/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:16:22,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:16:22,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:16:22,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:16:22,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:16:22,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:16:22,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:16:22,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:16:22,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:16:22,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:16:22,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:16:22,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:16:22,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:16:22,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:16:22,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:16:22,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:16:22,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:16:22,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:16:22,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:16:22,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:16:22,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:16:22,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:16:22,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:16:22,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:16:22,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:16:22,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:16:22,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:16:22,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:16:22,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:16:22,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:16:22,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:16:22,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:16:22,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:16:22,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:16:22,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:16:22,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:16:22,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:16:22,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:16:22,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:16:22,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:16:22,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:16:22,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:16:22,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:16:22,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:16:22,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:16:22,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:16:22,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:16:22,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:16:22,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:16:22,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:16:22,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:16:22,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:16:22,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:16:22,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:16:22,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:16:22,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:16:22,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:16:22,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:16:22,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:16:22,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:16:22,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:16:22,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:16:22,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:16:22,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:16:22,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:16:22,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:16:22,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:16:22,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:16:22,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:16:22,991 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:16:22,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:16:22,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:16:22,991 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:16:23,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:16:23,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:16:23,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:16:23,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:16:23,352 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:16:23,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-10-22 02:16:23,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0179ccb3c/44d31f2141fc49a29bebeb64735d7666/FLAG590ddd80b [2020-10-22 02:16:23,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:16:23,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-10-22 02:16:23,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0179ccb3c/44d31f2141fc49a29bebeb64735d7666/FLAG590ddd80b [2020-10-22 02:16:24,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0179ccb3c/44d31f2141fc49a29bebeb64735d7666 [2020-10-22 02:16:24,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:16:24,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:16:24,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:16:24,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:16:24,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:16:24,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:16:24" (1/1) ... [2020-10-22 02:16:24,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e7e8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:24, skipping insertion in model container [2020-10-22 02:16:24,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:16:24" (1/1) ... [2020-10-22 02:16:24,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:16:24,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:16:24,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:16:24,901 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:16:24,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:16:25,049 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:16:25,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25 WrapperNode [2020-10-22 02:16:25,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:16:25,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:16:25,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:16:25,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:16:25,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:16:25,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:16:25,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:16:25,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:16:25,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (1/1) ... [2020-10-22 02:16:25,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:16:25,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:16:25,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:16:25,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:16:25,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (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 [2020-10-22 02:16:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:16:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:16:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:16:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:16:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:16:25,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:16:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:16:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:16:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:16:25,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:16:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:16:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:16:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:16:25,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:16:25,220 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:16:25,631 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:16:25,631 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:16:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:16:25 BoogieIcfgContainer [2020-10-22 02:16:25,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:16:25,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:16:25,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:16:25,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:16:25,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:16:24" (1/3) ... [2020-10-22 02:16:25,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b7f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:16:25, skipping insertion in model container [2020-10-22 02:16:25,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:25" (2/3) ... [2020-10-22 02:16:25,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b7f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:16:25, skipping insertion in model container [2020-10-22 02:16:25,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:16:25" (3/3) ... [2020-10-22 02:16:25,644 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-10-22 02:16:25,656 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:16:25,656 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:16:25,665 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:16:25,666 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:16:25,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,696 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,706 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,706 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,714 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:25,727 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:16:25,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:16:25,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:16:25,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:16:25,765 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:16:25,766 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:16:25,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:16:25,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:16:25,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:16:25,767 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:16:25,787 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:16:25,788 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:16:25,791 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:16:25,793 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 02:16:25,842 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 02:16:25,843 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:16:25,851 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-22 02:16:25,854 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-22 02:16:27,128 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-22 02:16:27,389 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-22 02:16:27,681 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-22 02:16:27,682 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 02:16:27,690 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 02:16:27,731 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-22 02:16:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-22 02:16:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:16:27,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:27,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:27,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-22 02:16:27,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:27,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728177005] [2020-10-22 02:16:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:27,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728177005] [2020-10-22 02:16:27,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:27,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:16:27,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1503831891] [2020-10-22 02:16:27,948 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:27,951 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:27,964 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:16:27,965 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:27,968 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:27,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:16:27,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:27,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:16:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:16:27,987 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-22 02:16:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:28,010 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-22 02:16:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:16:28,015 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 02:16:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:28,034 INFO L225 Difference]: With dead ends: 274 [2020-10-22 02:16:28,034 INFO L226 Difference]: Without dead ends: 226 [2020-10-22 02:16:28,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:16:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-22 02:16:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-22 02:16:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-22 02:16:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-22 02:16:28,104 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-22 02:16:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:28,105 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-22 02:16:28,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:16:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-22 02:16:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:16:28,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:28,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:28,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:16:28,108 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-22 02:16:28,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:28,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581244976] [2020-10-22 02:16:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:28,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581244976] [2020-10-22 02:16:28,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:28,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:16:28,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1679699938] [2020-10-22 02:16:28,240 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:28,241 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:28,242 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:16:28,243 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:28,243 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:28,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:16:28,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:16:28,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:16:28,246 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-22 02:16:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:28,298 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-22 02:16:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:28,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:16:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:28,302 INFO L225 Difference]: With dead ends: 250 [2020-10-22 02:16:28,302 INFO L226 Difference]: Without dead ends: 202 [2020-10-22 02:16:28,303 INFO L677 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 [2020-10-22 02:16:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-22 02:16:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-22 02:16:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-22 02:16:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-22 02:16:28,327 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-22 02:16:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:28,327 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-22 02:16:28,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:16:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-22 02:16:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:16:28,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:28,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:28,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:16:28,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:28,330 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-22 02:16:28,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:28,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628438759] [2020-10-22 02:16:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:28,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628438759] [2020-10-22 02:16:28,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:28,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:28,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [681246494] [2020-10-22 02:16:28,439 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:28,440 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:28,442 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-22 02:16:28,442 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:28,527 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:28,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:28,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:28,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:28,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:28,528 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-22 02:16:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:28,581 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-22 02:16:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:16:28,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-22 02:16:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:28,583 INFO L225 Difference]: With dead ends: 238 [2020-10-22 02:16:28,583 INFO L226 Difference]: Without dead ends: 106 [2020-10-22 02:16:28,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-22 02:16:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-22 02:16:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-22 02:16:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-22 02:16:28,594 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-22 02:16:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:28,594 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-22 02:16:28,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-22 02:16:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:16:28,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:28,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:28,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:16:28,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:28,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:28,597 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-22 02:16:28,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:28,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965516870] [2020-10-22 02:16:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:28,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965516870] [2020-10-22 02:16:28,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:28,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:28,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1453067785] [2020-10-22 02:16:28,700 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:28,702 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:28,703 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-10-22 02:16:28,703 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:28,720 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:28,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:28,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:28,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:28,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:28,722 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-22 02:16:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:28,778 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-22 02:16:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:16:28,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:16:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:28,780 INFO L225 Difference]: With dead ends: 148 [2020-10-22 02:16:28,780 INFO L226 Difference]: Without dead ends: 76 [2020-10-22 02:16:28,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-22 02:16:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-22 02:16:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-22 02:16:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-22 02:16:28,787 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-22 02:16:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:28,787 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-22 02:16:28,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-22 02:16:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:16:28,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:28,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:28,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:16:28,789 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-22 02:16:28,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:28,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643331194] [2020-10-22 02:16:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:28,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643331194] [2020-10-22 02:16:28,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:28,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:28,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2056922996] [2020-10-22 02:16:28,877 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:28,878 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:28,881 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 02:16:28,881 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:28,950 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:28,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:16:28,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:28,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:16:28,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:16:28,951 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-22 02:16:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:28,987 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-22 02:16:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:28,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 02:16:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:28,990 INFO L225 Difference]: With dead ends: 87 [2020-10-22 02:16:28,990 INFO L226 Difference]: Without dead ends: 66 [2020-10-22 02:16:28,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-22 02:16:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-22 02:16:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-22 02:16:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-22 02:16:29,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-22 02:16:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:29,004 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-22 02:16:29,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:16:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-22 02:16:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:16:29,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:29,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:29,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:16:29,006 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-22 02:16:29,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:29,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322501769] [2020-10-22 02:16:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:29,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322501769] [2020-10-22 02:16:29,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:29,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:16:29,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1472436254] [2020-10-22 02:16:29,120 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:29,122 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:29,126 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-22 02:16:29,127 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:29,190 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3026#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:16:29,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:16:29,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:16:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:16:29,191 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 6 states. [2020-10-22 02:16:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:29,250 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-22 02:16:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:16:29,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-22 02:16:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:29,252 INFO L225 Difference]: With dead ends: 62 [2020-10-22 02:16:29,252 INFO L226 Difference]: Without dead ends: 47 [2020-10-22 02:16:29,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:29,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-22 02:16:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-22 02:16:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-22 02:16:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-22 02:16:29,257 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-22 02:16:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:29,257 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-22 02:16:29,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:16:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-22 02:16:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:16:29,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:29,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:29,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:16:29,261 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:29,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-22 02:16:29,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:29,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035213969] [2020-10-22 02:16:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:29,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035213969] [2020-10-22 02:16:29,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:29,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 02:16:29,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1012558038] [2020-10-22 02:16:29,330 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:29,331 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:29,334 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-22 02:16:29,335 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:29,415 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3191#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:16:29,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 02:16:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:29,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 02:16:29,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:29,416 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-10-22 02:16:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:29,499 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-22 02:16:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:16:29,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-22 02:16:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:29,500 INFO L225 Difference]: With dead ends: 40 [2020-10-22 02:16:29,500 INFO L226 Difference]: Without dead ends: 34 [2020-10-22 02:16:29,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-22 02:16:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-22 02:16:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-22 02:16:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-22 02:16:29,503 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-22 02:16:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:29,504 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-22 02:16:29,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 02:16:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-22 02:16:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:16:29,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:29,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:29,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:16:29,506 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:29,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-22 02:16:29,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:29,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213911069] [2020-10-22 02:16:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:29,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213911069] [2020-10-22 02:16:29,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:29,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:16:29,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2040374956] [2020-10-22 02:16:29,560 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:29,562 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:29,566 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-10-22 02:16:29,566 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:29,602 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:29,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:29,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:29,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:29,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:29,603 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-10-22 02:16:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:29,630 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-10-22 02:16:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:29,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 02:16:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:29,631 INFO L225 Difference]: With dead ends: 33 [2020-10-22 02:16:29,631 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:16:29,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:16:29,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:16:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:16:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:16:29,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 02:16:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:29,633 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:16:29,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:16:29,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:16:29,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:16:29,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:16:29 BasicIcfg [2020-10-22 02:16:29,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:16:29,641 INFO L168 Benchmark]: Toolchain (without parser) took 5386.95 ms. Allocated memory was 140.0 MB in the beginning and 282.1 MB in the end (delta: 142.1 MB). Free memory was 101.2 MB in the beginning and 221.5 MB in the end (delta: -120.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:29,642 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 02:16:29,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.94 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 156.6 MB in the end (delta: -56.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:29,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.62 ms. Allocated memory is still 202.4 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:29,645 INFO L168 Benchmark]: Boogie Preprocessor took 30.11 ms. Allocated memory is still 202.4 MB. Free memory was 153.9 MB in the beginning and 152.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:29,646 INFO L168 Benchmark]: RCFGBuilder took 501.77 ms. Allocated memory is still 202.4 MB. Free memory was 152.6 MB in the beginning and 128.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:29,647 INFO L168 Benchmark]: TraceAbstraction took 4002.90 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 127.6 MB in the beginning and 221.5 MB in the end (delta: -93.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:16:29,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.94 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 156.6 MB in the end (delta: -56.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.62 ms. Allocated memory is still 202.4 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.11 ms. Allocated memory is still 202.4 MB. Free memory was 153.9 MB in the beginning and 152.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.77 ms. Allocated memory is still 202.4 MB. Free memory was 152.6 MB in the beginning and 128.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4002.90 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 127.6 MB in the beginning and 221.5 MB in the end (delta: -93.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 737 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 46 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 149 SDtfs, 153 SDslu, 228 SDs, 0 SdLazy, 120 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...