/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:52:18,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:52:18,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:52:18,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:52:18,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:52:18,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:52:18,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:52:18,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:52:18,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:52:18,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:52:18,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:52:18,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:52:18,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:52:18,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:52:18,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:52:18,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:52:18,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:52:18,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:52:18,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:52:18,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:52:18,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:52:18,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:52:18,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:52:18,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:52:18,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:52:18,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:52:18,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:52:18,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:52:18,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:52:18,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:52:18,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:52:18,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:52:18,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:52:18,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:52:18,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:52:18,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:52:18,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:52:18,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:52:18,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:52:18,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:52:18,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:52:18,142 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 16:52:18,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:52:18,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:52:18,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:52:18,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:52:18,165 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:52:18,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:52:18,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:52:18,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:52:18,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:52:18,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:52:18,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:52:18,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:52:18,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:52:18,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:52:18,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:52:18,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:52:18,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:52:18,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:52:18,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:52:18,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:52:18,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:52:18,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:52:18,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:52:18,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:52:18,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:52:18,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:52:18,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:52:18,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 16:52:18,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 16:52:18,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:52:18,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:52:18,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:52:18,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:52:18,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:52:18,479 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:52:18,480 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2020-10-11 16:52:18,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae43aa47/317a3abb59f14c229af7ba4699d79af1/FLAGc73335879 [2020-10-11 16:52:19,073 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:52:19,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2020-10-11 16:52:19,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae43aa47/317a3abb59f14c229af7ba4699d79af1/FLAGc73335879 [2020-10-11 16:52:19,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae43aa47/317a3abb59f14c229af7ba4699d79af1 [2020-10-11 16:52:19,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:52:19,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:52:19,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:52:19,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:52:19,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:52:19,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:52:19" (1/1) ... [2020-10-11 16:52:19,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500c5f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:19, skipping insertion in model container [2020-10-11 16:52:19,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:52:19" (1/1) ... [2020-10-11 16:52:19,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:52:19,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:52:20,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:52:20,114 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:52:20,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:52:20,318 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:52:20,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20 WrapperNode [2020-10-11 16:52:20,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:52:20,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:52:20,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:52:20,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:52:20,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:52:20,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:52:20,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:52:20,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:52:20,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (1/1) ... [2020-10-11 16:52:20,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:52:20,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:52:20,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:52:20,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:52:20,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (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 16:52:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-11 16:52:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-11 16:52:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-11 16:52:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-11 16:52:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:52:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:52:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:52:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:52:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 16:52:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 16:52:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:52:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:52:20,502 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 16:52:20,965 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:52:20,966 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-11 16:52:20,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:52:20 BoogieIcfgContainer [2020-10-11 16:52:20,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:52:20,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:52:20,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:52:20,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:52:20,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:52:19" (1/3) ... [2020-10-11 16:52:20,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20685490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:52:20, skipping insertion in model container [2020-10-11 16:52:20,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:52:20" (2/3) ... [2020-10-11 16:52:20,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20685490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:52:20, skipping insertion in model container [2020-10-11 16:52:20,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:52:20" (3/3) ... [2020-10-11 16:52:20,978 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-2.i [2020-10-11 16:52:20,990 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:52:20,999 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 16:52:21,000 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:52:21,036 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,036 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,040 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,040 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,044 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,050 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,050 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,050 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,052 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,054 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,054 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,055 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,055 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,055 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,056 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,056 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,056 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,058 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,058 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,058 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,058 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,059 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,059 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,059 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,059 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,059 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,060 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,060 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,060 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,060 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,061 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,061 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,061 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,061 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,062 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,062 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,062 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,062 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,063 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,063 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,063 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,063 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,063 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,064 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,064 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,064 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,073 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,074 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,074 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,076 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,076 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,077 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,077 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,077 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,077 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,079 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,087 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,087 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,089 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,089 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,089 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,089 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,090 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,090 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,090 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,090 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:52:21,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 16:52:21,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:52:21,137 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 16:52:21,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:52:21,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:52:21,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:52:21,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:52:21,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:52:21,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:52:21,155 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 144 places, 149 transitions, 320 flow [2020-10-11 16:52:21,262 INFO L129 PetriNetUnfolder]: 11/149 cut-off events. [2020-10-11 16:52:21,262 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:52:21,276 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 149 events. 11/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-10-11 16:52:21,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 149 transitions, 320 flow [2020-10-11 16:52:21,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 137 transitions, 286 flow [2020-10-11 16:52:21,357 INFO L129 PetriNetUnfolder]: 6/118 cut-off events. [2020-10-11 16:52:21,357 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 16:52:21,357 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:21,358 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:21,359 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 16:52:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash 290822711, now seen corresponding path program 1 times [2020-10-11 16:52:21,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:21,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214639897] [2020-10-11 16:52:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:21,732 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 16:52:21,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214639897] [2020-10-11 16:52:21,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:21,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:21,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607668585] [2020-10-11 16:52:21,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:21,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:21,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:21,837 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 149 [2020-10-11 16:52:21,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 286 flow. Second operand 3 states. [2020-10-11 16:52:21,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:21,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 149 [2020-10-11 16:52:21,841 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:21,907 INFO L129 PetriNetUnfolder]: 14/258 cut-off events. [2020-10-11 16:52:21,907 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-11 16:52:21,912 INFO L80 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 258 events. 14/258 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 679 event pairs, 0 based on Foata normal form. 23/263 useless extension candidates. Maximal degree in co-relation 240. Up to 14 conditions per place. [2020-10-11 16:52:21,915 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 3 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2020-10-11 16:52:21,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 134 transitions, 292 flow [2020-10-11 16:52:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2020-10-11 16:52:21,932 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9753914988814317 [2020-10-11 16:52:21,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2020-10-11 16:52:21,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2020-10-11 16:52:21,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:21,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2020-10-11 16:52:21,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:21,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:21,952 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:21,954 INFO L185 Difference]: Start difference. First operand has 133 places, 137 transitions, 286 flow. Second operand 3 states and 436 transitions. [2020-10-11 16:52:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 134 transitions, 292 flow [2020-10-11 16:52:21,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 16:52:21,964 INFO L241 Difference]: Finished difference. Result has 132 places, 134 transitions, 287 flow [2020-10-11 16:52:21,967 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=132, PETRI_TRANSITIONS=134} [2020-10-11 16:52:21,968 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, -1 predicate places. [2020-10-11 16:52:21,969 INFO L481 AbstractCegarLoop]: Abstraction has has 132 places, 134 transitions, 287 flow [2020-10-11 16:52:21,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:21,969 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:21,969 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:21,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:52:21,970 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 16:52:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1656084646, now seen corresponding path program 1 times [2020-10-11 16:52:21,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:21,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368994843] [2020-10-11 16:52:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:22,108 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 16:52:22,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368994843] [2020-10-11 16:52:22,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:22,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:22,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634218901] [2020-10-11 16:52:22,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:22,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:22,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:22,133 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 149 [2020-10-11 16:52:22,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 134 transitions, 287 flow. Second operand 3 states. [2020-10-11 16:52:22,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:22,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 149 [2020-10-11 16:52:22,134 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:22,201 INFO L129 PetriNetUnfolder]: 16/292 cut-off events. [2020-10-11 16:52:22,202 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 16:52:22,205 INFO L80 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 292 events. 16/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 564 event pairs, 2 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 262. Up to 11 conditions per place. [2020-10-11 16:52:22,207 INFO L132 encePairwiseOnDemand]: 146/149 looper letters, 2 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2020-10-11 16:52:22,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 292 flow [2020-10-11 16:52:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2020-10-11 16:52:22,212 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9574944071588367 [2020-10-11 16:52:22,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2020-10-11 16:52:22,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2020-10-11 16:52:22,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:22,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2020-10-11 16:52:22,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:22,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:22,219 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:22,219 INFO L185 Difference]: Start difference. First operand has 132 places, 134 transitions, 287 flow. Second operand 3 states and 428 transitions. [2020-10-11 16:52:22,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 292 flow [2020-10-11 16:52:22,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:22,230 INFO L241 Difference]: Finished difference. Result has 134 places, 134 transitions, 292 flow [2020-10-11 16:52:22,231 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=134, PETRI_TRANSITIONS=134} [2020-10-11 16:52:22,231 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 1 predicate places. [2020-10-11 16:52:22,232 INFO L481 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 292 flow [2020-10-11 16:52:22,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:22,232 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:22,233 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] [2020-10-11 16:52:22,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:52:22,233 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 16:52:22,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:22,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1769673693, now seen corresponding path program 1 times [2020-10-11 16:52:22,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:22,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634834153] [2020-10-11 16:52:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:22,368 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 16:52:22,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634834153] [2020-10-11 16:52:22,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:22,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:52:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580675226] [2020-10-11 16:52:22,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 16:52:22,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:22,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 16:52:22,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 16:52:22,425 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 149 [2020-10-11 16:52:22,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 292 flow. Second operand 4 states. [2020-10-11 16:52:22,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:22,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 149 [2020-10-11 16:52:22,426 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:22,507 INFO L129 PetriNetUnfolder]: 21/367 cut-off events. [2020-10-11 16:52:22,508 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 16:52:22,510 INFO L80 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 367 events. 21/367 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 944 event pairs, 3 based on Foata normal form. 2/346 useless extension candidates. Maximal degree in co-relation 351. Up to 14 conditions per place. [2020-10-11 16:52:22,512 INFO L132 encePairwiseOnDemand]: 144/149 looper letters, 7 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2020-10-11 16:52:22,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 137 transitions, 320 flow [2020-10-11 16:52:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 16:52:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-11 16:52:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2020-10-11 16:52:22,515 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9328859060402684 [2020-10-11 16:52:22,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2020-10-11 16:52:22,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2020-10-11 16:52:22,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:22,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2020-10-11 16:52:22,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-11 16:52:22,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-11 16:52:22,519 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-11 16:52:22,519 INFO L185 Difference]: Start difference. First operand has 134 places, 134 transitions, 292 flow. Second operand 4 states and 556 transitions. [2020-10-11 16:52:22,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 137 transitions, 320 flow [2020-10-11 16:52:22,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 137 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:22,524 INFO L241 Difference]: Finished difference. Result has 138 places, 137 transitions, 318 flow [2020-10-11 16:52:22,525 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2020-10-11 16:52:22,525 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 5 predicate places. [2020-10-11 16:52:22,525 INFO L481 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 318 flow [2020-10-11 16:52:22,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 16:52:22,525 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:22,526 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] [2020-10-11 16:52:22,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:52:22,526 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 16:52:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:22,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1400796939, now seen corresponding path program 1 times [2020-10-11 16:52:22,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:22,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577562703] [2020-10-11 16:52:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:22,673 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 16:52:22,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577562703] [2020-10-11 16:52:22,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367050923] [2020-10-11 16:52:22,675 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 16:52:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:22,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 16:52:22,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:52:22,926 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 16:52:22,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:52:22,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-11 16:52:22,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388476514] [2020-10-11 16:52:22,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:52:22,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:52:22,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:52:23,245 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 149 [2020-10-11 16:52:23,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 318 flow. Second operand 7 states. [2020-10-11 16:52:23,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:23,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 149 [2020-10-11 16:52:23,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:23,356 INFO L129 PetriNetUnfolder]: 32/416 cut-off events. [2020-10-11 16:52:23,357 INFO L130 PetriNetUnfolder]: For 26/38 co-relation queries the response was YES. [2020-10-11 16:52:23,360 INFO L80 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 416 events. 32/416 cut-off events. For 26/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1230 event pairs, 2 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 476. Up to 35 conditions per place. [2020-10-11 16:52:23,362 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 10 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2020-10-11 16:52:23,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 368 flow [2020-10-11 16:52:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:52:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 16:52:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 833 transitions. [2020-10-11 16:52:23,366 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9317673378076062 [2020-10-11 16:52:23,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 833 transitions. [2020-10-11 16:52:23,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 833 transitions. [2020-10-11 16:52:23,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:23,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 833 transitions. [2020-10-11 16:52:23,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 16:52:23,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 16:52:23,371 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 16:52:23,371 INFO L185 Difference]: Start difference. First operand has 138 places, 137 transitions, 318 flow. Second operand 6 states and 833 transitions. [2020-10-11 16:52:23,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 368 flow [2020-10-11 16:52:23,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:23,376 INFO L241 Difference]: Finished difference. Result has 145 places, 141 transitions, 357 flow [2020-10-11 16:52:23,377 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2020-10-11 16:52:23,377 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 12 predicate places. [2020-10-11 16:52:23,377 INFO L481 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 357 flow [2020-10-11 16:52:23,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:52:23,377 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:23,377 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] [2020-10-11 16:52:23,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:52:23,593 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 16:52:23,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:23,594 INFO L82 PathProgramCache]: Analyzing trace with hash -85052694, now seen corresponding path program 1 times [2020-10-11 16:52:23,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:23,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682282560] [2020-10-11 16:52:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:23,702 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 16:52:23,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682282560] [2020-10-11 16:52:23,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:23,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:52:23,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368795362] [2020-10-11 16:52:23,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:52:23,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:23,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:52:23,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:52:23,769 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 149 [2020-10-11 16:52:23,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 357 flow. Second operand 3 states. [2020-10-11 16:52:23,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:23,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 149 [2020-10-11 16:52:23,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:23,848 INFO L129 PetriNetUnfolder]: 16/448 cut-off events. [2020-10-11 16:52:23,848 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-11 16:52:23,850 INFO L80 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 448 events. 16/448 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1199 event pairs, 1 based on Foata normal form. 10/436 useless extension candidates. Maximal degree in co-relation 499. Up to 15 conditions per place. [2020-10-11 16:52:23,851 INFO L132 encePairwiseOnDemand]: 145/149 looper letters, 2 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2020-10-11 16:52:23,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 141 transitions, 369 flow [2020-10-11 16:52:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:52:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 16:52:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2020-10-11 16:52:23,853 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9440715883668904 [2020-10-11 16:52:23,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2020-10-11 16:52:23,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2020-10-11 16:52:23,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:23,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2020-10-11 16:52:23,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 16:52:23,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 16:52:23,856 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 16:52:23,857 INFO L185 Difference]: Start difference. First operand has 145 places, 141 transitions, 357 flow. Second operand 3 states and 422 transitions. [2020-10-11 16:52:23,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 141 transitions, 369 flow [2020-10-11 16:52:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 141 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-11 16:52:23,865 INFO L241 Difference]: Finished difference. Result has 145 places, 141 transitions, 354 flow [2020-10-11 16:52:23,868 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2020-10-11 16:52:23,869 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 12 predicate places. [2020-10-11 16:52:23,869 INFO L481 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 354 flow [2020-10-11 16:52:23,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:52:23,869 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:23,870 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 16:52:23,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 16:52:23,870 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 16:52:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:23,870 INFO L82 PathProgramCache]: Analyzing trace with hash -993566235, now seen corresponding path program 1 times [2020-10-11 16:52:23,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:23,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140820964] [2020-10-11 16:52:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:24,107 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 16:52:24,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140820964] [2020-10-11 16:52:24,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:24,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:52:24,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263137633] [2020-10-11 16:52:24,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:52:24,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:24,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:52:24,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:52:24,532 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 149 [2020-10-11 16:52:24,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 354 flow. Second operand 7 states. [2020-10-11 16:52:24,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:52:24,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 149 [2020-10-11 16:52:24,533 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:52:24,722 INFO L129 PetriNetUnfolder]: 36/659 cut-off events. [2020-10-11 16:52:24,722 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2020-10-11 16:52:24,725 INFO L80 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 659 events. 36/659 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2158 event pairs, 2 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 539. Up to 45 conditions per place. [2020-10-11 16:52:24,729 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 26 selfloop transitions, 13 changer transitions 0/157 dead transitions. [2020-10-11 16:52:24,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 157 transitions, 480 flow [2020-10-11 16:52:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 16:52:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 16:52:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1172 transitions. [2020-10-11 16:52:24,735 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8739746457867263 [2020-10-11 16:52:24,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1172 transitions. [2020-10-11 16:52:24,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1172 transitions. [2020-10-11 16:52:24,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:52:24,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1172 transitions. [2020-10-11 16:52:24,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 16:52:24,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 16:52:24,742 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 16:52:24,742 INFO L185 Difference]: Start difference. First operand has 145 places, 141 transitions, 354 flow. Second operand 9 states and 1172 transitions. [2020-10-11 16:52:24,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 157 transitions, 480 flow [2020-10-11 16:52:24,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 16:52:24,749 INFO L241 Difference]: Finished difference. Result has 157 places, 148 transitions, 436 flow [2020-10-11 16:52:24,750 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=436, PETRI_PLACES=157, PETRI_TRANSITIONS=148} [2020-10-11 16:52:24,750 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 24 predicate places. [2020-10-11 16:52:24,750 INFO L481 AbstractCegarLoop]: Abstraction has has 157 places, 148 transitions, 436 flow [2020-10-11 16:52:24,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:52:24,751 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:52:24,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:52:24,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:52:24,752 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 16:52:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:52:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash 161723603, now seen corresponding path program 1 times [2020-10-11 16:52:24,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:52:24,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427154621] [2020-10-11 16:52:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:52:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:52:26,084 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 16:52:26,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427154621] [2020-10-11 16:52:26,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:52:26,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-10-11 16:52:26,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848404107] [2020-10-11 16:52:26,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 16:52:26,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:52:26,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 16:52:26,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2020-10-11 16:53:03,694 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 149 [2020-10-11 16:53:03,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 148 transitions, 436 flow. Second operand 27 states. [2020-10-11 16:53:03,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:03,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 149 [2020-10-11 16:53:03,698 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:05,812 INFO L129 PetriNetUnfolder]: 154/1163 cut-off events. [2020-10-11 16:53:05,812 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2020-10-11 16:53:05,817 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 1163 events. 154/1163 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5197 event pairs, 7 based on Foata normal form. 3/1121 useless extension candidates. Maximal degree in co-relation 1571. Up to 272 conditions per place. [2020-10-11 16:53:05,825 INFO L132 encePairwiseOnDemand]: 117/149 looper letters, 145 selfloop transitions, 37 changer transitions 5/276 dead transitions. [2020-10-11 16:53:05,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 276 transitions, 1139 flow [2020-10-11 16:53:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-11 16:53:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-11 16:53:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3094 transitions. [2020-10-11 16:53:05,836 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6489093959731543 [2020-10-11 16:53:05,836 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3094 transitions. [2020-10-11 16:53:05,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3094 transitions. [2020-10-11 16:53:05,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:05,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3094 transitions. [2020-10-11 16:53:05,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 33 states. [2020-10-11 16:53:05,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 33 states. [2020-10-11 16:53:05,853 INFO L81 ComplementDD]: Finished complementDD. Result 33 states. [2020-10-11 16:53:05,853 INFO L185 Difference]: Start difference. First operand has 157 places, 148 transitions, 436 flow. Second operand 32 states and 3094 transitions. [2020-10-11 16:53:05,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 276 transitions, 1139 flow [2020-10-11 16:53:05,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 276 transitions, 1133 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 16:53:05,864 INFO L241 Difference]: Finished difference. Result has 207 places, 177 transitions, 689 flow [2020-10-11 16:53:05,865 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=689, PETRI_PLACES=207, PETRI_TRANSITIONS=177} [2020-10-11 16:53:05,865 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 74 predicate places. [2020-10-11 16:53:05,865 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 177 transitions, 689 flow [2020-10-11 16:53:05,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 16:53:05,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:05,866 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, 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] [2020-10-11 16:53:05,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 16:53:05,866 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 16:53:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1228230281, now seen corresponding path program 2 times [2020-10-11 16:53:05,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:05,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585325120] [2020-10-11 16:53:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:53:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:06,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585325120] [2020-10-11 16:53:06,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547568033] [2020-10-11 16:53:06,010 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 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 16:53:06,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:53:06,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:53:06,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:53:06,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:53:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:53:06,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:53:06,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-11 16:53:06,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069952577] [2020-10-11 16:53:06,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:53:06,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:53:06,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:53:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:53:06,561 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 149 [2020-10-11 16:53:06,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 177 transitions, 689 flow. Second operand 9 states. [2020-10-11 16:53:06,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:53:06,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 149 [2020-10-11 16:53:06,562 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:53:06,764 INFO L129 PetriNetUnfolder]: 33/840 cut-off events. [2020-10-11 16:53:06,764 INFO L130 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2020-10-11 16:53:06,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 840 events. 33/840 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3043 event pairs, 2 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 1307. Up to 42 conditions per place. [2020-10-11 16:53:06,773 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 17 selfloop transitions, 10 changer transitions 0/185 dead transitions. [2020-10-11 16:53:06,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 185 transitions, 781 flow [2020-10-11 16:53:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 16:53:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 16:53:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1246 transitions. [2020-10-11 16:53:06,778 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9291573452647278 [2020-10-11 16:53:06,778 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1246 transitions. [2020-10-11 16:53:06,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1246 transitions. [2020-10-11 16:53:06,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:53:06,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1246 transitions. [2020-10-11 16:53:06,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 16:53:06,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 16:53:06,785 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 16:53:06,785 INFO L185 Difference]: Start difference. First operand has 207 places, 177 transitions, 689 flow. Second operand 9 states and 1246 transitions. [2020-10-11 16:53:06,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 185 transitions, 781 flow [2020-10-11 16:53:06,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 185 transitions, 757 flow, removed 6 selfloop flow, removed 6 redundant places. [2020-10-11 16:53:06,793 INFO L241 Difference]: Finished difference. Result has 212 places, 181 transitions, 731 flow [2020-10-11 16:53:06,793 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2020-10-11 16:53:06,794 INFO L341 CegarLoopForPetriNet]: 133 programPoint places, 79 predicate places. [2020-10-11 16:53:06,794 INFO L481 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 731 flow [2020-10-11 16:53:06,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:53:06,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:53:06,794 INFO L255 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:53:07,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:53:07,010 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 16:53:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:53:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1402365415, now seen corresponding path program 1 times [2020-10-11 16:53:07,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:53:07,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554043198] [2020-10-11 16:53:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:53:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:53:07,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:53:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:53:07,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:53:07,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 16:53:07,136 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 16:53:07,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 16:53:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:53:07 BasicIcfg [2020-10-11 16:53:07,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:53:07,268 INFO L168 Benchmark]: Toolchain (without parser) took 47960.59 ms. Allocated memory was 252.2 MB in the beginning and 716.2 MB in the end (delta: 464.0 MB). Free memory was 205.4 MB in the beginning and 445.0 MB in the end (delta: -239.6 MB). Peak memory consumption was 224.4 MB. Max. memory is 14.2 GB. [2020-10-11 16:53:07,269 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:53:07,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1007.60 ms. Allocated memory was 252.2 MB in the beginning and 315.6 MB in the end (delta: 63.4 MB). Free memory was 205.4 MB in the beginning and 243.7 MB in the end (delta: -38.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 14.2 GB. [2020-10-11 16:53:07,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.46 ms. Allocated memory is still 315.6 MB. Free memory was 243.7 MB in the beginning and 241.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:53:07,271 INFO L168 Benchmark]: Boogie Preprocessor took 43.38 ms. Allocated memory is still 315.6 MB. Free memory was 241.1 MB in the beginning and 238.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:53:07,272 INFO L168 Benchmark]: RCFGBuilder took 543.09 ms. Allocated memory is still 315.6 MB. Free memory was 238.6 MB in the beginning and 204.2 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 14.2 GB. [2020-10-11 16:53:07,273 INFO L168 Benchmark]: TraceAbstraction took 46296.41 ms. Allocated memory was 315.6 MB in the beginning and 716.2 MB in the end (delta: 400.6 MB). Free memory was 204.2 MB in the beginning and 445.0 MB in the end (delta: -240.8 MB). Peak memory consumption was 159.7 MB. Max. memory is 14.2 GB. [2020-10-11 16:53:07,277 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1007.60 ms. Allocated memory was 252.2 MB in the beginning and 315.6 MB in the end (delta: 63.4 MB). Free memory was 205.4 MB in the beginning and 243.7 MB in the end (delta: -38.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 61.46 ms. Allocated memory is still 315.6 MB. Free memory was 243.7 MB in the beginning and 241.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 43.38 ms. Allocated memory is still 315.6 MB. Free memory was 241.1 MB in the beginning and 238.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 543.09 ms. Allocated memory is still 315.6 MB. Free memory was 238.6 MB in the beginning and 204.2 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 46296.41 ms. Allocated memory was 315.6 MB in the beginning and 716.2 MB in the end (delta: 400.6 MB). Free memory was 204.2 MB in the beginning and 445.0 MB in the end (delta: -240.8 MB). Peak memory consumption was 159.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 922]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L916] 0 static int top=0; VAL [top=0] [L917] 0 static unsigned int arr[(5)]; VAL [arr={7:0}, top=0] [L918] 0 pthread_mutex_t m; VAL [arr={7:0}, m={9:0}, top=0] [L919] 0 _Bool flag=(0); VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L1002] 0 pthread_t id1, id2; VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L1004] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L971] 1 int i; VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L972] 1 unsigned int tmp; VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L973] 1 i=0 VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L973] COND TRUE 1 i<(5) VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L976] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L4] COND FALSE 1 !(!cond) VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L943] COND FALSE 1 !(top==(5)) VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L935] 1 return top; VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L950] 1 stack[get_top()] = x VAL [arr={7:0}, flag=0, m={9:0}, top=0] [L927] 1 top++ VAL [arr={7:0}, flag=0, m={9:0}, top=1] [L953] 1 return 0; VAL [arr={7:0}, flag=0, m={9:0}, top=1] [L978] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={7:0}, flag=0, m={9:0}, top=1] [L980] 1 flag=(1) VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L1005] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L987] 2 int i; VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L988] 2 i=0 VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L988] COND TRUE 2 i<(5) VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L991] COND TRUE 2 \read(flag) VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L935] 2 return top; VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L957] COND FALSE 2 !(get_top()==0) VAL [arr={7:0}, flag=1, m={9:0}, top=1] [L931] 2 top-- VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L935] 2 return top; VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L965] EXPR 2 stack[get_top()] VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L965] 2 return stack[get_top()]; VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L993] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L988] 2 i++ VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L988] COND TRUE 2 i<(5) VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L991] COND TRUE 2 \read(flag) VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L935] 2 return top; VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L957] COND TRUE 2 get_top()==0 VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L960] 2 return (-2); VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L993] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arr={7:0}, flag=1, m={9:0}, top=0] [L922] 2 __VERIFIER_error() VAL [arr={7:0}, flag=1, m={9:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 138 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 46.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 839 SDtfs, 1340 SDslu, 8661 SDs, 0 SdLazy, 7931 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=731occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 983 NumberOfCodeBlocks, 983 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 850 ConstructedInterpolants, 0 QuantifiedInterpolants, 380732 SizeOfPredicates, 8 NumberOfNonLiveVariables, 468 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 18/178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...