/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/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:52:45,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:52:45,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:52:45,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:52:45,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:52:45,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:52:45,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:52:45,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:52:45,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:52:45,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:52:45,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:52:45,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:52:45,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:52:45,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:52:45,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:52:45,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:52:45,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:52:45,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:52:45,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:52:45,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:52:45,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:52:45,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:52:45,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:52:45,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:52:45,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:52:45,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:52:45,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:52:45,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:52:45,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:52:45,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:52:45,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:52:45,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:52:45,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:52:45,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:52:45,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:52:45,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:52:45,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:52:45,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:52:45,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:52:45,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:52:45,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:52:45,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 16:52:46,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:52:46,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:52:46,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:52:46,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:52:46,024 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:52:46,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:52:46,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:52:46,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:52:46,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:52:46,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:52:46,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:52:46,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:52:46,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:52:46,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:52:46,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:52:46,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:52:46,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:52:46,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:52:46,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:52:46,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:52:46,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:52:46,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:52:46,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:52:46,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:52:46,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:52:46,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:52:46,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:52:46,029 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 16:52:46,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 16:52:46,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:52:46,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:52:46,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:52:46,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:52:46,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:52:46,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:52:46,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2020-10-11 16:52:46,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2dc94506/f220e126775b4d82b0ddf558c981ba16/FLAG71dd5b991 [2020-10-11 16:52:47,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:52:47,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2020-10-11 16:52:47,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2dc94506/f220e126775b4d82b0ddf558c981ba16/FLAG71dd5b991 [2020-10-11 16:52:47,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2dc94506/f220e126775b4d82b0ddf558c981ba16 [2020-10-11 16:52:47,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:52:47,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:52:47,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:52:47,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:52:47,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:52:47,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:52:47" (1/1) ... [2020-10-11 16:52:47,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3160c620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:47, skipping insertion in model container [2020-10-11 16:52:47,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:52:47" (1/1) ... [2020-10-11 16:52:48,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:52:48,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:52:49,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:52:49,062 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:52:49,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:52:49,301 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:52:49,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49 WrapperNode [2020-10-11 16:52:49,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:52:49,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:52:49,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:52:49,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:52:49,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:52:49,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:52:49,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:52:49,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:52:49,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (1/1) ... [2020-10-11 16:52:49,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:52:49,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:52:49,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:52:49,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:52:49,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (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 [2020-10-11 16:52:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-11 16:52:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-11 16:52:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-11 16:52:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-11 16:52:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:52:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:52:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:52:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:52:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 16:52:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 16:52:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:52:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:52:49,546 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:52:50,204 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:52:50,205 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-11 16:52:50,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:52:50 BoogieIcfgContainer [2020-10-11 16:52:50,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:52:50,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:52:50,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:52:50,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:52:50,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:52:47" (1/3) ... [2020-10-11 16:52:50,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cc62f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:52:50, skipping insertion in model container [2020-10-11 16:52:50,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:49" (2/3) ... [2020-10-11 16:52:50,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cc62f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:52:50, skipping insertion in model container [2020-10-11 16:52:50,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:52:50" (3/3) ... [2020-10-11 16:52:50,222 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2020-10-11 16:52:50,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:52:50,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 16:52:50,259 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:52:50,308 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,309 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,309 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,309 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,310 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,311 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,311 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,311 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,312 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,312 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,313 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,313 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,314 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,314 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,314 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,315 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,315 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,315 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,315 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,316 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,316 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,317 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,317 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,318 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,318 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,318 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,319 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,319 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,319 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,320 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,320 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,320 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,320 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,321 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,321 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,321 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,322 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,322 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,322 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,323 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,323 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,323 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,324 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,324 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,324 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,325 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,325 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,325 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,326 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,326 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,326 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,327 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,327 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,327 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,327 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,327 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,328 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,328 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,329 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,329 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,329 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,330 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,330 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,330 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,331 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,331 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,331 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,332 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,333 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,333 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,334 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,334 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,334 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,335 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,335 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,335 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,336 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,336 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,336 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,337 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,337 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,337 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,338 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,338 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,338 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,338 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,339 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,339 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,339 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,339 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,340 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,340 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,340 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,340 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,341 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,341 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,341 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,342 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,342 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,342 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,343 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,343 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,343 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,344 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,344 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,344 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,345 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,345 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,345 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,346 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,346 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,346 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,347 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,347 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,347 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,347 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,348 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,348 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,348 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,348 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,349 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,349 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,349 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,355 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,356 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,356 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,356 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,357 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,357 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,357 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,358 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,359 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,359 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,359 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,360 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,360 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,360 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,361 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,361 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,361 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,361 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,362 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,362 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,378 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,379 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,379 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,380 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,380 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,380 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,380 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,381 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,381 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,381 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,382 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,382 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,382 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,382 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,383 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,383 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,383 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,383 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:50,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 16:52:50,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:52:50,465 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 16:52:50,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:52:50,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:52:50,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:52:50,466 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:52:50,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:52:50,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:52:50,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-10-11 16:52:50,599 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-10-11 16:52:50,599 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:52:50,609 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-11 16:52:50,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 138 transitions, 298 flow [2020-10-11 16:52:50,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 126 transitions, 264 flow [2020-10-11 16:52:50,653 INFO L129 PetriNetUnfolder]: 6/101 cut-off events. [2020-10-11 16:52:50,654 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 16:52:50,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:50,656 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:50,657 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1945168569, now seen corresponding path program 1 times [2020-10-11 16:52:50,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:50,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298730129] [2020-10-11 16:52:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:51,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298730129] [2020-10-11 16:52:51,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:51,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:51,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391150030] [2020-10-11 16:52:51,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:51,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:51,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:51,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:51,381 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2020-10-11 16:52:51,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 264 flow. Second operand 3 states. [2020-10-11 16:52:51,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:51,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2020-10-11 16:52:51,387 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:51,561 INFO L129 PetriNetUnfolder]: 19/310 cut-off events. [2020-10-11 16:52:51,562 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2020-10-11 16:52:51,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 310 events. 19/310 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 738 event pairs, 3 based on Foata normal form. 36/321 useless extension candidates. Maximal degree in co-relation 310. Up to 23 conditions per place. [2020-10-11 16:52:51,582 INFO L132 encePairwiseOnDemand]: 128/138 looper letters, 5 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2020-10-11 16:52:51,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 272 flow [2020-10-11 16:52:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2020-10-11 16:52:51,619 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.961352657004831 [2020-10-11 16:52:51,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2020-10-11 16:52:51,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2020-10-11 16:52:51,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:51,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2020-10-11 16:52:51,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:51,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:51,648 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:51,655 INFO L185 Difference]: Start difference. First operand has 122 places, 126 transitions, 264 flow. Second operand 3 states and 398 transitions. [2020-10-11 16:52:51,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 272 flow [2020-10-11 16:52:51,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 122 transitions, 264 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 16:52:51,670 INFO L241 Difference]: Finished difference. Result has 121 places, 122 transitions, 263 flow [2020-10-11 16:52:51,675 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2020-10-11 16:52:51,676 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2020-10-11 16:52:51,676 INFO L481 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 263 flow [2020-10-11 16:52:51,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:51,677 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:51,677 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, 1, 1, 1] [2020-10-11 16:52:51,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:52:51,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2070190818, now seen corresponding path program 1 times [2020-10-11 16:52:51,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:51,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109810402] [2020-10-11 16:52:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:51,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109810402] [2020-10-11 16:52:51,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:51,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:52:51,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861597067] [2020-10-11 16:52:51,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 16:52:51,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:51,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 16:52:51,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 16:52:52,015 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 138 [2020-10-11 16:52:52,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 263 flow. Second operand 4 states. [2020-10-11 16:52:52,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:52,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 138 [2020-10-11 16:52:52,016 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:52,136 INFO L129 PetriNetUnfolder]: 15/358 cut-off events. [2020-10-11 16:52:52,136 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 16:52:52,143 INFO L80 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 358 events. 15/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 870 event pairs, 1 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 340. Up to 17 conditions per place. [2020-10-11 16:52:52,146 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 7 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2020-10-11 16:52:52,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 125 transitions, 291 flow [2020-10-11 16:52:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 16:52:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-11 16:52:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2020-10-11 16:52:52,151 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2020-10-11 16:52:52,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2020-10-11 16:52:52,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2020-10-11 16:52:52,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:52,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2020-10-11 16:52:52,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-11 16:52:52,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-11 16:52:52,158 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-11 16:52:52,158 INFO L185 Difference]: Start difference. First operand has 121 places, 122 transitions, 263 flow. Second operand 4 states and 512 transitions. [2020-10-11 16:52:52,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 125 transitions, 291 flow [2020-10-11 16:52:52,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:52,165 INFO L241 Difference]: Finished difference. Result has 125 places, 125 transitions, 288 flow [2020-10-11 16:52:52,166 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2020-10-11 16:52:52,167 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2020-10-11 16:52:52,167 INFO L481 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 288 flow [2020-10-11 16:52:52,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 16:52:52,168 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:52,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:52,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:52:52,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash -704311903, now seen corresponding path program 1 times [2020-10-11 16:52:52,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:52,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650946471] [2020-10-11 16:52:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:52,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650946471] [2020-10-11 16:52:52,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:52,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:52,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988539470] [2020-10-11 16:52:52,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:52,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:52,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:52,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:52,364 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 138 [2020-10-11 16:52:52,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 288 flow. Second operand 3 states. [2020-10-11 16:52:52,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:52,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 138 [2020-10-11 16:52:52,365 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:52,436 INFO L129 PetriNetUnfolder]: 13/367 cut-off events. [2020-10-11 16:52:52,437 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:52:52,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 367 events. 13/367 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1117 event pairs, 2 based on Foata normal form. 9/357 useless extension candidates. Maximal degree in co-relation 374. Up to 13 conditions per place. [2020-10-11 16:52:52,441 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 2 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2020-10-11 16:52:52,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 300 flow [2020-10-11 16:52:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2020-10-11 16:52:52,444 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9396135265700483 [2020-10-11 16:52:52,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2020-10-11 16:52:52,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2020-10-11 16:52:52,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:52,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2020-10-11 16:52:52,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:52,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:52,449 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:52,449 INFO L185 Difference]: Start difference. First operand has 125 places, 125 transitions, 288 flow. Second operand 3 states and 389 transitions. [2020-10-11 16:52:52,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 300 flow [2020-10-11 16:52:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:52,455 INFO L241 Difference]: Finished difference. Result has 126 places, 125 transitions, 294 flow [2020-10-11 16:52:52,455 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2020-10-11 16:52:52,456 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 4 predicate places. [2020-10-11 16:52:52,456 INFO L481 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 294 flow [2020-10-11 16:52:52,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:52,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:52,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:52,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:52:52,457 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:52,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1590038005, now seen corresponding path program 1 times [2020-10-11 16:52:52,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:52,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218687828] [2020-10-11 16:52:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:52,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218687828] [2020-10-11 16:52:52,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:52,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:52,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118250011] [2020-10-11 16:52:52,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:52,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:52,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:52,656 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 138 [2020-10-11 16:52:52,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 294 flow. Second operand 3 states. [2020-10-11 16:52:52,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:52,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 138 [2020-10-11 16:52:52,658 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:52,758 INFO L129 PetriNetUnfolder]: 12/359 cut-off events. [2020-10-11 16:52:52,759 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-11 16:52:52,761 INFO L80 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 359 events. 12/359 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 929 event pairs, 1 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 383. Up to 14 conditions per place. [2020-10-11 16:52:52,763 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 6 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2020-10-11 16:52:52,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 125 transitions, 318 flow [2020-10-11 16:52:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2020-10-11 16:52:52,766 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9396135265700483 [2020-10-11 16:52:52,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2020-10-11 16:52:52,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2020-10-11 16:52:52,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:52,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2020-10-11 16:52:52,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:52,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:52,771 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:52,771 INFO L185 Difference]: Start difference. First operand has 126 places, 125 transitions, 294 flow. Second operand 3 states and 389 transitions. [2020-10-11 16:52:52,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 125 transitions, 318 flow [2020-10-11 16:52:52,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:52,777 INFO L241 Difference]: Finished difference. Result has 127 places, 125 transitions, 318 flow [2020-10-11 16:52:52,778 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2020-10-11 16:52:52,778 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2020-10-11 16:52:52,778 INFO L481 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 318 flow [2020-10-11 16:52:52,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:52,779 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:52,779 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:52,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:52:52,780 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:52,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1239398404, now seen corresponding path program 1 times [2020-10-11 16:52:52,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:52,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872958990] [2020-10-11 16:52:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:52,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872958990] [2020-10-11 16:52:52,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561523519] [2020-10-11 16:52:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:52:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:53,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 16:52:53,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:52:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:53,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:52:53,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-11 16:52:53,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357564277] [2020-10-11 16:52:53,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:52:53,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:53,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:52:53,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:52:53,429 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2020-10-11 16:52:53,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 318 flow. Second operand 7 states. [2020-10-11 16:52:53,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:53,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2020-10-11 16:52:53,430 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:53,612 INFO L129 PetriNetUnfolder]: 18/519 cut-off events. [2020-10-11 16:52:53,613 INFO L130 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2020-10-11 16:52:53,615 INFO L80 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 519 events. 18/519 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1490 event pairs, 0 based on Foata normal form. 5/500 useless extension candidates. Maximal degree in co-relation 610. Up to 29 conditions per place. [2020-10-11 16:52:53,617 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 20 selfloop transitions, 11 changer transitions 0/141 dead transitions. [2020-10-11 16:52:53,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 141 transitions, 436 flow [2020-10-11 16:52:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 16:52:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 16:52:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1120 transitions. [2020-10-11 16:52:53,622 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9017713365539453 [2020-10-11 16:52:53,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1120 transitions. [2020-10-11 16:52:53,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1120 transitions. [2020-10-11 16:52:53,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:53,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1120 transitions. [2020-10-11 16:52:53,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 16:52:53,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 16:52:53,629 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 16:52:53,629 INFO L185 Difference]: Start difference. First operand has 127 places, 125 transitions, 318 flow. Second operand 9 states and 1120 transitions. [2020-10-11 16:52:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 141 transitions, 436 flow [2020-10-11 16:52:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 141 transitions, 418 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-11 16:52:53,635 INFO L241 Difference]: Finished difference. Result has 137 places, 134 transitions, 392 flow [2020-10-11 16:52:53,636 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2020-10-11 16:52:53,636 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2020-10-11 16:52:53,636 INFO L481 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 392 flow [2020-10-11 16:52:53,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:52:53,636 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:53,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:53,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:52:53,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:52:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:53,853 INFO L82 PathProgramCache]: Analyzing trace with hash 709744620, now seen corresponding path program 1 times [2020-10-11 16:52:53,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:53,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553271180] [2020-10-11 16:52:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:52:55,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553271180] [2020-10-11 16:52:55,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:55,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-11 16:52:55,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498088562] [2020-10-11 16:52:55,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:52:55,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:55,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:52:55,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:53:13,223 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 138 [2020-10-11 16:53:13,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 392 flow. Second operand 20 states. [2020-10-11 16:53:13,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:13,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 138 [2020-10-11 16:53:13,227 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:14,438 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-11 16:53:15,316 INFO L129 PetriNetUnfolder]: 133/1392 cut-off events. [2020-10-11 16:53:15,317 INFO L130 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2020-10-11 16:53:15,324 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1392 events. 133/1392 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7517 event pairs, 4 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 1185. Up to 205 conditions per place. [2020-10-11 16:53:15,334 INFO L132 encePairwiseOnDemand]: 117/138 looper letters, 81 selfloop transitions, 23 changer transitions 2/208 dead transitions. [2020-10-11 16:53:15,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 208 transitions, 760 flow [2020-10-11 16:53:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 16:53:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-11 16:53:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2027 transitions. [2020-10-11 16:53:15,345 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7344202898550725 [2020-10-11 16:53:15,345 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2027 transitions. [2020-10-11 16:53:15,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2027 transitions. [2020-10-11 16:53:15,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:15,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2027 transitions. [2020-10-11 16:53:15,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 21 states. [2020-10-11 16:53:15,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 21 states. [2020-10-11 16:53:15,366 INFO L81 ComplementDD]: Finished complementDD. Result 21 states. [2020-10-11 16:53:15,366 INFO L185 Difference]: Start difference. First operand has 137 places, 134 transitions, 392 flow. Second operand 20 states and 2027 transitions. [2020-10-11 16:53:15,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 208 transitions, 760 flow [2020-10-11 16:53:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 208 transitions, 754 flow, removed 2 selfloop flow, removed 1 redundant places. [2020-10-11 16:53:15,378 INFO L241 Difference]: Finished difference. Result has 169 places, 154 transitions, 545 flow [2020-10-11 16:53:15,378 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=545, PETRI_PLACES=169, PETRI_TRANSITIONS=154} [2020-10-11 16:53:15,379 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 47 predicate places. [2020-10-11 16:53:15,379 INFO L481 AbstractCegarLoop]: Abstraction has has 169 places, 154 transitions, 545 flow [2020-10-11 16:53:15,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:53:15,379 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:15,379 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:15,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:53:15,380 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:53:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash 479974357, now seen corresponding path program 1 times [2020-10-11 16:53:15,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:15,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158161141] [2020-10-11 16:53:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:15,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158161141] [2020-10-11 16:53:15,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073524283] [2020-10-11 16:53:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:15,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:53:15,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 16:53:15,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:53:15,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2020-10-11 16:53:15,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202138958] [2020-10-11 16:53:15,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:53:15,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:15,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:53:15,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:53:15,991 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 138 [2020-10-11 16:53:15,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 154 transitions, 545 flow. Second operand 6 states. [2020-10-11 16:53:15,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:15,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 138 [2020-10-11 16:53:15,993 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:16,277 INFO L129 PetriNetUnfolder]: 50/1168 cut-off events. [2020-10-11 16:53:16,278 INFO L130 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2020-10-11 16:53:16,285 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 1168 events. 50/1168 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5652 event pairs, 1 based on Foata normal form. 6/1147 useless extension candidates. Maximal degree in co-relation 1259. Up to 63 conditions per place. [2020-10-11 16:53:16,290 INFO L132 encePairwiseOnDemand]: 128/138 looper letters, 26 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2020-10-11 16:53:16,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 707 flow [2020-10-11 16:53:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 16:53:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 16:53:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 979 transitions. [2020-10-11 16:53:16,294 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8867753623188406 [2020-10-11 16:53:16,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 979 transitions. [2020-10-11 16:53:16,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 979 transitions. [2020-10-11 16:53:16,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:16,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 979 transitions. [2020-10-11 16:53:16,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 16:53:16,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 16:53:16,300 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 16:53:16,301 INFO L185 Difference]: Start difference. First operand has 169 places, 154 transitions, 545 flow. Second operand 8 states and 979 transitions. [2020-10-11 16:53:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 707 flow [2020-10-11 16:53:16,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 698 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-11 16:53:16,309 INFO L241 Difference]: Finished difference. Result has 178 places, 161 transitions, 662 flow [2020-10-11 16:53:16,309 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=178, PETRI_TRANSITIONS=161} [2020-10-11 16:53:16,310 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 56 predicate places. [2020-10-11 16:53:16,310 INFO L481 AbstractCegarLoop]: Abstraction has has 178 places, 161 transitions, 662 flow [2020-10-11 16:53:16,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:53:16,310 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:16,310 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:16,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:16,526 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:53:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:16,526 INFO L82 PathProgramCache]: Analyzing trace with hash 886288476, now seen corresponding path program 2 times [2020-10-11 16:53:16,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:16,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726619483] [2020-10-11 16:53:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:16,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726619483] [2020-10-11 16:53:16,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017403220] [2020-10-11 16:53:16,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:16,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:53:16,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:53:16,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:53:16,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:16,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:53:16,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-11 16:53:16,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678229427] [2020-10-11 16:53:16,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:53:16,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:16,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:53:16,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:53:17,106 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2020-10-11 16:53:17,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 161 transitions, 662 flow. Second operand 9 states. [2020-10-11 16:53:17,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:17,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2020-10-11 16:53:17,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:17,418 INFO L129 PetriNetUnfolder]: 40/1164 cut-off events. [2020-10-11 16:53:17,418 INFO L130 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2020-10-11 16:53:17,426 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 1164 events. 40/1164 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5541 event pairs, 0 based on Foata normal form. 3/1142 useless extension candidates. Maximal degree in co-relation 1891. Up to 61 conditions per place. [2020-10-11 16:53:17,431 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 28 selfloop transitions, 18 changer transitions 0/176 dead transitions. [2020-10-11 16:53:17,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 176 transitions, 845 flow [2020-10-11 16:53:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 16:53:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 16:53:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1489 transitions. [2020-10-11 16:53:17,437 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8991545893719807 [2020-10-11 16:53:17,438 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1489 transitions. [2020-10-11 16:53:17,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1489 transitions. [2020-10-11 16:53:17,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:17,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1489 transitions. [2020-10-11 16:53:17,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 16:53:17,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 16:53:17,446 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 16:53:17,446 INFO L185 Difference]: Start difference. First operand has 178 places, 161 transitions, 662 flow. Second operand 12 states and 1489 transitions. [2020-10-11 16:53:17,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 176 transitions, 845 flow [2020-10-11 16:53:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 176 transitions, 823 flow, removed 11 selfloop flow, removed 0 redundant places. [2020-10-11 16:53:17,454 INFO L241 Difference]: Finished difference. Result has 192 places, 166 transitions, 748 flow [2020-10-11 16:53:17,455 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=748, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2020-10-11 16:53:17,455 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 70 predicate places. [2020-10-11 16:53:17,455 INFO L481 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 748 flow [2020-10-11 16:53:17,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:53:17,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:17,456 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:17,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:17,670 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:53:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1159314548, now seen corresponding path program 1 times [2020-10-11 16:53:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:17,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201792967] [2020-10-11 16:53:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:53:18,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201792967] [2020-10-11 16:53:18,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614269798] [2020-10-11 16:53:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:18,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 56 conjunts are in the unsatisfiable core [2020-10-11 16:53:18,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:18,939 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-11 16:53:18,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:53:19,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 16:53:19,713 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2020-10-11 16:53:19,714 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:53:19,757 INFO L625 ElimStorePlain]: treesize reduction 13, result has 82.2 percent of original size [2020-10-11 16:53:19,761 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:53:19,762 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:59 [2020-10-11 16:53:20,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 16:53:20,077 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 37 [2020-10-11 16:53:20,078 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:53:20,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:53:20,099 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 16:53:20,099 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:70 [2020-10-11 16:53:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 16:53:21,145 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:53:21,145 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 24 [2020-10-11 16:53:21,147 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:53:21,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:53:21,166 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:53:21,166 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:77, output treesize:18 [2020-10-11 16:53:21,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 16:53:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:21,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:53:21,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [25] total 50 [2020-10-11 16:53:21,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086320194] [2020-10-11 16:53:21,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-11 16:53:21,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-11 16:53:21,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2282, Unknown=0, NotChecked=0, Total=2450 [2020-10-11 16:54:01,201 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 138 [2020-10-11 16:54:01,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 748 flow. Second operand 28 states. [2020-10-11 16:54:01,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:54:01,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 138 [2020-10-11 16:54:01,203 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:54:02,303 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-11 16:54:02,618 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-11 16:54:02,965 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-11 16:54:03,406 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-11 16:54:03,683 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-11 16:54:04,183 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-11 16:54:04,581 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-11 16:54:05,251 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 16:54:05,836 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 16:54:06,276 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-11 16:54:06,828 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-11 16:54:07,401 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 16:54:07,844 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-11 16:54:08,171 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-11 16:54:08,741 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-11 16:54:09,230 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-11 16:54:09,760 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-11 16:54:10,263 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-11 16:54:10,822 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-11 16:54:11,606 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-10-11 16:54:12,044 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-11 16:54:12,432 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-11 16:54:12,751 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-11 16:54:13,579 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2020-10-11 16:54:13,940 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-11 16:54:14,522 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:54:14,971 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:54:15,490 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-11 16:54:16,059 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:54:16,516 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-11 16:54:16,981 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-11 16:54:17,655 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-11 16:54:18,150 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-11 16:54:18,767 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 16:54:19,496 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-11 16:54:20,086 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-11 16:54:20,665 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-11 16:54:21,457 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2020-10-11 16:54:22,063 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-11 16:54:22,980 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-11 16:54:23,725 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-11 16:54:24,373 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-11 16:54:25,235 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-11 16:54:26,068 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-11 16:54:26,764 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-11 16:54:27,308 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-11 16:54:27,886 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-11 16:54:28,536 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 16:54:29,099 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:54:29,921 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:54:30,672 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-11 16:54:31,640 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2020-10-11 16:54:32,475 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-11 16:54:33,691 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2020-10-11 16:54:34,721 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-10-11 16:54:35,453 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-10-11 16:54:36,166 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-11 16:54:37,172 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-11 16:54:37,928 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-11 16:54:38,732 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-10-11 16:54:39,702 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-11 16:54:40,411 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-11 16:54:41,039 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-11 16:54:41,960 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-10-11 16:54:42,845 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-11 16:54:43,891 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-11 16:54:44,871 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2020-10-11 16:54:46,227 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2020-10-11 16:54:46,335 INFO L129 PetriNetUnfolder]: 294/2474 cut-off events. [2020-10-11 16:54:46,335 INFO L130 PetriNetUnfolder]: For 1375/1375 co-relation queries the response was YES. [2020-10-11 16:54:46,349 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 2474 events. 294/2474 cut-off events. For 1375/1375 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15432 event pairs, 37 based on Foata normal form. 10/2430 useless extension candidates. Maximal degree in co-relation 4007. Up to 312 conditions per place. [2020-10-11 16:54:46,358 INFO L132 encePairwiseOnDemand]: 100/138 looper letters, 220 selfloop transitions, 123 changer transitions 0/413 dead transitions. [2020-10-11 16:54:46,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 413 transitions, 2394 flow [2020-10-11 16:54:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-11 16:54:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-11 16:54:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 6542 transitions. [2020-10-11 16:54:46,378 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6000733810310035 [2020-10-11 16:54:46,378 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 6542 transitions. [2020-10-11 16:54:46,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 6542 transitions. [2020-10-11 16:54:46,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:54:46,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 6542 transitions. [2020-10-11 16:54:46,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 80 states. [2020-10-11 16:54:46,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 80 states. [2020-10-11 16:54:46,408 INFO L81 ComplementDD]: Finished complementDD. Result 80 states. [2020-10-11 16:54:46,408 INFO L185 Difference]: Start difference. First operand has 192 places, 166 transitions, 748 flow. Second operand 79 states and 6542 transitions. [2020-10-11 16:54:46,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 413 transitions, 2394 flow [2020-10-11 16:54:46,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 413 transitions, 2327 flow, removed 22 selfloop flow, removed 7 redundant places. [2020-10-11 16:54:46,426 INFO L241 Difference]: Finished difference. Result has 295 places, 290 transitions, 1764 flow [2020-10-11 16:54:46,427 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=1764, PETRI_PLACES=295, PETRI_TRANSITIONS=290} [2020-10-11 16:54:46,427 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 173 predicate places. [2020-10-11 16:54:46,427 INFO L481 AbstractCegarLoop]: Abstraction has has 295 places, 290 transitions, 1764 flow [2020-10-11 16:54:46,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-11 16:54:46,427 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:54:46,428 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:54:46,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:54:46,629 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:54:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:54:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2021173178, now seen corresponding path program 2 times [2020-10-11 16:54:46,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:54:46,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329249751] [2020-10-11 16:54:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:54:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:54:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:54:48,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329249751] [2020-10-11 16:54:48,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361332568] [2020-10-11 16:54:48,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:54:48,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-11 16:54:48,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:54:48,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-11 16:54:48,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:54:48,673 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-11 16:54:48,673 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:54:48,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 16:54:49,164 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2020-10-11 16:54:49,773 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2020-10-11 16:54:49,774 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:54:49,840 INFO L625 ElimStorePlain]: treesize reduction 13, result has 79.7 percent of original size [2020-10-11 16:54:49,842 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:54:49,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:68, output treesize:50 [2020-10-11 16:54:51,304 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 21 [2020-10-11 16:54:51,305 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:54:51,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:54:51,325 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:54:51,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:18 [2020-10-11 16:54:51,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 16:54:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:54:51,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:54:51,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [26] total 45 [2020-10-11 16:54:51,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587550597] [2020-10-11 16:54:51,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-11 16:54:51,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:54:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-11 16:54:51,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 16:56:13,226 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 138 [2020-10-11 16:56:13,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 290 transitions, 1764 flow. Second operand 22 states. [2020-10-11 16:56:13,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:56:13,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 138 [2020-10-11 16:56:13,228 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:56:13,800 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-11 16:56:14,707 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-11 16:56:15,286 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-11 16:56:16,010 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-11 16:56:16,907 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-11 16:56:17,815 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-11 16:56:19,058 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-11 16:56:20,427 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 16:56:21,702 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-11 16:56:23,482 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-11 16:56:24,821 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 16:56:25,677 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-11 16:56:26,251 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-11 16:56:26,917 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-11 16:56:28,187 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:56:28,970 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-11 16:56:30,533 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:56:31,235 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-11 16:56:31,887 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-11 16:56:33,544 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-11 16:56:34,723 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-11 16:56:35,602 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-11 16:56:36,534 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-11 16:56:37,658 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:56:38,609 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-11 16:56:40,073 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-11 16:56:41,551 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:56:43,388 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:56:45,186 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-10-11 16:56:46,496 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 16:56:48,141 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-11 16:56:49,118 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-11 16:56:50,078 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-11 16:56:51,185 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-11 16:56:52,422 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-11 16:56:53,581 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:56:55,044 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-11 16:56:56,503 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:56:58,268 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:56:59,965 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-11 16:57:02,061 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-10-11 16:57:03,882 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-11 16:57:05,218 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-11 16:57:06,114 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-11 16:57:07,941 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-11 16:57:08,865 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-11 16:57:10,302 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:57:11,001 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-11 16:57:12,221 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-11 16:57:13,567 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-11 16:57:14,770 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-11 16:57:16,391 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-11 16:57:17,999 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-11 16:57:19,821 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-11 16:57:21,548 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-11 16:57:23,906 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-11 16:57:24,569 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 16:57:25,081 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-11 16:57:25,687 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-11 16:57:26,158 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-10-11 16:57:26,633 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-11 16:57:27,396 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-11 16:57:28,079 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-11 16:57:29,114 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-11 16:57:30,128 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-11 16:57:31,678 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 16:57:31,884 INFO L129 PetriNetUnfolder]: 272/2987 cut-off events. [2020-10-11 16:57:31,884 INFO L130 PetriNetUnfolder]: For 3894/3895 co-relation queries the response was YES. [2020-10-11 16:57:31,917 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7877 conditions, 2987 events. 272/2987 cut-off events. For 3894/3895 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 20366 event pairs, 9 based on Foata normal form. 3/2919 useless extension candidates. Maximal degree in co-relation 5624. Up to 237 conditions per place. [2020-10-11 16:57:31,930 INFO L132 encePairwiseOnDemand]: 105/138 looper letters, 69 selfloop transitions, 263 changer transitions 0/431 dead transitions. [2020-10-11 16:57:31,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 431 transitions, 3250 flow [2020-10-11 16:57:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-11 16:57:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-11 16:57:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6291 transitions. [2020-10-11 16:57:31,943 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6606805293005671 [2020-10-11 16:57:31,943 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6291 transitions. [2020-10-11 16:57:31,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6291 transitions. [2020-10-11 16:57:31,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:31,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6291 transitions. [2020-10-11 16:57:31,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 70 states. [2020-10-11 16:57:31,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 70 states. [2020-10-11 16:57:31,966 INFO L81 ComplementDD]: Finished complementDD. Result 70 states. [2020-10-11 16:57:31,966 INFO L185 Difference]: Start difference. First operand has 295 places, 290 transitions, 1764 flow. Second operand 69 states and 6291 transitions. [2020-10-11 16:57:31,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 431 transitions, 3250 flow [2020-10-11 16:57:32,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 431 transitions, 2994 flow, removed 119 selfloop flow, removed 9 redundant places. [2020-10-11 16:57:32,012 INFO L241 Difference]: Finished difference. Result has 370 places, 394 transitions, 2942 flow [2020-10-11 16:57:32,013 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=2942, PETRI_PLACES=370, PETRI_TRANSITIONS=394} [2020-10-11 16:57:32,013 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 248 predicate places. [2020-10-11 16:57:32,013 INFO L481 AbstractCegarLoop]: Abstraction has has 370 places, 394 transitions, 2942 flow [2020-10-11 16:57:32,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-11 16:57:32,013 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:32,014 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:32,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-11 16:57:32,215 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1459782741, now seen corresponding path program 2 times [2020-10-11 16:57:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:32,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159230443] [2020-10-11 16:57:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:57:32,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159230443] [2020-10-11 16:57:32,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644902423] [2020-10-11 16:57:32,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:32,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:57:32,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:57:32,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 16:57:32,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:57:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:57:32,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:57:32,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-11 16:57:32,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296414114] [2020-10-11 16:57:32,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 16:57:32,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:57:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 16:57:32,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:57:34,802 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 138 [2020-10-11 16:57:34,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 394 transitions, 2942 flow. Second operand 10 states. [2020-10-11 16:57:34,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:57:34,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 138 [2020-10-11 16:57:34,803 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:57:35,937 INFO L129 PetriNetUnfolder]: 172/3160 cut-off events. [2020-10-11 16:57:35,937 INFO L130 PetriNetUnfolder]: For 5467/5467 co-relation queries the response was YES. [2020-10-11 16:57:35,972 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 3160 events. 172/3160 cut-off events. For 5467/5467 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 22074 event pairs, 11 based on Foata normal form. 6/3091 useless extension candidates. Maximal degree in co-relation 5997. Up to 286 conditions per place. [2020-10-11 16:57:35,986 INFO L132 encePairwiseOnDemand]: 129/138 looper letters, 85 selfloop transitions, 66 changer transitions 0/444 dead transitions. [2020-10-11 16:57:35,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 444 transitions, 3670 flow [2020-10-11 16:57:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:57:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-11 16:57:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1692 transitions. [2020-10-11 16:57:35,995 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8757763975155279 [2020-10-11 16:57:35,995 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1692 transitions. [2020-10-11 16:57:35,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1692 transitions. [2020-10-11 16:57:35,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:35,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1692 transitions. [2020-10-11 16:57:35,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-11 16:57:36,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-11 16:57:36,000 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-11 16:57:36,000 INFO L185 Difference]: Start difference. First operand has 370 places, 394 transitions, 2942 flow. Second operand 14 states and 1692 transitions. [2020-10-11 16:57:36,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 444 transitions, 3670 flow [2020-10-11 16:57:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 444 transitions, 3392 flow, removed 58 selfloop flow, removed 12 redundant places. [2020-10-11 16:57:36,051 INFO L241 Difference]: Finished difference. Result has 377 places, 417 transitions, 3217 flow [2020-10-11 16:57:36,052 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3217, PETRI_PLACES=377, PETRI_TRANSITIONS=417} [2020-10-11 16:57:36,052 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 255 predicate places. [2020-10-11 16:57:36,052 INFO L481 AbstractCegarLoop]: Abstraction has has 377 places, 417 transitions, 3217 flow [2020-10-11 16:57:36,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 16:57:36,052 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:36,053 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:36,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:36,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:36,263 INFO L82 PathProgramCache]: Analyzing trace with hash -436928324, now seen corresponding path program 3 times [2020-10-11 16:57:36,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:36,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122786801] [2020-10-11 16:57:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:57:36,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122786801] [2020-10-11 16:57:36,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075848476] [2020-10-11 16:57:36,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:36,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:57:36,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:57:36,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 16:57:36,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:57:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:57:37,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:57:37,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-11 16:57:37,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865179000] [2020-10-11 16:57:37,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:57:37,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:57:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:57:37,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:57:38,833 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2020-10-11 16:57:38,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 417 transitions, 3217 flow. Second operand 11 states. [2020-10-11 16:57:38,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:57:38,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2020-10-11 16:57:38,834 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:57:39,948 INFO L129 PetriNetUnfolder]: 159/3210 cut-off events. [2020-10-11 16:57:39,948 INFO L130 PetriNetUnfolder]: For 6656/6657 co-relation queries the response was YES. [2020-10-11 16:57:39,976 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8446 conditions, 3210 events. 159/3210 cut-off events. For 6656/6657 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 22513 event pairs, 4 based on Foata normal form. 8/3143 useless extension candidates. Maximal degree in co-relation 6660. Up to 323 conditions per place. [2020-10-11 16:57:39,987 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 86 selfloop transitions, 56 changer transitions 0/452 dead transitions. [2020-10-11 16:57:39,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 452 transitions, 3815 flow [2020-10-11 16:57:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 16:57:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-11 16:57:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1860 transitions. [2020-10-11 16:57:39,994 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2020-10-11 16:57:39,994 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1860 transitions. [2020-10-11 16:57:39,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1860 transitions. [2020-10-11 16:57:39,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:39,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1860 transitions. [2020-10-11 16:57:39,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-10-11 16:57:39,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 16 states. [2020-10-11 16:57:39,998 INFO L81 ComplementDD]: Finished complementDD. Result 16 states. [2020-10-11 16:57:39,999 INFO L185 Difference]: Start difference. First operand has 377 places, 417 transitions, 3217 flow. Second operand 15 states and 1860 transitions. [2020-10-11 16:57:39,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 452 transitions, 3815 flow [2020-10-11 16:57:40,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 452 transitions, 3719 flow, removed 26 selfloop flow, removed 7 redundant places. [2020-10-11 16:57:40,051 INFO L241 Difference]: Finished difference. Result has 387 places, 433 transitions, 3502 flow [2020-10-11 16:57:40,052 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3502, PETRI_PLACES=387, PETRI_TRANSITIONS=433} [2020-10-11 16:57:40,052 INFO L341 CegarLoopForPetriNet]: 122 programPoint places, 265 predicate places. [2020-10-11 16:57:40,053 INFO L481 AbstractCegarLoop]: Abstraction has has 387 places, 433 transitions, 3502 flow [2020-10-11 16:57:40,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:57:40,053 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:40,053 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:40,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:57:40,264 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:40,265 INFO L82 PathProgramCache]: Analyzing trace with hash -140630916, now seen corresponding path program 1 times [2020-10-11 16:57:40,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:40,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110887150] [2020-10-11 16:57:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:40,485 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 104: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,486 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 105: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,488 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 106: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,489 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 107: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,491 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 108: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,497 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 109: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,498 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 110: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,499 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 111: A-local: [(|t1Thread1of1ForFork0_push_#t~ret35_43| Int), (t1Thread1of1ForFork0_push_~stack.offset_38 Int)], B-local: []. [2020-10-11 16:57:40,501 ERROR L253 erpolLogProxyWrapper]: Interpolant 112 not inductive [2020-10-11 16:57:40,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 16:57:40,536 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:507) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-11 16:57:40,540 INFO L168 Benchmark]: Toolchain (without parser) took 292564.84 ms. Allocated memory was 249.6 MB in the beginning and 760.7 MB in the end (delta: 511.2 MB). Free memory was 204.0 MB in the beginning and 713.5 MB in the end (delta: -509.4 MB). Peak memory consumption was 413.2 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:40,540 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:57:40,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1323.46 ms. Allocated memory was 249.6 MB in the beginning and 306.7 MB in the end (delta: 57.1 MB). Free memory was 204.0 MB in the beginning and 235.1 MB in the end (delta: -31.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:40,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.22 ms. Allocated memory is still 306.7 MB. Free memory was 235.1 MB in the beginning and 232.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:40,545 INFO L168 Benchmark]: Boogie Preprocessor took 43.67 ms. Allocated memory is still 306.7 MB. Free memory was 232.6 MB in the beginning and 230.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:40,545 INFO L168 Benchmark]: RCFGBuilder took 751.80 ms. Allocated memory is still 306.7 MB. Free memory was 230.1 MB in the beginning and 198.0 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:40,546 INFO L168 Benchmark]: TraceAbstraction took 290328.87 ms. Allocated memory was 306.7 MB in the beginning and 760.7 MB in the end (delta: 454.0 MB). Free memory was 198.0 MB in the beginning and 713.5 MB in the end (delta: -515.5 MB). Peak memory consumption was 350.0 MB. Max. memory is 14.2 GB. [2020-10-11 16:57:40,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1323.46 ms. Allocated memory was 249.6 MB in the beginning and 306.7 MB in the end (delta: 57.1 MB). Free memory was 204.0 MB in the beginning and 235.1 MB in the end (delta: -31.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 108.22 ms. Allocated memory is still 306.7 MB. Free memory was 235.1 MB in the beginning and 232.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 43.67 ms. Allocated memory is still 306.7 MB. Free memory was 232.6 MB in the beginning and 230.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 751.80 ms. Allocated memory is still 306.7 MB. Free memory was 230.1 MB in the beginning and 198.0 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 290328.87 ms. Allocated memory was 306.7 MB in the beginning and 760.7 MB in the end (delta: 454.0 MB). Free memory was 198.0 MB in the beginning and 713.5 MB in the end (delta: -515.5 MB). Peak memory consumption was 350.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...