/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:51:26,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:51:26,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:51:26,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:51:26,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:51:26,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:51:26,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:51:26,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:51:26,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:51:26,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:51:26,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:51:26,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:51:26,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:51:26,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:51:26,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:51:26,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:51:26,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:51:26,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:51:26,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:51:26,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:51:26,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:51:26,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:51:26,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:51:26,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:51:26,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:51:26,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:51:26,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:51:26,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:51:26,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:51:26,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:51:26,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:51:26,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:51:26,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:51:26,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:51:26,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:51:26,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:51:26,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:51:26,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:51:26,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:51:26,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:51:26,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:51:26,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:51:26,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:51:26,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:51:26,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:51:26,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:51:26,810 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:51:26,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:51:26,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:51:26,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:51:26,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:51:26,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:51:26,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:51:26,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:51:26,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:51:26,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:51:26,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:51:26,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:51:26,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:51:26,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:51:26,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:51:26,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:51:26,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:51:26,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:51:26,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:51:26,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:51:26,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:51:26,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:51:26,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:51:26,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:51:26,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:51:26,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:51:27,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:51:27,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:51:27,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:51:27,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:51:27,134 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:51:27,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-05 22:51:27,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e6e15e49/65252d129faf4a67b6a89a896af1b1c0/FLAGa3649a237 [2020-10-05 22:51:27,788 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:51:27,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-05 22:51:27,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e6e15e49/65252d129faf4a67b6a89a896af1b1c0/FLAGa3649a237 [2020-10-05 22:51:28,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e6e15e49/65252d129faf4a67b6a89a896af1b1c0 [2020-10-05 22:51:28,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:51:28,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:51:28,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:51:28,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:51:28,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:51:28,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f3ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28, skipping insertion in model container [2020-10-05 22:51:28,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:51:28,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:51:28,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:51:28,672 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:51:28,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:51:28,804 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:51:28,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28 WrapperNode [2020-10-05 22:51:28,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:51:28,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:51:28,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:51:28,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:51:28,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:51:28,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:51:28,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:51:28,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:51:28,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... [2020-10-05 22:51:28,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:51:28,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:51:28,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:51:28,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:51:28,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:51:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:51:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:51:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:51:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:51:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:51:28,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:51:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:51:28,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:51:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:51:28,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:51:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:51:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:51:28,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:51:28,970 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:51:29,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:51:29,321 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:51:29,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:51:29 BoogieIcfgContainer [2020-10-05 22:51:29,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:51:29,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:51:29,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:51:29,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:51:29,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:51:28" (1/3) ... [2020-10-05 22:51:29,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84beedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:51:29, skipping insertion in model container [2020-10-05 22:51:29,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:28" (2/3) ... [2020-10-05 22:51:29,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84beedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:51:29, skipping insertion in model container [2020-10-05 22:51:29,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:51:29" (3/3) ... [2020-10-05 22:51:29,333 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-10-05 22:51:29,345 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:51:29,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:51:29,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:51:29,354 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:51:29,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,412 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,412 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,412 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:29,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:51:29,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:51:29,453 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:51:29,453 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:51:29,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:51:29,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:51:29,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:51:29,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:51:29,454 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:51:29,470 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:29,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:29,520 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:51:29,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:51:29,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:51:29,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:29,553 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:51:29,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:51:29,554 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:51:29,556 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:51:29,557 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:51:31,338 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-10-05 22:51:31,338 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-05 22:51:31,342 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:51:31,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:51:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:51:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:51:31,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-05 22:51:31,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222159464] [2020-10-05 22:51:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222159464] [2020-10-05 22:51:31,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:51:31,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007597222] [2020-10-05 22:51:31,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:31,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:31,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:31,623 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:51:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,683 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:51:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:31,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:51:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,703 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:51:31,703 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:51:31,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:51:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:51:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:51:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:51:31,780 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:51:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,781 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:51:31,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:51:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:51:31,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:51:31,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-05 22:51:31,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695922213] [2020-10-05 22:51:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695922213] [2020-10-05 22:51:31,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:31,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57055884] [2020-10-05 22:51:31,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:31,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:31,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:31,850 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-05 22:51:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,871 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-05 22:51:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:31,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 22:51:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,874 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:51:31,874 INFO L226 Difference]: Without dead ends: 202 [2020-10-05 22:51:31,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:31,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-05 22:51:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-05 22:51:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-05 22:51:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-05 22:51:31,893 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-05 22:51:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,894 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-05 22:51:31,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-05 22:51:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:51:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:51:31,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-05 22:51:31,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945337369] [2020-10-05 22:51:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945337369] [2020-10-05 22:51:31,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:51:31,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102565411] [2020-10-05 22:51:31,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:31,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:31,965 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-05 22:51:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,972 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-05 22:51:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:31,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 22:51:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,975 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:51:31,975 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 22:51:31,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 22:51:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-05 22:51:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-05 22:51:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-05 22:51:31,988 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-05 22:51:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,989 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-05 22:51:31,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-05 22:51:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:51:31,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:51:31,992 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-05 22:51:31,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644925353] [2020-10-05 22:51:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644925353] [2020-10-05 22:51:32,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:32,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919892624] [2020-10-05 22:51:32,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:32,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:32,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:32,086 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-05 22:51:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,153 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-05 22:51:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:51:32,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:51:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,158 INFO L225 Difference]: With dead ends: 225 [2020-10-05 22:51:32,158 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:51:32,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:51:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-05 22:51:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-05 22:51:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-05 22:51:32,174 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-05 22:51:32,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,174 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-05 22:51:32,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-05 22:51:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:51:32,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:32,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:32,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:51:32,176 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:32,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-10-05 22:51:32,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:32,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487798600] [2020-10-05 22:51:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487798600] [2020-10-05 22:51:32,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:32,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514121034] [2020-10-05 22:51:32,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:51:32,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:51:32,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:32,225 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-05 22:51:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,273 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-05 22:51:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:51:32,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-05 22:51:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,275 INFO L225 Difference]: With dead ends: 160 [2020-10-05 22:51:32,275 INFO L226 Difference]: Without dead ends: 123 [2020-10-05 22:51:32,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:51:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-05 22:51:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-05 22:51:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 22:51:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-05 22:51:32,281 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-05 22:51:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,281 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-05 22:51:32,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:51:32,281 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-05 22:51:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:51:32,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:32,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:32,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:51:32,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:32,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-05 22:51:32,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:32,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468147850] [2020-10-05 22:51:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468147850] [2020-10-05 22:51:32,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:51:32,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754634686] [2020-10-05 22:51:32,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:51:32,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:51:32,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:51:32,383 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-05 22:51:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,455 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-05 22:51:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:51:32,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-05 22:51:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,456 INFO L225 Difference]: With dead ends: 118 [2020-10-05 22:51:32,456 INFO L226 Difference]: Without dead ends: 108 [2020-10-05 22:51:32,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:51:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-05 22:51:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-05 22:51:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-05 22:51:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-05 22:51:32,462 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-05 22:51:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,462 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-05 22:51:32,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:51:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-05 22:51:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:32,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:32,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:32,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:51:32,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:32,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:32,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-05 22:51:32,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:32,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851485120] [2020-10-05 22:51:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851485120] [2020-10-05 22:51:32,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:32,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395051402] [2020-10-05 22:51:32,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:32,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:32,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:32,547 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-05 22:51:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,563 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-05 22:51:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:32,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,565 INFO L225 Difference]: With dead ends: 133 [2020-10-05 22:51:32,565 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 22:51:32,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 22:51:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-05 22:51:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-05 22:51:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-05 22:51:32,568 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-05 22:51:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,569 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-05 22:51:32,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-05 22:51:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:32,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:32,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:32,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:51:32,570 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:32,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-05 22:51:32,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:32,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851444595] [2020-10-05 22:51:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851444595] [2020-10-05 22:51:32,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:32,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924366388] [2020-10-05 22:51:32,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:32,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:32,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:32,615 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-05 22:51:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,632 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-05 22:51:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:32,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,633 INFO L225 Difference]: With dead ends: 63 [2020-10-05 22:51:32,633 INFO L226 Difference]: Without dead ends: 38 [2020-10-05 22:51:32,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:32,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-05 22:51:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-05 22:51:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-05 22:51:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-05 22:51:32,635 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-05 22:51:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,636 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-05 22:51:32,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-05 22:51:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:32,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:32,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:32,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:51:32,637 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-05 22:51:32,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:32,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026037878] [2020-10-05 22:51:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026037878] [2020-10-05 22:51:32,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:32,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656477939] [2020-10-05 22:51:32,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:32,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:32,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:32,669 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-05 22:51:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,685 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-05 22:51:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:51:32,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,687 INFO L225 Difference]: With dead ends: 56 [2020-10-05 22:51:32,687 INFO L226 Difference]: Without dead ends: 35 [2020-10-05 22:51:32,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-05 22:51:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-05 22:51:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-05 22:51:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-05 22:51:32,689 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-05 22:51:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,689 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-05 22:51:32,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-05 22:51:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:32,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:32,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:32,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:51:32,691 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-05 22:51:32,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:32,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723993054] [2020-10-05 22:51:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:32,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723993054] [2020-10-05 22:51:32,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:32,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:32,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890837013] [2020-10-05 22:51:32,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:32,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:32,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:32,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:32,748 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-05 22:51:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:32,762 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-05 22:51:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:32,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:32,763 INFO L225 Difference]: With dead ends: 34 [2020-10-05 22:51:32,763 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:51:32,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:32,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:51:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:51:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:51:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:51:32,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:51:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:32,765 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:51:32,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:51:32,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:51:32,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:51:32,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:51:32 BasicIcfg [2020-10-05 22:51:32,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:51:32,777 INFO L168 Benchmark]: Toolchain (without parser) took 4732.09 ms. Allocated memory was 140.5 MB in the beginning and 248.5 MB in the end (delta: 108.0 MB). Free memory was 102.3 MB in the beginning and 139.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,778 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.04 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 161.9 MB in the end (delta: -60.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.36 ms. Allocated memory is still 204.5 MB. Free memory was 161.9 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,787 INFO L168 Benchmark]: Boogie Preprocessor took 31.94 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,788 INFO L168 Benchmark]: RCFGBuilder took 434.58 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,793 INFO L168 Benchmark]: TraceAbstraction took 3448.19 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 135.6 MB in the beginning and 139.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:32,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.04 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 161.9 MB in the end (delta: -60.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.36 ms. Allocated memory is still 204.5 MB. Free memory was 161.9 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.94 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.58 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3448.19 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 135.6 MB in the beginning and 139.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...