/usr/bin/java -Xmx16000000000 -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/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:07:40,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:07:40,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:07:40,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:07:40,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:07:40,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:07:40,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:07:40,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:07:40,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:07:40,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:07:40,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:07:40,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:07:40,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:07:40,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:07:40,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:07:40,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:07:40,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:07:40,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:07:40,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:07:40,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:07:40,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:07:40,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:07:40,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:07:40,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:07:40,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:07:40,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:07:40,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:07:40,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:07:40,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:07:40,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:07:40,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:07:40,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:07:40,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:07:40,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:07:40,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:07:40,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:07:40,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:07:40,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:07:40,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:07:40,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:07:40,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:07:40,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:07:40,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:07:40,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:07:40,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:07:40,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:07:40,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:07:40,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:07:40,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:07:40,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:07:40,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:07:40,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:07:40,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:07:40,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:07:40,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:07:40,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:07:40,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:07:40,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:07:40,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:07:40,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:07:40,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:07:40,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:07:40,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:07:40,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:07:40,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:07:40,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:07:40,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:07:40,506 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:07:40,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:07:40,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:07:40,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:07:40,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:07:40,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:07:40,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:07:40,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:07:40,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:07:40,792 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:07:40,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-10-09 18:07:40,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aeb8a52/06066d17a8e24e96a9a345cf8b8d5ef8/FLAG4d2da1b83 [2020-10-09 18:07:41,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:07:41,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-10-09 18:07:41,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aeb8a52/06066d17a8e24e96a9a345cf8b8d5ef8/FLAG4d2da1b83 [2020-10-09 18:07:41,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5aeb8a52/06066d17a8e24e96a9a345cf8b8d5ef8 [2020-10-09 18:07:41,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:07:41,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:07:41,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:07:41,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:07:41,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:07:41,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:07:41" (1/1) ... [2020-10-09 18:07:41,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bab4864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:41, skipping insertion in model container [2020-10-09 18:07:41,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:07:41" (1/1) ... [2020-10-09 18:07:41,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:07:41,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:07:41,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:07:41,984 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:07:42,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:07:42,252 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:07:42,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42 WrapperNode [2020-10-09 18:07:42,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:07:42,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:07:42,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:07:42,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:07:42,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:07:42,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:07:42,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:07:42,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:07:42,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (1/1) ... [2020-10-09 18:07:42,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:07:42,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:07:42,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:07:42,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:07:42,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (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 [2020-10-09 18:07:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:07:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:07:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:07:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:07:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:07:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:07:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:07:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:07:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:07:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:07:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:07:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:07:42,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:07:42,411 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:07:42,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:07:42,774 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:07:42,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:07:42 BoogieIcfgContainer [2020-10-09 18:07:42,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:07:42,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:07:42,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:07:42,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:07:42,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:07:41" (1/3) ... [2020-10-09 18:07:42,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46728ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:07:42, skipping insertion in model container [2020-10-09 18:07:42,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:07:42" (2/3) ... [2020-10-09 18:07:42,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46728ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:07:42, skipping insertion in model container [2020-10-09 18:07:42,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:07:42" (3/3) ... [2020-10-09 18:07:42,785 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-10-09 18:07:42,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:07:42,803 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:07:42,803 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:07:42,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,830 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,830 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,833 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,833 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,838 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,843 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,843 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,843 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,845 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,846 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,846 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:07:42,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 18:07:42,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:07:42,884 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:07:42,884 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:07:42,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:07:42,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:07:42,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:07:42,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:07:42,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:07:42,903 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 18:07:42,944 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-09 18:07:42,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:07:42,949 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 18:07:42,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 18:07:42,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-09 18:07:42,977 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-09 18:07:42,978 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:07:42,978 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:07:42,979 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:07:42,980 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:07:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:07:42,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1548204118, now seen corresponding path program 1 times [2020-10-09 18:07:42,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:07:43,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478686481] [2020-10-09 18:07:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:07:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:07:43,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:07:43,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:07:43,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:07:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:43,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:07:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:43,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478686481] [2020-10-09 18:07:43,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:07:43,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:07:43,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049020518] [2020-10-09 18:07:43,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:07:43,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:07:43,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:07:43,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:07:43,569 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-09 18:07:43,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 8 states. [2020-10-09 18:07:43,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:07:43,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-09 18:07:43,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:07:43,748 INFO L129 PetriNetUnfolder]: 18/144 cut-off events. [2020-10-09 18:07:43,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:07:43,750 INFO L80 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 144 events. 18/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 534 event pairs, 0 based on Foata normal form. 8/149 useless extension candidates. Maximal degree in co-relation 189. Up to 15 conditions per place. [2020-10-09 18:07:43,752 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 10 selfloop transitions, 5 changer transitions 24/84 dead transitions. [2020-10-09 18:07:43,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 253 flow [2020-10-09 18:07:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 18:07:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 18:07:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 811 transitions. [2020-10-09 18:07:43,775 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8912087912087913 [2020-10-09 18:07:43,776 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 811 transitions. [2020-10-09 18:07:43,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 811 transitions. [2020-10-09 18:07:43,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:07:43,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 811 transitions. [2020-10-09 18:07:43,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 18:07:43,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 18:07:43,797 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 18:07:43,799 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 13 states and 811 transitions. [2020-10-09 18:07:43,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 253 flow [2020-10-09 18:07:43,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 250 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 18:07:43,809 INFO L241 Difference]: Finished difference. Result has 85 places, 56 transitions, 156 flow [2020-10-09 18:07:43,812 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=156, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2020-10-09 18:07:43,812 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-09 18:07:43,813 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 156 flow [2020-10-09 18:07:43,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:07:43,813 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:07:43,813 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:07:44,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:07:44,035 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:07:44,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:07:44,036 INFO L82 PathProgramCache]: Analyzing trace with hash 819426775, now seen corresponding path program 1 times [2020-10-09 18:07:44,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:07:44,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308376273] [2020-10-09 18:07:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:07:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:07:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 18:07:44,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:07:44,117 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:07:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:44,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:07:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:44,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308376273] [2020-10-09 18:07:44,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:07:44,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:07:44,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658172140] [2020-10-09 18:07:44,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:07:44,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:07:44,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:07:44,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:07:44,267 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 18:07:44,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 156 flow. Second operand 8 states. [2020-10-09 18:07:44,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:07:44,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 18:07:44,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:07:44,519 INFO L129 PetriNetUnfolder]: 124/346 cut-off events. [2020-10-09 18:07:44,519 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2020-10-09 18:07:44,522 INFO L80 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 346 events. 124/346 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1827 event pairs, 0 based on Foata normal form. 14/343 useless extension candidates. Maximal degree in co-relation 631. Up to 72 conditions per place. [2020-10-09 18:07:44,523 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 29/94 dead transitions. [2020-10-09 18:07:44,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 328 flow [2020-10-09 18:07:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 18:07:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 18:07:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 735 transitions. [2020-10-09 18:07:44,527 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.875 [2020-10-09 18:07:44,527 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 735 transitions. [2020-10-09 18:07:44,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 735 transitions. [2020-10-09 18:07:44,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:07:44,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 735 transitions. [2020-10-09 18:07:44,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 18:07:44,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 18:07:44,531 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 18:07:44,531 INFO L185 Difference]: Start difference. First operand has 85 places, 56 transitions, 156 flow. Second operand 12 states and 735 transitions. [2020-10-09 18:07:44,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 328 flow [2020-10-09 18:07:44,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 94 transitions, 305 flow, removed 10 selfloop flow, removed 10 redundant places. [2020-10-09 18:07:44,537 INFO L241 Difference]: Finished difference. Result has 85 places, 62 transitions, 231 flow [2020-10-09 18:07:44,537 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=231, PETRI_PLACES=85, PETRI_TRANSITIONS=62} [2020-10-09 18:07:44,538 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-09 18:07:44,538 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 62 transitions, 231 flow [2020-10-09 18:07:44,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:07:44,538 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:07:44,538 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:07:44,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:07:44,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:07:44,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:07:44,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1513517290, now seen corresponding path program 1 times [2020-10-09 18:07:44,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:07:44,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023645334] [2020-10-09 18:07:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:07:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:07:44,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:07:44,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:07:44,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:07:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:44,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:07:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:44,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023645334] [2020-10-09 18:07:44,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:07:44,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:07:44,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940982673] [2020-10-09 18:07:44,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:07:44,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:07:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:07:44,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:07:45,144 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-09 18:07:45,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 231 flow. Second operand 9 states. [2020-10-09 18:07:45,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:07:45,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-09 18:07:45,145 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:07:45,263 INFO L129 PetriNetUnfolder]: 65/355 cut-off events. [2020-10-09 18:07:45,263 INFO L130 PetriNetUnfolder]: For 829/859 co-relation queries the response was YES. [2020-10-09 18:07:45,265 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 355 events. 65/355 cut-off events. For 829/859 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2035 event pairs, 12 based on Foata normal form. 10/352 useless extension candidates. Maximal degree in co-relation 1002. Up to 96 conditions per place. [2020-10-09 18:07:45,267 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 18 selfloop transitions, 2 changer transitions 4/76 dead transitions. [2020-10-09 18:07:45,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 311 flow [2020-10-09 18:07:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:07:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:07:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 431 transitions. [2020-10-09 18:07:45,269 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8795918367346939 [2020-10-09 18:07:45,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 431 transitions. [2020-10-09 18:07:45,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 431 transitions. [2020-10-09 18:07:45,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:07:45,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 431 transitions. [2020-10-09 18:07:45,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:07:45,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:07:45,273 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:07:45,273 INFO L185 Difference]: Start difference. First operand has 85 places, 62 transitions, 231 flow. Second operand 7 states and 431 transitions. [2020-10-09 18:07:45,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 311 flow [2020-10-09 18:07:45,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 281 flow, removed 11 selfloop flow, removed 7 redundant places. [2020-10-09 18:07:45,280 INFO L241 Difference]: Finished difference. Result has 83 places, 63 transitions, 220 flow [2020-10-09 18:07:45,280 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2020-10-09 18:07:45,280 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2020-10-09 18:07:45,280 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 220 flow [2020-10-09 18:07:45,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:07:45,281 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:07:45,281 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:07:45,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:07:45,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:07:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:07:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash 501093432, now seen corresponding path program 2 times [2020-10-09 18:07:45,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:07:45,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368432144] [2020-10-09 18:07:45,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:07:45,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 18:07:45,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 18:07:45,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 18:07:45,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:07:45,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:07:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:45,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:07:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:45,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368432144] [2020-10-09 18:07:45,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:07:45,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 18:07:45,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557439770] [2020-10-09 18:07:45,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 18:07:45,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:07:45,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 18:07:45,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 18:07:45,808 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 18:07:45,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 220 flow. Second operand 10 states. [2020-10-09 18:07:45,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:07:45,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 18:07:45,810 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:07:46,036 INFO L129 PetriNetUnfolder]: 64/280 cut-off events. [2020-10-09 18:07:46,037 INFO L130 PetriNetUnfolder]: For 536/656 co-relation queries the response was YES. [2020-10-09 18:07:46,039 INFO L80 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 280 events. 64/280 cut-off events. For 536/656 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1503 event pairs, 0 based on Foata normal form. 48/319 useless extension candidates. Maximal degree in co-relation 849. Up to 105 conditions per place. [2020-10-09 18:07:46,041 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 16/76 dead transitions. [2020-10-09 18:07:46,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 365 flow [2020-10-09 18:07:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 18:07:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 18:07:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-09 18:07:46,045 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-09 18:07:46,045 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-09 18:07:46,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-09 18:07:46,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:07:46,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-09 18:07:46,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 18:07:46,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 18:07:46,051 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 18:07:46,051 INFO L185 Difference]: Start difference. First operand has 83 places, 63 transitions, 220 flow. Second operand 11 states and 658 transitions. [2020-10-09 18:07:46,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 365 flow [2020-10-09 18:07:46,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 340 flow, removed 12 selfloop flow, removed 4 redundant places. [2020-10-09 18:07:46,057 INFO L241 Difference]: Finished difference. Result has 92 places, 60 transitions, 238 flow [2020-10-09 18:07:46,057 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=60} [2020-10-09 18:07:46,058 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 27 predicate places. [2020-10-09 18:07:46,058 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 60 transitions, 238 flow [2020-10-09 18:07:46,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 18:07:46,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:07:46,059 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:07:46,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:07:46,273 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:07:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:07:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash 554236214, now seen corresponding path program 1 times [2020-10-09 18:07:46,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:07:46,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739106902] [2020-10-09 18:07:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 18:07:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:07:46,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:07:46,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:07:46,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:07:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:46,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:07:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:07:46,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739106902] [2020-10-09 18:07:46,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:07:46,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:07:46,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802099849] [2020-10-09 18:07:46,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:07:46,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:07:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:07:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:07:46,675 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-09 18:07:46,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 60 transitions, 238 flow. Second operand 9 states. [2020-10-09 18:07:46,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:07:46,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-09 18:07:46,679 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:07:46,732 INFO L129 PetriNetUnfolder]: 7/92 cut-off events. [2020-10-09 18:07:46,732 INFO L130 PetriNetUnfolder]: For 80/86 co-relation queries the response was YES. [2020-10-09 18:07:46,733 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 92 events. 7/92 cut-off events. For 80/86 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 200 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 190. Up to 15 conditions per place. [2020-10-09 18:07:46,733 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-09 18:07:46,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 59 transitions, 256 flow [2020-10-09 18:07:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:07:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:07:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-09 18:07:46,735 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-09 18:07:46,735 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-09 18:07:46,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-09 18:07:46,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:07:46,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-09 18:07:46,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:07:46,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:07:46,740 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:07:46,740 INFO L185 Difference]: Start difference. First operand has 92 places, 60 transitions, 238 flow. Second operand 7 states and 417 transitions. [2020-10-09 18:07:46,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 59 transitions, 256 flow [2020-10-09 18:07:46,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 170 flow, removed 21 selfloop flow, removed 19 redundant places. [2020-10-09 18:07:46,745 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2020-10-09 18:07:46,745 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2020-10-09 18:07:46,745 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2020-10-09 18:07:46,746 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2020-10-09 18:07:46,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:07:46,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:07:46,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:07:46 BasicIcfg [2020-10-09 18:07:46,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:07:46,967 INFO L168 Benchmark]: Toolchain (without parser) took 5373.70 ms. Allocated memory was 247.5 MB in the beginning and 427.3 MB in the end (delta: 179.8 MB). Free memory was 203.8 MB in the beginning and 366.0 MB in the end (delta: -162.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.2 GB. [2020-10-09 18:07:46,968 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 247.5 MB. Free memory was 225.5 MB in the beginning and 224.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 18:07:46,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.50 ms. Allocated memory was 247.5 MB in the beginning and 304.1 MB in the end (delta: 56.6 MB). Free memory was 203.8 MB in the beginning and 260.0 MB in the end (delta: -56.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 14.2 GB. [2020-10-09 18:07:46,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.28 ms. Allocated memory is still 304.1 MB. Free memory was 260.0 MB in the beginning and 257.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-09 18:07:46,970 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 304.1 MB. Free memory was 257.4 MB in the beginning and 255.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 18:07:46,971 INFO L168 Benchmark]: RCFGBuilder took 429.90 ms. Allocated memory is still 304.1 MB. Free memory was 255.7 MB in the beginning and 233.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:07:46,972 INFO L168 Benchmark]: TraceAbstraction took 4186.83 ms. Allocated memory was 304.1 MB in the beginning and 427.3 MB in the end (delta: 123.2 MB). Free memory was 232.8 MB in the beginning and 366.0 MB in the end (delta: -133.2 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:07:46,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 247.5 MB. Free memory was 225.5 MB in the beginning and 224.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 659.50 ms. Allocated memory was 247.5 MB in the beginning and 304.1 MB in the end (delta: 56.6 MB). Free memory was 203.8 MB in the beginning and 260.0 MB in the end (delta: -56.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 69.28 ms. Allocated memory is still 304.1 MB. Free memory was 260.0 MB in the beginning and 257.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 304.1 MB. Free memory was 257.4 MB in the beginning and 255.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 429.90 ms. Allocated memory is still 304.1 MB. Free memory was 255.7 MB in the beginning and 233.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4186.83 ms. Allocated memory was 304.1 MB in the beginning and 427.3 MB in the end (delta: 123.2 MB). Free memory was 232.8 MB in the beginning and 366.0 MB in the end (delta: -133.2 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 175 SDslu, 412 SDs, 0 SdLazy, 393 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 441 GetRequests, 366 SyntacticMatches, 10 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 39754 SizeOfPredicates, 32 NumberOfNonLiveVariables, 536 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...