/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/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:14:42,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:14:42,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:14:42,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:14:42,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:14:42,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:14:42,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:14:42,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:14:42,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:14:42,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:14:42,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:14:42,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:14:42,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:14:42,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:14:42,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:14:42,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:14:42,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:14:42,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:14:42,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:14:42,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:14:42,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:14:42,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:14:42,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:14:42,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:14:42,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:14:42,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:14:42,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:14:42,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:14:42,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:14:42,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:14:42,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:14:42,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:14:42,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:14:42,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:14:42,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:14:42,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:14:42,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:14:42,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:14:42,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:14:42,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:14:42,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:14:42,996 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 18:14:43,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:14:43,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:14:43,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:14:43,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:14:43,024 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:14:43,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:14:43,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:14:43,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:14:43,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:14:43,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:14:43,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:14:43,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:14:43,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:14:43,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:14:43,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:14:43,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:14:43,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:14:43,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:14:43,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:14:43,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:14:43,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:14:43,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:14:43,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:14:43,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:14:43,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:14:43,031 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:14:43,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:14:43,031 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:14:43,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:14:43,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:14:43,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:14:43,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:14:43,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:14:43,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:14:43,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:14:43,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-10-09 18:14:43,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81d716d2/175fc6c08b7546b4b3adc1620513531f/FLAG91f663c58 [2020-10-09 18:14:43,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:14:43,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-10-09 18:14:43,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81d716d2/175fc6c08b7546b4b3adc1620513531f/FLAG91f663c58 [2020-10-09 18:14:44,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81d716d2/175fc6c08b7546b4b3adc1620513531f [2020-10-09 18:14:44,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:14:44,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:14:44,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:44,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:14:44,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:14:44,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6df5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44, skipping insertion in model container [2020-10-09 18:14:44,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:14:44,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:14:44,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:44,772 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:14:44,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:44,909 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:14:44,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44 WrapperNode [2020-10-09 18:14:44,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:44,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:44,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:14:44,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:14:44,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:44,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:14:44,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:14:44,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:14:44,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (1/1) ... [2020-10-09 18:14:44,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:14:44,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:14:44,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:14:44,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:14:44,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (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 18:14:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:14:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:14:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:14:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:14:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:14:45,064 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:14:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:14:45,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:14:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:14:45,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:14:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 18:14:45,065 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 18:14:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:14:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:14:45,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:14:45,068 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 18:14:45,478 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:14:45,478 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:14:45,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:45 BoogieIcfgContainer [2020-10-09 18:14:45,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:14:45,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:14:45,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:14:45,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:14:45,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:14:44" (1/3) ... [2020-10-09 18:14:45,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc47fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:45, skipping insertion in model container [2020-10-09 18:14:45,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:44" (2/3) ... [2020-10-09 18:14:45,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc47fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:45, skipping insertion in model container [2020-10-09 18:14:45,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:45" (3/3) ... [2020-10-09 18:14:45,489 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-10-09 18:14:45,499 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:14:45,506 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:14:45,507 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:14:45,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,541 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,541 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,541 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,541 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,541 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,542 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,552 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,552 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,552 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,552 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,555 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,558 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:45,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 18:14:45,593 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:14:45,593 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:14:45,593 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:14:45,593 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:14:45,593 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:14:45,594 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:14:45,594 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:14:45,594 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:14:45,608 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 18:14:45,656 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-09 18:14:45,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:45,662 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-09 18:14:45,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 18:14:45,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2020-10-09 18:14:45,693 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2020-10-09 18:14:45,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:45,694 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:45,695 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] [2020-10-09 18:14:45,695 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 1 times [2020-10-09 18:14:45,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:45,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51624112] [2020-10-09 18:14:45,717 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 18:14:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:45,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:45,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:45,929 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:45,973 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 18:14:45,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:46,045 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 18:14:46,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51624112] [2020-10-09 18:14:46,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:46,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:46,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811869181] [2020-10-09 18:14:46,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:46,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:46,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:46,293 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:46,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 150 flow. Second operand 8 states. [2020-10-09 18:14:46,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:46,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:46,297 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:46,404 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-09 18:14:46,404 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:46,405 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-09 18:14:46,406 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2020-10-09 18:14:46,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 204 flow [2020-10-09 18:14:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 706 transitions. [2020-10-09 18:14:46,426 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2020-10-09 18:14:46,427 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 706 transitions. [2020-10-09 18:14:46,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 706 transitions. [2020-10-09 18:14:46,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:46,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 706 transitions. [2020-10-09 18:14:46,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:46,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:46,449 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:46,451 INFO L185 Difference]: Start difference. First operand has 81 places, 69 transitions, 150 flow. Second operand 9 states and 706 transitions. [2020-10-09 18:14:46,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 204 flow [2020-10-09 18:14:46,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 18:14:46,461 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 162 flow [2020-10-09 18:14:46,464 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-09 18:14:46,465 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:46,465 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 162 flow [2020-10-09 18:14:46,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:46,465 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:46,466 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] [2020-10-09 18:14:46,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:14:46,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:46,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1950055099, now seen corresponding path program 1 times [2020-10-09 18:14:46,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:46,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560876300] [2020-10-09 18:14:46,681 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 18:14:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:46,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:46,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:46,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:46,839 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 18:14:46,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:46,886 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 18:14:46,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560876300] [2020-10-09 18:14:46,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:46,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:46,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868527806] [2020-10-09 18:14:46,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:46,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:46,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:46,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:46,986 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:46,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 162 flow. Second operand 8 states. [2020-10-09 18:14:46,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:46,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:46,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:47,082 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:47,082 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-09 18:14:47,083 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 82 events. 3/82 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2020-10-09 18:14:47,083 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:47,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 77 transitions, 236 flow [2020-10-09 18:14:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:47,087 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:47,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:47,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:47,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:47,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:47,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:47,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:47,092 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:47,092 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 162 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:47,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 77 transitions, 236 flow [2020-10-09 18:14:47,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 204 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:47,096 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 166 flow [2020-10-09 18:14:47,097 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-09 18:14:47,097 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:47,098 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 166 flow [2020-10-09 18:14:47,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:47,098 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:47,098 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] [2020-10-09 18:14:47,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:14:47,312 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:47,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:47,313 INFO L82 PathProgramCache]: Analyzing trace with hash -981304954, now seen corresponding path program 1 times [2020-10-09 18:14:47,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:47,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291572494] [2020-10-09 18:14:47,314 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 18:14:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:47,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:47,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:47,424 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 18:14:47,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:47,467 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 18:14:47,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291572494] [2020-10-09 18:14:47,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:47,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:47,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513785488] [2020-10-09 18:14:47,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:47,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:47,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:47,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:47,583 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:47,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 166 flow. Second operand 8 states. [2020-10-09 18:14:47,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:47,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:47,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:47,687 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:47,687 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-09 18:14:47,688 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 82 events. 3/82 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2020-10-09 18:14:47,690 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:47,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 77 transitions, 242 flow [2020-10-09 18:14:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:47,695 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:47,695 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:47,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:47,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:47,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:47,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:47,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:47,699 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:47,700 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 166 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:47,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 77 transitions, 242 flow [2020-10-09 18:14:47,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 210 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:47,703 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 170 flow [2020-10-09 18:14:47,704 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2020-10-09 18:14:47,704 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2020-10-09 18:14:47,704 INFO L481 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 170 flow [2020-10-09 18:14:47,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:47,704 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:47,704 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, 1] [2020-10-09 18:14:47,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:14:47,915 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1240123719, now seen corresponding path program 1 times [2020-10-09 18:14:47,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:47,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951014512] [2020-10-09 18:14:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:14:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:47,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:47,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:47,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:48,019 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 18:14:48,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:48,059 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 18:14:48,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951014512] [2020-10-09 18:14:48,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:48,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:48,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365002962] [2020-10-09 18:14:48,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:48,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:48,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:48,225 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:48,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 170 flow. Second operand 8 states. [2020-10-09 18:14:48,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:48,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:48,227 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:48,308 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:48,308 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-10-09 18:14:48,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 82 events. 3/82 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 129. Up to 7 conditions per place. [2020-10-09 18:14:48,310 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:48,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 77 transitions, 248 flow [2020-10-09 18:14:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:48,315 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:48,315 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:48,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:48,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:48,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:48,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:48,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:48,320 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:48,320 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 170 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:48,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 77 transitions, 248 flow [2020-10-09 18:14:48,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 216 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:48,326 INFO L241 Difference]: Finished difference. Result has 94 places, 67 transitions, 174 flow [2020-10-09 18:14:48,327 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2020-10-09 18:14:48,327 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2020-10-09 18:14:48,327 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 174 flow [2020-10-09 18:14:48,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:48,328 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:48,328 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, 1, 1, 1] [2020-10-09 18:14:48,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:14:48,541 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash 564898888, now seen corresponding path program 1 times [2020-10-09 18:14:48,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:48,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887491383] [2020-10-09 18:14:48,542 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 18:14:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:48,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:48,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:48,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:48,666 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 18:14:48,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:48,719 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 18:14:48,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887491383] [2020-10-09 18:14:48,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:48,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:48,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809175155] [2020-10-09 18:14:48,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:48,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:48,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:48,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:48,952 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:14:48,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 174 flow. Second operand 9 states. [2020-10-09 18:14:48,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:48,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:14:48,953 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:49,104 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-09 18:14:49,105 INFO L130 PetriNetUnfolder]: For 44/51 co-relation queries the response was YES. [2020-10-09 18:14:49,105 INFO L80 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 88 events. 4/88 cut-off events. For 44/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 149. Up to 7 conditions per place. [2020-10-09 18:14:49,106 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:14:49,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 79 transitions, 277 flow [2020-10-09 18:14:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:14:49,109 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:14:49,110 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:14:49,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:14:49,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:49,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:14:49,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:49,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:49,114 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:49,115 INFO L185 Difference]: Start difference. First operand has 94 places, 67 transitions, 174 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:14:49,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 79 transitions, 277 flow [2020-10-09 18:14:49,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 243 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:49,118 INFO L241 Difference]: Finished difference. Result has 97 places, 67 transitions, 188 flow [2020-10-09 18:14:49,118 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2020-10-09 18:14:49,119 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2020-10-09 18:14:49,119 INFO L481 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 188 flow [2020-10-09 18:14:49,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:49,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:49,119 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, 1, 1, 1, 1] [2020-10-09 18:14:49,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:14:49,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash -304625474, now seen corresponding path program 1 times [2020-10-09 18:14:49,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:49,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104540424] [2020-10-09 18:14:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:49,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:49,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:49,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:49,447 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 18:14:49,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:49,512 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 18:14:49,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104540424] [2020-10-09 18:14:49,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:49,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:49,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151472277] [2020-10-09 18:14:49,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:49,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:49,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:49,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:49,730 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:14:49,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 188 flow. Second operand 9 states. [2020-10-09 18:14:49,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:49,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:14:49,731 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:49,848 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2020-10-09 18:14:49,849 INFO L130 PetriNetUnfolder]: For 87/113 co-relation queries the response was YES. [2020-10-09 18:14:49,850 INFO L80 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 93 events. 4/93 cut-off events. For 87/113 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 169. Up to 7 conditions per place. [2020-10-09 18:14:49,851 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:14:49,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 79 transitions, 297 flow [2020-10-09 18:14:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:14:49,856 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:14:49,856 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:14:49,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:14:49,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:49,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:14:49,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:49,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:49,866 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:49,866 INFO L185 Difference]: Start difference. First operand has 97 places, 67 transitions, 188 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:14:49,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 79 transitions, 297 flow [2020-10-09 18:14:49,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 79 transitions, 247 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:14:49,879 INFO L241 Difference]: Finished difference. Result has 98 places, 67 transitions, 192 flow [2020-10-09 18:14:49,879 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=98, PETRI_TRANSITIONS=67} [2020-10-09 18:14:49,879 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2020-10-09 18:14:49,880 INFO L481 AbstractCegarLoop]: Abstraction has has 98 places, 67 transitions, 192 flow [2020-10-09 18:14:49,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:49,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:49,880 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, 1, 1, 1, 1, 1] [2020-10-09 18:14:50,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 18:14:50,095 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1847431572, now seen corresponding path program 1 times [2020-10-09 18:14:50,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:50,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003883872] [2020-10-09 18:14:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:50,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:50,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:50,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:50,214 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 18:14:50,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:50,260 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 18:14:50,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003883872] [2020-10-09 18:14:50,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:50,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:50,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041135983] [2020-10-09 18:14:50,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:50,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:50,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:50,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:50,450 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:14:50,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 67 transitions, 192 flow. Second operand 9 states. [2020-10-09 18:14:50,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:50,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:14:50,451 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:50,571 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-09 18:14:50,571 INFO L130 PetriNetUnfolder]: For 79/82 co-relation queries the response was YES. [2020-10-09 18:14:50,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 4/88 cut-off events. For 79/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 3/90 useless extension candidates. Maximal degree in co-relation 161. Up to 7 conditions per place. [2020-10-09 18:14:50,572 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:14:50,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 79 transitions, 301 flow [2020-10-09 18:14:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:14:50,576 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:14:50,577 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:14:50,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:14:50,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:50,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:14:50,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:50,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:50,581 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:50,581 INFO L185 Difference]: Start difference. First operand has 98 places, 67 transitions, 192 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:14:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 79 transitions, 301 flow [2020-10-09 18:14:50,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 79 transitions, 251 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:14:50,584 INFO L241 Difference]: Finished difference. Result has 99 places, 67 transitions, 196 flow [2020-10-09 18:14:50,585 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2020-10-09 18:14:50,585 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2020-10-09 18:14:50,585 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 196 flow [2020-10-09 18:14:50,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:50,585 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:50,585 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, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:50,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 18:14:50,797 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:50,797 INFO L82 PathProgramCache]: Analyzing trace with hash 609192252, now seen corresponding path program 1 times [2020-10-09 18:14:50,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:50,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348582504] [2020-10-09 18:14:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:50,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:50,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:50,897 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:50,937 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 18:14:50,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:50,978 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 18:14:50,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348582504] [2020-10-09 18:14:50,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:50,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:50,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889704194] [2020-10-09 18:14:50,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:51,151 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:14:51,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 196 flow. Second operand 9 states. [2020-10-09 18:14:51,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:51,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:14:51,152 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:51,265 INFO L129 PetriNetUnfolder]: 4/73 cut-off events. [2020-10-09 18:14:51,266 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-09 18:14:51,266 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 73 events. 4/73 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 133. Up to 5 conditions per place. [2020-10-09 18:14:51,267 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2020-10-09 18:14:51,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 72 transitions, 254 flow [2020-10-09 18:14:51,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 758 transitions. [2020-10-09 18:14:51,272 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8813953488372093 [2020-10-09 18:14:51,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 758 transitions. [2020-10-09 18:14:51,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 758 transitions. [2020-10-09 18:14:51,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:51,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 758 transitions. [2020-10-09 18:14:51,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:51,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:51,277 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:51,278 INFO L185 Difference]: Start difference. First operand has 99 places, 67 transitions, 196 flow. Second operand 10 states and 758 transitions. [2020-10-09 18:14:51,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 72 transitions, 254 flow [2020-10-09 18:14:51,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 72 transitions, 220 flow, removed 12 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:51,281 INFO L241 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2020-10-09 18:14:51,281 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2020-10-09 18:14:51,282 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:51,282 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2020-10-09 18:14:51,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:51,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-09 18:14:51,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:14:51 BasicIcfg [2020-10-09 18:14:51,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:14:51,500 INFO L168 Benchmark]: Toolchain (without parser) took 7261.02 ms. Allocated memory was 250.6 MB in the beginning and 424.7 MB in the end (delta: 174.1 MB). Free memory was 205.7 MB in the beginning and 328.0 MB in the end (delta: -122.3 MB). Peak memory consumption was 51.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:51,501 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:14:51,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.13 ms. Allocated memory was 250.6 MB in the beginning and 312.5 MB in the end (delta: 61.9 MB). Free memory was 205.7 MB in the beginning and 262.9 MB in the end (delta: -57.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:51,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.87 ms. Allocated memory is still 312.5 MB. Free memory was 262.9 MB in the beginning and 260.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:51,503 INFO L168 Benchmark]: Boogie Preprocessor took 33.37 ms. Allocated memory is still 312.5 MB. Free memory was 260.4 MB in the beginning and 257.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:51,504 INFO L168 Benchmark]: RCFGBuilder took 484.55 ms. Allocated memory is still 312.5 MB. Free memory was 257.9 MB in the beginning and 233.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:51,505 INFO L168 Benchmark]: TraceAbstraction took 6016.15 ms. Allocated memory was 312.5 MB in the beginning and 424.7 MB in the end (delta: 112.2 MB). Free memory was 233.5 MB in the beginning and 328.0 MB in the end (delta: -94.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:51,509 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 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 670.13 ms. Allocated memory was 250.6 MB in the beginning and 312.5 MB in the end (delta: 61.9 MB). Free memory was 205.7 MB in the beginning and 262.9 MB in the end (delta: -57.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.87 ms. Allocated memory is still 312.5 MB. Free memory was 262.9 MB in the beginning and 260.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 33.37 ms. Allocated memory is still 312.5 MB. Free memory was 260.4 MB in the beginning and 257.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 484.55 ms. Allocated memory is still 312.5 MB. Free memory was 257.9 MB in the beginning and 233.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6016.15 ms. Allocated memory was 312.5 MB in the beginning and 424.7 MB in the end (delta: 112.2 MB). Free memory was 233.5 MB in the beginning and 328.0 MB in the end (delta: -94.4 MB). Peak memory consumption was 17.7 MB. 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 5 procedures, 85 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: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 331 SDslu, 647 SDs, 0 SdLazy, 464 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 820 GetRequests, 700 SyntacticMatches, 20 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=7, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 772 ConstructedInterpolants, 0 QuantifiedInterpolants, 108762 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...