now seen corresponding path program 1 times [2021-07-09 22:10:47,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:47,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640766822] [2021-07-09 22:10:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:47,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:47,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:47,086 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-09 22:10:47,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 22:10:47,105 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:47,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:47,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:47,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:47,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:47,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:47,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640766822] [2021-07-09 22:10:47,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640766822] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:47,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:47,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:10:47,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842286230] [2021-07-09 22:10:47,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:10:47,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:47,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:10:47,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:10:47,145 INFO L87 Difference]: Start difference. First operand 3154 states and 6705 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:47,369 INFO L93 Difference]: Finished difference Result 4678 states and 10363 transitions. [2021-07-09 22:10:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 22:10:47,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have 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 [2021-07-09 22:10:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:47,383 INFO L225 Difference]: With dead ends: 4678 [2021-07-09 22:10:47,383 INFO L226 Difference]: Without dead ends: 3214 [2021-07-09 22:10:47,384 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 147.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:10:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-07-09 22:10:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2454. [2021-07-09 22:10:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2419 states have (on average 2.1744522529971064) internal successors, (5260), 2453 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 5260 transitions. [2021-07-09 22:10:47,460 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 5260 transitions. Word has length 51 [2021-07-09 22:10:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:47,461 INFO L482 AbstractCegarLoop]: Abstraction has 2454 states and 5260 transitions. [2021-07-09 22:10:47,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 5260 transitions. [2021-07-09 22:10:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 22:10:47,465 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:47,466 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:47,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 22:10:47,467 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1410703566, now seen corresponding path program 1 times [2021-07-09 22:10:47,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:47,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083491748] [2021-07-09 22:10:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:47,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:47,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:47,535 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-09 22:10:47,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 22:10:47,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:47,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:47,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:47,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:47,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:47,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:47,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083491748] [2021-07-09 22:10:47,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083491748] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:47,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:47,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:10:47,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888904166] [2021-07-09 22:10:47,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:10:47,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:47,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:10:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:10:47,574 INFO L87 Difference]: Start difference. First operand 2454 states and 5260 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:47,732 INFO L93 Difference]: Finished difference Result 3754 states and 8438 transitions. [2021-07-09 22:10:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 22:10:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-07-09 22:10:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:47,743 INFO L225 Difference]: With dead ends: 3754 [2021-07-09 22:10:47,743 INFO L226 Difference]: Without dead ends: 2714 [2021-07-09 22:10:47,743 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:10:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-07-09 22:10:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1942. [2021-07-09 22:10:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1917 states have (on average 2.2451747522170056) internal successors, (4304), 1941 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 4304 transitions. [2021-07-09 22:10:47,785 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 4304 transitions. Word has length 52 [2021-07-09 22:10:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:47,785 INFO L482 AbstractCegarLoop]: Abstraction has 1942 states and 4304 transitions. [2021-07-09 22:10:47,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 4304 transitions. [2021-07-09 22:10:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 22:10:47,787 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:47,788 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:47,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 22:10:47,788 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:47,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:47,788 INFO L82 PathProgramCache]: Analyzing trace with hash -154949359, now seen corresponding path program 1 times [2021-07-09 22:10:47,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:47,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707402810] [2021-07-09 22:10:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:47,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:47,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:47,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:47,825 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-09 22:10:47,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 22:10:47,835 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:47,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:47,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:47,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:47,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:47,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:47,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707402810] [2021-07-09 22:10:47,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707402810] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:47,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:47,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:10:47,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361395114] [2021-07-09 22:10:47,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:10:47,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:47,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:10:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:10:47,866 INFO L87 Difference]: Start difference. First operand 1942 states and 4304 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:47,971 INFO L93 Difference]: Finished difference Result 2542 states and 5781 transitions. [2021-07-09 22:10:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 22:10:47,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 22:10:47,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:47,975 INFO L225 Difference]: With dead ends: 2542 [2021-07-09 22:10:47,975 INFO L226 Difference]: Without dead ends: 1074 [2021-07-09 22:10:47,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:10:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-07-09 22:10:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 850. [2021-07-09 22:10:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 825 states have (on average 2.264242424242424) internal successors, (1868), 849 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1868 transitions. [2021-07-09 22:10:47,990 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1868 transitions. Word has length 54 [2021-07-09 22:10:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:47,990 INFO L482 AbstractCegarLoop]: Abstraction has 850 states and 1868 transitions. [2021-07-09 22:10:47,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1868 transitions. [2021-07-09 22:10:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-09 22:10:47,991 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:47,991 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:47,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 22:10:47,992 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:47,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:47,992 INFO L82 PathProgramCache]: Analyzing trace with hash 453940736, now seen corresponding path program 1 times [2021-07-09 22:10:47,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:47,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462831625] [2021-07-09 22:10:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:48,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,038 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:48,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:48,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:48,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:48,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462831625] [2021-07-09 22:10:48,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462831625] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:48,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:48,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:10:48,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447629495] [2021-07-09 22:10:48,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:10:48,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:10:48,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:10:48,071 INFO L87 Difference]: Start difference. First operand 850 states and 1868 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-07-09 22:10:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:48,149 INFO L93 Difference]: Finished difference Result 980 states and 2228 transitions. [2021-07-09 22:10:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:10:48,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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 [2021-07-09 22:10:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:48,152 INFO L225 Difference]: With dead ends: 980 [2021-07-09 22:10:48,152 INFO L226 Difference]: Without dead ends: 774 [2021-07-09 22:10:48,153 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:10:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-07-09 22:10:48,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-07-09 22:10:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 754 states have (on average 2.197612732095491) internal successors, (1657), 773 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1657 transitions. [2021-07-09 22:10:48,165 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1657 transitions. Word has length 56 [2021-07-09 22:10:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:48,166 INFO L482 AbstractCegarLoop]: Abstraction has 774 states and 1657 transitions. [2021-07-09 22:10:48,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2021-07-09 22:10:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1657 transitions. [2021-07-09 22:10:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-09 22:10:48,167 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:48,167 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:48,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 22:10:48,167 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:48,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1444757268, now seen corresponding path program 1 times [2021-07-09 22:10:48,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:48,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166955441] [2021-07-09 22:10:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:48,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,228 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:10:48,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:10:48,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:10:48,246 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:10:48,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:48,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:48,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166955441] [2021-07-09 22:10:48,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166955441] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:48,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:48,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 22:10:48,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650833232] [2021-07-09 22:10:48,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 22:10:48,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:48,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 22:10:48,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 22:10:48,265 INFO L87 Difference]: Start difference. First operand 774 states and 1657 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:48,339 INFO L93 Difference]: Finished difference Result 966 states and 2043 transitions. [2021-07-09 22:10:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:10:48,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-09 22:10:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:48,342 INFO L225 Difference]: With dead ends: 966 [2021-07-09 22:10:48,342 INFO L226 Difference]: Without dead ends: 662 [2021-07-09 22:10:48,342 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 22:10:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-07-09 22:10:48,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2021-07-09 22:10:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 642 states have (on average 2.264797507788162) internal successors, (1454), 661 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1454 transitions. [2021-07-09 22:10:48,362 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1454 transitions. Word has length 57 [2021-07-09 22:10:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:48,363 INFO L482 AbstractCegarLoop]: Abstraction has 662 states and 1454 transitions. [2021-07-09 22:10:48,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1454 transitions. [2021-07-09 22:10:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 22:10:48,364 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:48,364 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:48,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 22:10:48,364 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1127767543, now seen corresponding path program 1 times [2021-07-09 22:10:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:48,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069758227] [2021-07-09 22:10:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:48,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,425 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:10:48,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:10:48,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:10:48,444 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:10:48,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:48,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:48,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069758227] [2021-07-09 22:10:48,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069758227] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:48,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:48,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 22:10:48,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825153633] [2021-07-09 22:10:48,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 22:10:48,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:48,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 22:10:48,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 22:10:48,453 INFO L87 Difference]: Start difference. First operand 662 states and 1454 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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) [2021-07-09 22:10:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:48,546 INFO L93 Difference]: Finished difference Result 671 states and 1409 transitions. [2021-07-09 22:10:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 22:10:48,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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 58 [2021-07-09 22:10:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:48,548 INFO L225 Difference]: With dead ends: 671 [2021-07-09 22:10:48,548 INFO L226 Difference]: Without dead ends: 443 [2021-07-09 22:10:48,548 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 22:10:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-07-09 22:10:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-07-09 22:10:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 425 states have (on average 2.192941176470588) internal successors, (932), 442 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 932 transitions. [2021-07-09 22:10:48,555 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 932 transitions. Word has length 58 [2021-07-09 22:10:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:48,555 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 932 transitions. [2021-07-09 22:10:48,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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) [2021-07-09 22:10:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 932 transitions. [2021-07-09 22:10:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-09 22:10:48,556 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:48,557 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:48,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 22:10:48,557 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:48,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1185730584, now seen corresponding path program 1 times [2021-07-09 22:10:48,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:48,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139980715] [2021-07-09 22:10:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:48,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,628 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-09 22:10:48,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 22:10:48,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 22:10:48,653 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-09 22:10:48,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:48,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:48,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139980715] [2021-07-09 22:10:48,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139980715] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:48,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:48,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:10:48,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123955798] [2021-07-09 22:10:48,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:10:48,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:48,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:10:48,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:10:48,663 INFO L87 Difference]: Start difference. First operand 443 states and 932 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-07-09 22:10:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:48,765 INFO L93 Difference]: Finished difference Result 335 states and 642 transitions. [2021-07-09 22:10:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 22:10:48,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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 59 [2021-07-09 22:10:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:48,766 INFO L225 Difference]: With dead ends: 335 [2021-07-09 22:10:48,766 INFO L226 Difference]: Without dead ends: 200 [2021-07-09 22:10:48,767 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 22:10:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-07-09 22:10:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-07-09 22:10:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 191 states have (on average 1.8219895287958114) internal successors, (348), 199 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 348 transitions. [2021-07-09 22:10:48,770 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 348 transitions. Word has length 59 [2021-07-09 22:10:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:48,770 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 348 transitions. [2021-07-09 22:10:48,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-07-09 22:10:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 348 transitions. [2021-07-09 22:10:48,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-09 22:10:48,771 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:48,771 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:48,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 22:10:48,771 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:48,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1723882905, now seen corresponding path program 1 times [2021-07-09 22:10:48,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:48,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156165651] [2021-07-09 22:10:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:48,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,826 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-09 22:10:48,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 22:10:48,835 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:48,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:48,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:48,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:48,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156165651] [2021-07-09 22:10:48,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156165651] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:48,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:48,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:10:48,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672938004] [2021-07-09 22:10:48,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:10:48,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:10:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:10:48,872 INFO L87 Difference]: Start difference. First operand 200 states and 348 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2021-07-09 22:10:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:48,931 INFO L93 Difference]: Finished difference Result 313 states and 580 transitions. [2021-07-09 22:10:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 22:10:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 [2021-07-09 22:10:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:48,933 INFO L225 Difference]: With dead ends: 313 [2021-07-09 22:10:48,933 INFO L226 Difference]: Without dead ends: 198 [2021-07-09 22:10:48,933 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 22:10:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-07-09 22:10:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-07-09 22:10:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 189 states have (on average 1.8253968253968254) internal successors, (345), 197 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 345 transitions. [2021-07-09 22:10:48,936 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 345 transitions. Word has length 61 [2021-07-09 22:10:48,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:48,936 INFO L482 AbstractCegarLoop]: Abstraction has 198 states and 345 transitions. [2021-07-09 22:10:48,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2021-07-09 22:10:48,936 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 345 transitions. [2021-07-09 22:10:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-09 22:10:48,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:10:48,937 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:10:48,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 22:10:48,937 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 22:10:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:10:48,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1151290121, now seen corresponding path program 2 times [2021-07-09 22:10:48,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:10:48,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945274112] [2021-07-09 22:10:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:10:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:10:48,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:48,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 22:10:48,968 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-09 22:10:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 22:10:48,977 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-09 22:10:48,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 22:10:48,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:48,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 22:10:49,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:10:49,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:10:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:10:49,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:10:49,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945274112] [2021-07-09 22:10:49,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945274112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:10:49,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:10:49,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 22:10:49,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862893082] [2021-07-09 22:10:49,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 22:10:49,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:10:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 22:10:49,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 22:10:49,007 INFO L87 Difference]: Start difference. First operand 198 states and 345 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2021-07-09 22:10:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:10:49,054 INFO L93 Difference]: Finished difference Result 162 states and 285 transitions. [2021-07-09 22:10:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 22:10:49,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 [2021-07-09 22:10:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:10:49,054 INFO L225 Difference]: With dead ends: 162 [2021-07-09 22:10:49,054 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:10:49,055 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 22:10:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:10:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:10:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:10:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:10:49,055 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-09 22:10:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:10:49,055 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:10:49,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2021-07-09 22:10:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:10:49,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:10:49,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 22:10:49,057 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:10:49,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:10:49 BasicIcfg [2021-07-09 22:10:49,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:10:49,059 INFO L168 Benchmark]: Toolchain (without parser) took 4171.99 ms. Allocated memory was 224.4 MB in the beginning and 339.7 MB in the end (delta: 115.3 MB). Free memory was 187.3 MB in the beginning and 254.1 MB in the end (delta: -66.8 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2021-07-09 22:10:49,059 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 224.4 MB. Free memory is still 205.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:10:49,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.84 ms. Allocated memory is still 224.4 MB. Free memory was 187.1 MB in the beginning and 196.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 22:10:49,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.17 ms. Allocated memory is still 224.4 MB. Free memory was 196.7 MB in the beginning and 194.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:10:49,059 INFO L168 Benchmark]: Boogie Preprocessor took 15.47 ms. Allocated memory is still 224.4 MB. Free memory was 194.6 MB in the beginning and 193.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:10:49,059 INFO L168 Benchmark]: RCFGBuilder took 300.68 ms. Allocated memory is still 224.4 MB. Free memory was 193.5 MB in the beginning and 169.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-09 22:10:49,060 INFO L168 Benchmark]: TraceAbstraction took 3479.18 ms. Allocated memory was 224.4 MB in the beginning and 339.7 MB in the end (delta: 115.3 MB). Free memory was 168.9 MB in the beginning and 254.1 MB in the end (delta: -85.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 8.0 GB. [2021-07-09 22:10:49,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 224.4 MB. Free memory is still 205.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.84 ms. Allocated memory is still 224.4 MB. Free memory was 187.1 MB in the beginning and 196.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.17 ms. Allocated memory is still 224.4 MB. Free memory was 196.7 MB in the beginning and 194.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.47 ms. Allocated memory is still 224.4 MB. Free memory was 194.6 MB in the beginning and 193.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 300.68 ms. Allocated memory is still 224.4 MB. Free memory was 193.5 MB in the beginning and 169.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3479.18 ms. Allocated memory was 224.4 MB in the beginning and 339.7 MB in the end (delta: 115.3 MB). Free memory was 168.9 MB in the beginning and 254.1 MB in the end (delta: -85.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18424, positive: 17668, positive conditional: 17668, positive unconditional: 0, negative: 756, negative conditional: 756, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18345, positive: 17668, positive conditional: 0, positive unconditional: 17668, negative: 677, negative conditional: 0, negative unconditional: 677, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 658, positive: 637, positive conditional: 0, positive unconditional: 637, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 658, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18345, positive: 17031, positive conditional: 0, positive unconditional: 17031, negative: 656, negative conditional: 0, negative unconditional: 656, unknown: 658, unknown conditional: 0, unknown unconditional: 658] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 637, Positive conditional cache size: 0, Positive unconditional cache size: 637, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 79 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3361.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 47.6ms, AutomataDifference: 1329.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 478.6ms, PartialOrderReductionTime: 461.6ms, HoareTripleCheckerStatistics: 960 SDtfs, 1271 SDslu, 3182 SDs, 0 SdLazy, 484 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 289.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 915.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 316.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2712 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.4ms SsaConstructionTime, 195.3ms SatisfiabilityAnalysisTime, 800.5ms InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 548 ConstructedInterpolants, 0 QuantifiedInterpolants, 2156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...