/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/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:51:16,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:51:16,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:51:16,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:51:16,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:51:16,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:51:16,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:51:16,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:51:16,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:51:16,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:51:16,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:51:16,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:51:16,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:51:16,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:51:16,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:51:16,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:51:16,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:51:16,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:51:16,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:51:16,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:51:16,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:51:16,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:51:16,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:51:16,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:51:16,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 10:51:16,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 10:51:16,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 10:51:16,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 10:51:16,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 10:51:16,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 10:51:16,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 10:51:16,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 10:51:16,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 10:51:16,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 10:51:16,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 10:51:16,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 10:51:16,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 10:51:16,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 10:51:16,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:51:16,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:51:16,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:51:16,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 10:51:16,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:51:16,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:51:16,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:51:16,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:51:16,508 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:51:16,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:51:16,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:51:16,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:51:16,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:51:16,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:51:16,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:51:16,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:51:16,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:51:16,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:51:16,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:51:16,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:51:16,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:51:16,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:51:16,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:51:16,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:51:16,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:51:16,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:51:16,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:51:16,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:51:16,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:51:16,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:51:16,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:51:16,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:51:16,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:51:16,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:51:16,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:51:16,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:51:16,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:51:16,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:51:16,906 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:51:16,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2020-10-16 10:51:16,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77e179840/5f913bdca51c4a21b310908f8a7196dc/FLAG2b4d91161 [2020-10-16 10:51:17,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:51:17,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/sync01.i [2020-10-16 10:51:17,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77e179840/5f913bdca51c4a21b310908f8a7196dc/FLAG2b4d91161 [2020-10-16 10:51:17,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77e179840/5f913bdca51c4a21b310908f8a7196dc [2020-10-16 10:51:17,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:51:17,759 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:51:17,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:51:17,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:51:17,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:51:17,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:17" (1/1) ... [2020-10-16 10:51:17,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b05ae09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:17, skipping insertion in model container [2020-10-16 10:51:17,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:51:17" (1/1) ... [2020-10-16 10:51:17,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:51:17,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:51:18,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:51:18,397 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:51:18,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:51:18,631 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:51:18,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18 WrapperNode [2020-10-16 10:51:18,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:51:18,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:51:18,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:51:18,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:51:18,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:51:18,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:51:18,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:51:18,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:51:18,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... [2020-10-16 10:51:18,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:51:18,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:51:18,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:51:18,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:51:18,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:51:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:51:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:51:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 10:51:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-16 10:51:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-16 10:51:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-16 10:51:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-16 10:51:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:51:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 10:51:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 10:51:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:51:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:51:18,819 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:51:19,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:51:19,256 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 10:51:19,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:19 BoogieIcfgContainer [2020-10-16 10:51:19,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:51:19,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:51:19,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:51:19,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:51:19,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:51:17" (1/3) ... [2020-10-16 10:51:19,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28766d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:19, skipping insertion in model container [2020-10-16 10:51:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:51:18" (2/3) ... [2020-10-16 10:51:19,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28766d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:51:19, skipping insertion in model container [2020-10-16 10:51:19,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:51:19" (3/3) ... [2020-10-16 10:51:19,267 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2020-10-16 10:51:19,280 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:51:19,280 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:51:19,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 10:51:19,290 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:51:19,320 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,321 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,321 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,325 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,325 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,326 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,326 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,326 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,327 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,328 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,333 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,333 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,345 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,345 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,345 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,345 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,346 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,346 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:51:19,355 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 10:51:19,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 10:51:19,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:51:19,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:51:19,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:51:19,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:51:19,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:51:19,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:51:19,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:51:19,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:51:19,407 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:51:19,410 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 204 flow [2020-10-16 10:51:19,413 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 204 flow [2020-10-16 10:51:19,415 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 204 flow [2020-10-16 10:51:19,487 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2020-10-16 10:51:19,488 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 10:51:19,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 91 events. 6/91 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2020-10-16 10:51:19,497 INFO L117 LiptonReduction]: Number of co-enabled transitions 840 [2020-10-16 10:51:21,354 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-16 10:51:21,483 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-16 10:51:21,673 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-16 10:51:22,466 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2020-10-16 10:51:22,739 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-16 10:51:22,750 INFO L132 LiptonReduction]: Checked pairs total: 3301 [2020-10-16 10:51:22,751 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-16 10:51:22,757 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 34 transitions, 90 flow [2020-10-16 10:51:22,776 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-10-16 10:51:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-10-16 10:51:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 10:51:22,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:22,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:22,792 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:22,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:22,798 INFO L82 PathProgramCache]: Analyzing trace with hash -495198352, now seen corresponding path program 1 times [2020-10-16 10:51:22,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:22,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797984731] [2020-10-16 10:51:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:22,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797984731] [2020-10-16 10:51:22,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:22,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:22,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395045536] [2020-10-16 10:51:23,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 10:51:23,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:23,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 10:51:23,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:51:23,021 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2020-10-16 10:51:23,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:23,047 INFO L93 Difference]: Finished difference Result 198 states and 455 transitions. [2020-10-16 10:51:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 10:51:23,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-16 10:51:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:23,063 INFO L225 Difference]: With dead ends: 198 [2020-10-16 10:51:23,064 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 10:51:23,065 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 [2020-10-16 10:51:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 10:51:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-16 10:51:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-16 10:51:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 454 transitions. [2020-10-16 10:51:23,126 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 454 transitions. Word has length 15 [2020-10-16 10:51:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:23,127 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 454 transitions. [2020-10-16 10:51:23,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 10:51:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 454 transitions. [2020-10-16 10:51:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 10:51:23,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:23,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:23,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:51:23,131 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:23,132 INFO L82 PathProgramCache]: Analyzing trace with hash 279879984, now seen corresponding path program 1 times [2020-10-16 10:51:23,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:23,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474773839] [2020-10-16 10:51:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:23,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474773839] [2020-10-16 10:51:23,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:23,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:51:23,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690326421] [2020-10-16 10:51:23,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:51:23,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:23,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:51:23,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:51:23,250 INFO L87 Difference]: Start difference. First operand 197 states and 454 transitions. Second operand 3 states. [2020-10-16 10:51:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:23,299 INFO L93 Difference]: Finished difference Result 107 states and 223 transitions. [2020-10-16 10:51:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:51:23,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-16 10:51:23,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:23,301 INFO L225 Difference]: With dead ends: 107 [2020-10-16 10:51:23,301 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 10:51:23,302 INFO L677 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 [2020-10-16 10:51:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 10:51:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-16 10:51:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-16 10:51:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 223 transitions. [2020-10-16 10:51:23,312 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 223 transitions. Word has length 21 [2020-10-16 10:51:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:23,313 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 223 transitions. [2020-10-16 10:51:23,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:51:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 223 transitions. [2020-10-16 10:51:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 10:51:23,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:23,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:23,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:51:23,315 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:23,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1077149356, now seen corresponding path program 2 times [2020-10-16 10:51:23,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:23,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874013970] [2020-10-16 10:51:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:23,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874013970] [2020-10-16 10:51:23,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:23,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:51:23,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950603802] [2020-10-16 10:51:23,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 10:51:23,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 10:51:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 10:51:23,398 INFO L87 Difference]: Start difference. First operand 107 states and 223 transitions. Second operand 5 states. [2020-10-16 10:51:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:23,474 INFO L93 Difference]: Finished difference Result 80 states and 137 transitions. [2020-10-16 10:51:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 10:51:23,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 10:51:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:23,476 INFO L225 Difference]: With dead ends: 80 [2020-10-16 10:51:23,476 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 10:51:23,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 10:51:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 10:51:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 10:51:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 10:51:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 137 transitions. [2020-10-16 10:51:23,483 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 137 transitions. Word has length 21 [2020-10-16 10:51:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:23,483 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 137 transitions. [2020-10-16 10:51:23,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 10:51:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 137 transitions. [2020-10-16 10:51:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 10:51:23,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:23,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:23,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:51:23,488 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:23,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:23,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2113878624, now seen corresponding path program 3 times [2020-10-16 10:51:23,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:23,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830840207] [2020-10-16 10:51:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:23,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830840207] [2020-10-16 10:51:23,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:23,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 10:51:23,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421480313] [2020-10-16 10:51:23,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 10:51:23,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:23,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 10:51:23,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-16 10:51:23,625 INFO L87 Difference]: Start difference. First operand 80 states and 137 transitions. Second operand 7 states. [2020-10-16 10:51:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:23,714 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2020-10-16 10:51:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:51:23,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-16 10:51:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:23,715 INFO L225 Difference]: With dead ends: 80 [2020-10-16 10:51:23,715 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 10:51:23,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 10:51:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 10:51:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-16 10:51:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-16 10:51:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-10-16 10:51:23,720 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 21 [2020-10-16 10:51:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:23,720 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-10-16 10:51:23,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 10:51:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-10-16 10:51:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 10:51:23,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:23,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:23,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:51:23,722 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1774524060, now seen corresponding path program 1 times [2020-10-16 10:51:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:23,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243858406] [2020-10-16 10:51:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:23,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243858406] [2020-10-16 10:51:23,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:51:23,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 10:51:23,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168233444] [2020-10-16 10:51:23,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 10:51:23,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:23,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 10:51:23,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-16 10:51:23,820 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 7 states. [2020-10-16 10:51:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:23,911 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2020-10-16 10:51:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:51:23,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-16 10:51:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:23,912 INFO L225 Difference]: With dead ends: 53 [2020-10-16 10:51:23,912 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 10:51:23,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:51:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 10:51:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 10:51:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 10:51:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 10:51:23,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-16 10:51:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 10:51:23,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 10:51:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 10:51:23,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 10:51:23,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 10:51:23,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:51:23 BasicIcfg [2020-10-16 10:51:23,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:51:23,920 INFO L168 Benchmark]: Toolchain (without parser) took 6161.38 ms. Allocated memory was 148.4 MB in the beginning and 274.2 MB in the end (delta: 125.8 MB). Free memory was 103.0 MB in the beginning and 106.9 MB in the end (delta: -4.0 MB). Peak memory consumption was 121.9 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,921 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 872.52 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.5 MB in the beginning and 140.7 MB in the end (delta: -38.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 204.5 MB. Free memory was 140.7 MB in the beginning and 138.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,924 INFO L168 Benchmark]: Boogie Preprocessor took 34.87 ms. Allocated memory is still 204.5 MB. Free memory was 138.1 MB in the beginning and 136.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,925 INFO L168 Benchmark]: RCFGBuilder took 525.78 ms. Allocated memory is still 204.5 MB. Free memory was 136.8 MB in the beginning and 110.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,925 INFO L168 Benchmark]: TraceAbstraction took 4658.88 ms. Allocated memory was 204.5 MB in the beginning and 274.2 MB in the end (delta: 69.7 MB). Free memory was 109.6 MB in the beginning and 106.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:23,930 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 872.52 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.5 MB in the beginning and 140.7 MB in the end (delta: -38.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 204.5 MB. Free memory was 140.7 MB in the beginning and 138.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.87 ms. Allocated memory is still 204.5 MB. Free memory was 138.1 MB in the beginning and 136.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 525.78 ms. Allocated memory is still 204.5 MB. Free memory was 136.8 MB in the beginning and 110.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4658.88 ms. Allocated memory was 204.5 MB in the beginning and 274.2 MB in the end (delta: 69.7 MB). Free memory was 109.6 MB in the beginning and 106.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 630 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 24 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 222 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 91 PlacesBefore, 35 PlacesAfterwards, 91 TransitionsBefore, 34 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 3301 MoverChecksTotal - PositiveResult [Line: 947]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 130 SDtfs, 112 SDslu, 159 SDs, 0 SdLazy, 121 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5876 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...