/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:39:13,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:39:13,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:39:13,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:39:13,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:39:13,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:39:13,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:39:13,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:39:13,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:39:13,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:39:13,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:39:13,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:39:13,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:39:13,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:39:13,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:39:13,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:39:13,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:39:13,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:39:13,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:39:13,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:39:13,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:39:13,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:39:13,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:39:13,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:39:13,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:39:13,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:39:13,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:39:13,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:39:13,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:39:13,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:39:13,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:39:13,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:39:13,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:39:13,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:39:13,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:39:13,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:39:13,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:39:13,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:39:13,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:39:13,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:39:13,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:39:13,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:39:13,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:39:13,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:39:13,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:39:13,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:39:13,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:39:13,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:39:13,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:39:13,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:39:13,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:39:13,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:39:13,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:39:13,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:39:13,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:39:13,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:39:13,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:39:13,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:39:13,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:39:13,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:39:13,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:39:13,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:39:13,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:39:13,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:39:13,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:39:13,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:39:13,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:39:13,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:39:13,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:39:13,395 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:39:13,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:39:13,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:39:13,395 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:39:13,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:39:13,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:39:13,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:39:13,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:39:13,696 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:39:13,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2020-10-22 02:39:13,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac4f641a/cf8dfbe28f674836a5db82f89fce2e32/FLAGbe87819d6 [2020-10-22 02:39:14,375 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:39:14,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2020-10-22 02:39:14,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac4f641a/cf8dfbe28f674836a5db82f89fce2e32/FLAGbe87819d6 [2020-10-22 02:39:14,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac4f641a/cf8dfbe28f674836a5db82f89fce2e32 [2020-10-22 02:39:14,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:39:14,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:39:14,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:39:14,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:39:14,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:39:14,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:39:14" (1/1) ... [2020-10-22 02:39:14,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca83d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:14, skipping insertion in model container [2020-10-22 02:39:14,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:39:14" (1/1) ... [2020-10-22 02:39:14,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:39:14,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:39:15,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:39:15,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:39:15,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:39:15,273 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:39:15,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15 WrapperNode [2020-10-22 02:39:15,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:39:15,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:39:15,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:39:15,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:39:15,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:39:15,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:39:15,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:39:15,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:39:15,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (1/1) ... [2020-10-22 02:39:15,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:39:15,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:39:15,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:39:15,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:39:15,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (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 [2020-10-22 02:39:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 02:39:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:39:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-22 02:39:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:39:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2020-10-22 02:39:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2020-10-22 02:39:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:39:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:39:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:39:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:39:15,436 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:39:15,882 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:39:15,882 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-22 02:39:15,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:39:15 BoogieIcfgContainer [2020-10-22 02:39:15,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:39:15,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:39:15,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:39:15,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:39:15,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:39:14" (1/3) ... [2020-10-22 02:39:15,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ca4f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:39:15, skipping insertion in model container [2020-10-22 02:39:15,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:39:15" (2/3) ... [2020-10-22 02:39:15,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ca4f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:39:15, skipping insertion in model container [2020-10-22 02:39:15,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:39:15" (3/3) ... [2020-10-22 02:39:15,901 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2020-10-22 02:39:15,916 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:39:15,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:39:15,926 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:39:15,928 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:39:15,962 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,962 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,963 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,963 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,964 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,964 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,964 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,965 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,965 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,965 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,966 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,966 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,966 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,966 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,967 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,967 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,967 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,967 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,969 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,969 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,969 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,970 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,974 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,974 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,974 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,974 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,975 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,975 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,975 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,975 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,975 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,976 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:15,983 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-22 02:39:15,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 02:39:16,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:39:16,019 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:39:16,019 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:39:16,019 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:39:16,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:39:16,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:39:16,020 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:39:16,020 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:39:16,036 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:39:16,037 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 111 transitions, 230 flow [2020-10-22 02:39:16,040 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 111 transitions, 230 flow [2020-10-22 02:39:16,042 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 111 transitions, 230 flow [2020-10-22 02:39:16,118 INFO L129 PetriNetUnfolder]: 19/149 cut-off events. [2020-10-22 02:39:16,119 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-22 02:39:16,127 INFO L80 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 149 events. 19/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 401 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2020-10-22 02:39:16,132 INFO L116 LiptonReduction]: Number of co-enabled transitions 2838 [2020-10-22 02:39:17,912 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-22 02:39:18,517 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2020-10-22 02:39:18,724 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-22 02:39:18,948 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-22 02:39:19,174 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-22 02:39:19,840 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2020-10-22 02:39:20,132 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-22 02:39:20,143 INFO L131 LiptonReduction]: Checked pairs total: 5602 [2020-10-22 02:39:20,144 INFO L133 LiptonReduction]: Total number of compositions: 99 [2020-10-22 02:39:20,151 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 34 transitions, 76 flow [2020-10-22 02:39:20,168 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 156 states. [2020-10-22 02:39:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-10-22 02:39:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 02:39:20,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:20,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 02:39:20,178 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 13558008, now seen corresponding path program 1 times [2020-10-22 02:39:20,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:20,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734545003] [2020-10-22 02:39:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:20,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734545003] [2020-10-22 02:39:20,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:39:20,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:39:20,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [7049801] [2020-10-22 02:39:20,413 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:39:20,416 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:39:20,429 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 02:39:20,429 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:39:20,434 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:39:20,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:39:20,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:39:20,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:39:20,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:39:20,452 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-10-22 02:39:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:39:20,487 INFO L93 Difference]: Finished difference Result 151 states and 271 transitions. [2020-10-22 02:39:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:39:20,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 02:39:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:39:20,496 INFO L225 Difference]: With dead ends: 151 [2020-10-22 02:39:20,497 INFO L226 Difference]: Without dead ends: 87 [2020-10-22 02:39:20,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:39:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-22 02:39:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-22 02:39:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-22 02:39:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 152 transitions. [2020-10-22 02:39:20,540 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 152 transitions. Word has length 4 [2020-10-22 02:39:20,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:39:20,540 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 152 transitions. [2020-10-22 02:39:20,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:39:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 152 transitions. [2020-10-22 02:39:20,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 02:39:20,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:20,541 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-22 02:39:20,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:39:20,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 135333248, now seen corresponding path program 1 times [2020-10-22 02:39:20,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:20,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665019255] [2020-10-22 02:39:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:39:20,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:39:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:39:20,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:39:20,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:39:20,649 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:39:20,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:39:20,652 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:39:20,653 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-22 02:39:20,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,663 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,663 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,664 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,664 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,664 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,664 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,664 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,667 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,667 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,667 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,667 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,667 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,667 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,668 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,668 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,669 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,669 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,669 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,669 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,669 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,670 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,670 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,670 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,670 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,671 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,671 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,671 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,671 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,671 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,672 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,672 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,672 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,672 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,672 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,673 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,673 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,673 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,674 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,674 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,674 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,674 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,674 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,674 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,675 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,675 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,675 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,675 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,675 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,675 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,677 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,677 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,678 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,678 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,678 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,678 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,678 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,679 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,679 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,679 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,679 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,679 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:20,682 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-10-22 02:39:20,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 02:39:20,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:39:20,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:39:20,683 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:39:20,683 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:39:20,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:39:20,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:39:20,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:39:20,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:39:20,687 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:39:20,687 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 146 transitions, 310 flow [2020-10-22 02:39:20,687 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 146 transitions, 310 flow [2020-10-22 02:39:20,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 131 places, 146 transitions, 310 flow [2020-10-22 02:39:20,743 INFO L129 PetriNetUnfolder]: 34/245 cut-off events. [2020-10-22 02:39:20,744 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-22 02:39:20,748 INFO L80 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 245 events. 34/245 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 845 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2020-10-22 02:39:20,763 INFO L116 LiptonReduction]: Number of co-enabled transitions 8580 [2020-10-22 02:39:22,674 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-22 02:39:23,180 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-10-22 02:39:23,376 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-22 02:39:24,083 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2020-10-22 02:39:24,370 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-22 02:39:24,392 INFO L131 LiptonReduction]: Checked pairs total: 17680 [2020-10-22 02:39:24,393 INFO L133 LiptonReduction]: Total number of compositions: 116 [2020-10-22 02:39:24,393 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 56 transitions, 130 flow [2020-10-22 02:39:24,495 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2113 states. [2020-10-22 02:39:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states. [2020-10-22 02:39:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 02:39:24,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:24,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 02:39:24,497 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:24,497 INFO L82 PathProgramCache]: Analyzing trace with hash 22699245, now seen corresponding path program 1 times [2020-10-22 02:39:24,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:24,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140213720] [2020-10-22 02:39:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:24,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140213720] [2020-10-22 02:39:24,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:39:24,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:39:24,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2019278778] [2020-10-22 02:39:24,548 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:39:24,548 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:39:24,549 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 02:39:24,550 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:39:24,550 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:39:24,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:39:24,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:39:24,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:39:24,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:39:24,551 INFO L87 Difference]: Start difference. First operand 2113 states. Second operand 3 states. [2020-10-22 02:39:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:39:24,631 INFO L93 Difference]: Finished difference Result 2108 states and 5618 transitions. [2020-10-22 02:39:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:39:24,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 02:39:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:39:24,655 INFO L225 Difference]: With dead ends: 2108 [2020-10-22 02:39:24,656 INFO L226 Difference]: Without dead ends: 1239 [2020-10-22 02:39:24,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:39:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-22 02:39:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2020-10-22 02:39:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-22 02:39:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3284 transitions. [2020-10-22 02:39:24,756 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3284 transitions. Word has length 4 [2020-10-22 02:39:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:39:24,757 INFO L481 AbstractCegarLoop]: Abstraction has 1239 states and 3284 transitions. [2020-10-22 02:39:24,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:39:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3284 transitions. [2020-10-22 02:39:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:39:24,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:24,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:39:24,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:39:24,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:24,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1414948173, now seen corresponding path program 1 times [2020-10-22 02:39:24,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:24,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595613654] [2020-10-22 02:39:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:24,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595613654] [2020-10-22 02:39:24,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020260156] [2020-10-22 02:39:24,808 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 [2020-10-22 02:39:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:24,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-22 02:39:24,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:39:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:24,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:39:24,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-22 02:39:24,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [246694501] [2020-10-22 02:39:24,915 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:39:24,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:39:24,917 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:39:24,917 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:39:24,918 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:39:24,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:39:24,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:39:24,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:39:24,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:39:24,919 INFO L87 Difference]: Start difference. First operand 1239 states and 3284 transitions. Second operand 4 states. [2020-10-22 02:39:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:39:24,954 INFO L93 Difference]: Finished difference Result 1203 states and 3215 transitions. [2020-10-22 02:39:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:39:24,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-22 02:39:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:39:24,962 INFO L225 Difference]: With dead ends: 1203 [2020-10-22 02:39:24,962 INFO L226 Difference]: Without dead ends: 1203 [2020-10-22 02:39:24,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:39:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-10-22 02:39:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-10-22 02:39:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-22 02:39:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3215 transitions. [2020-10-22 02:39:24,997 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3215 transitions. Word has length 8 [2020-10-22 02:39:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:39:24,997 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 3215 transitions. [2020-10-22 02:39:24,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:39:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3215 transitions. [2020-10-22 02:39:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:39:24,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:24,999 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-22 02:39:25,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:39:25,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:25,215 INFO L82 PathProgramCache]: Analyzing trace with hash 312296501, now seen corresponding path program 1 times [2020-10-22 02:39:25,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:25,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105310991] [2020-10-22 02:39:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:39:25,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:39:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:39:25,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:39:25,303 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:39:25,304 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:39:25,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:39:25,305 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:39:25,306 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-22 02:39:25,315 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,315 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,315 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,315 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,317 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,317 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,317 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,317 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,317 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,317 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,318 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,318 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,318 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,318 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,318 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,319 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,319 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,319 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,319 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,319 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,320 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,320 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,320 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,320 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,321 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,321 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,321 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,321 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,321 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,322 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,322 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,322 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,322 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,322 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,323 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,323 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,323 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,323 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,323 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,323 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,324 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,324 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,324 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,324 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,324 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,324 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,325 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,325 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,325 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,325 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,325 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,326 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,326 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,326 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,326 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,326 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,327 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,327 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,327 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,327 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,327 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,327 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,328 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,328 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,328 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,328 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,328 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,328 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,329 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,329 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,329 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,329 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,329 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,329 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,330 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,330 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,330 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,330 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,342 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,342 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,343 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,343 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,343 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,343 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,343 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,343 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,345 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,345 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,345 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,347 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,348 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,349 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,349 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,349 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:25,359 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-10-22 02:39:25,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 02:39:25,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:39:25,360 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:39:25,360 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:39:25,360 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:39:25,360 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:39:25,360 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:39:25,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:39:25,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:39:25,362 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:39:25,363 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 181 transitions, 392 flow [2020-10-22 02:39:25,368 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 181 transitions, 392 flow [2020-10-22 02:39:25,368 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 161 places, 181 transitions, 392 flow [2020-10-22 02:39:25,468 INFO L129 PetriNetUnfolder]: 54/372 cut-off events. [2020-10-22 02:39:25,469 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-22 02:39:25,475 INFO L80 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 372 events. 54/372 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 1 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 253. Up to 16 conditions per place. [2020-10-22 02:39:25,499 INFO L116 LiptonReduction]: Number of co-enabled transitions 16434 [2020-10-22 02:39:26,998 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-22 02:39:27,899 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-22 02:39:28,598 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2020-10-22 02:39:28,894 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-22 02:39:28,905 INFO L131 LiptonReduction]: Checked pairs total: 37307 [2020-10-22 02:39:28,906 INFO L133 LiptonReduction]: Total number of compositions: 137 [2020-10-22 02:39:28,906 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 74 transitions, 178 flow [2020-10-22 02:39:31,142 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26221 states. [2020-10-22 02:39:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 26221 states. [2020-10-22 02:39:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 02:39:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:31,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 02:39:31,143 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:31,144 INFO L82 PathProgramCache]: Analyzing trace with hash 33551767, now seen corresponding path program 1 times [2020-10-22 02:39:31,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:31,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125221088] [2020-10-22 02:39:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:31,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125221088] [2020-10-22 02:39:31,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:39:31,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:39:31,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646650624] [2020-10-22 02:39:31,180 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:39:31,180 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:39:31,181 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 02:39:31,181 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:39:31,182 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:39:31,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:39:31,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:39:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:39:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:39:31,183 INFO L87 Difference]: Start difference. First operand 26221 states. Second operand 3 states. [2020-10-22 02:39:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:39:31,480 INFO L93 Difference]: Finished difference Result 26216 states and 93058 transitions. [2020-10-22 02:39:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:39:31,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 02:39:31,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:39:32,526 INFO L225 Difference]: With dead ends: 26216 [2020-10-22 02:39:32,527 INFO L226 Difference]: Without dead ends: 14919 [2020-10-22 02:39:32,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:39:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14919 states. [2020-10-22 02:39:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14919 to 14919. [2020-10-22 02:39:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14919 states. [2020-10-22 02:39:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14919 states to 14919 states and 53132 transitions. [2020-10-22 02:39:33,311 INFO L78 Accepts]: Start accepts. Automaton has 14919 states and 53132 transitions. Word has length 4 [2020-10-22 02:39:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:39:33,311 INFO L481 AbstractCegarLoop]: Abstraction has 14919 states and 53132 transitions. [2020-10-22 02:39:33,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:39:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14919 states and 53132 transitions. [2020-10-22 02:39:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:39:33,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:33,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:39:33,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:39:33,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2011714477, now seen corresponding path program 1 times [2020-10-22 02:39:33,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:33,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564493622] [2020-10-22 02:39:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:33,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564493622] [2020-10-22 02:39:33,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247318215] [2020-10-22 02:39:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:39:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:33,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-22 02:39:33,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:39:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:33,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:39:33,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-22 02:39:33,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2121847586] [2020-10-22 02:39:33,567 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:39:33,568 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:39:33,569 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:39:33,569 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:39:33,570 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:39:33,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:39:33,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:39:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:39:33,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:39:33,571 INFO L87 Difference]: Start difference. First operand 14919 states and 53132 transitions. Second operand 4 states. [2020-10-22 02:39:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:39:33,715 INFO L93 Difference]: Finished difference Result 14883 states and 53063 transitions. [2020-10-22 02:39:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:39:33,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-22 02:39:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:39:33,785 INFO L225 Difference]: With dead ends: 14883 [2020-10-22 02:39:33,786 INFO L226 Difference]: Without dead ends: 14883 [2020-10-22 02:39:33,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:39:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14883 states. [2020-10-22 02:39:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14883 to 14883. [2020-10-22 02:39:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14883 states. [2020-10-22 02:39:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14883 states to 14883 states and 53063 transitions. [2020-10-22 02:39:34,384 INFO L78 Accepts]: Start accepts. Automaton has 14883 states and 53063 transitions. Word has length 8 [2020-10-22 02:39:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:39:34,385 INFO L481 AbstractCegarLoop]: Abstraction has 14883 states and 53063 transitions. [2020-10-22 02:39:34,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:39:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 14883 states and 53063 transitions. [2020-10-22 02:39:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:39:34,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:34,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-22 02:39:34,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:39:34,601 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:34,601 INFO L82 PathProgramCache]: Analyzing trace with hash 997359022, now seen corresponding path program 1 times [2020-10-22 02:39:34,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:34,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717063351] [2020-10-22 02:39:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:34,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717063351] [2020-10-22 02:39:34,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879628580] [2020-10-22 02:39:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:39:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:39:34,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 02:39:34,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:39:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:39:34,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:39:34,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-22 02:39:34,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [951187261] [2020-10-22 02:39:34,853 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:39:34,854 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:39:34,855 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-22 02:39:34,856 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:39:34,856 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:39:34,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:39:34,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:39:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:39:34,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:39:34,857 INFO L87 Difference]: Start difference. First operand 14883 states and 53063 transitions. Second operand 5 states. [2020-10-22 02:39:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:39:34,954 INFO L93 Difference]: Finished difference Result 14451 states and 51839 transitions. [2020-10-22 02:39:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:39:34,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:39:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:39:35,008 INFO L225 Difference]: With dead ends: 14451 [2020-10-22 02:39:35,009 INFO L226 Difference]: Without dead ends: 14451 [2020-10-22 02:39:35,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:39:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14451 states. [2020-10-22 02:39:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14451 to 14451. [2020-10-22 02:39:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14451 states. [2020-10-22 02:39:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14451 states to 14451 states and 51839 transitions. [2020-10-22 02:39:35,633 INFO L78 Accepts]: Start accepts. Automaton has 14451 states and 51839 transitions. Word has length 12 [2020-10-22 02:39:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:39:35,633 INFO L481 AbstractCegarLoop]: Abstraction has 14451 states and 51839 transitions. [2020-10-22 02:39:35,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:39:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14451 states and 51839 transitions. [2020-10-22 02:39:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:39:35,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:39:35,636 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-22 02:39:35,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:39:35,851 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:39:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:39:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash -800055626, now seen corresponding path program 1 times [2020-10-22 02:39:35,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:39:35,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99437591] [2020-10-22 02:39:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:39:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:39:35,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:39:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:39:35,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:39:35,904 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:39:35,905 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:39:35,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:39:35,906 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:39:35,907 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-22 02:39:35,928 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,928 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,928 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,928 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,928 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,929 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,929 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,929 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,929 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,929 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,929 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,930 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,931 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,931 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,931 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,931 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,931 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,931 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,932 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,932 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,934 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,934 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,934 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,934 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,935 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,935 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,935 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,935 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,935 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,938 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,946 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,946 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,946 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,947 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,947 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,947 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,948 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,949 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,950 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,950 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,951 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,951 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,951 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,951 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,951 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,951 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,952 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,953 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,953 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,953 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,953 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,954 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,955 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,955 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,956 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,957 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,957 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,957 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,957 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,957 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,957 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,959 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,959 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,959 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,959 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,959 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,960 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,966 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,967 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,967 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,967 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,968 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,969 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,970 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,971 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,972 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,972 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,972 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,972 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,974 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,974 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,974 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,974 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,975 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,975 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:35,976 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:39:36,040 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-22 02:39:36,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-22 02:39:36,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:39:36,040 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:39:36,041 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:39:36,041 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:39:36,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:39:36,041 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:39:36,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:39:36,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:39:36,047 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:39:36,047 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 216 transitions, 476 flow [2020-10-22 02:39:36,047 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 216 transitions, 476 flow [2020-10-22 02:39:36,047 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 191 places, 216 transitions, 476 flow [2020-10-22 02:39:36,172 INFO L129 PetriNetUnfolder]: 86/563 cut-off events. [2020-10-22 02:39:36,173 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-22 02:39:36,182 INFO L80 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 563 events. 86/563 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2384 event pairs, 6 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 392. Up to 32 conditions per place. [2020-10-22 02:39:36,216 INFO L116 LiptonReduction]: Number of co-enabled transitions 26664 [2020-10-22 02:39:38,598 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-22 02:39:38,807 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-22 02:39:39,416 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-10-22 02:39:39,708 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-22 02:39:39,729 INFO L131 LiptonReduction]: Checked pairs total: 64244 [2020-10-22 02:39:39,729 INFO L133 LiptonReduction]: Total number of compositions: 161 [2020-10-22 02:39:39,729 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 93 transitions, 230 flow [2020-10-22 02:42:59,908 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 325657 states. [2020-10-22 02:42:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 325657 states. [2020-10-22 02:42:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-22 02:42:59,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:42:59,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-22 02:42:59,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:42:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:42:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 46240635, now seen corresponding path program 1 times [2020-10-22 02:42:59,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:42:59,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511474359] [2020-10-22 02:42:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:42:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:42:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:42:59,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511474359] [2020-10-22 02:42:59,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:42:59,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:42:59,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1312779712] [2020-10-22 02:42:59,938 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:42:59,938 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:42:59,939 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-22 02:42:59,939 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:42:59,939 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:42:59,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:42:59,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:42:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:42:59,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:42:59,940 INFO L87 Difference]: Start difference. First operand 325657 states. Second operand 3 states. [2020-10-22 02:43:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:43:10,047 INFO L93 Difference]: Finished difference Result 325652 states and 1444602 transitions. [2020-10-22 02:43:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:43:10,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-22 02:43:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:43:10,833 INFO L225 Difference]: With dead ends: 325652 [2020-10-22 02:43:10,833 INFO L226 Difference]: Without dead ends: 179079 [2020-10-22 02:43:10,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown