/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-WP.epf -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:25:16,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:25:16,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:25:16,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:25:16,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:25:16,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:25:16,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:25:16,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:25:16,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:25:16,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:25:16,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:25:16,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:25:16,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:25:16,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:25:16,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:25:16,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:25:16,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:25:16,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:25:16,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:25:16,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:25:16,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:25:16,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:25:16,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:25:16,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:25:16,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 20:25:16,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 20:25:16,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 20:25:16,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 20:25:16,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 20:25:16,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 20:25:16,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:25:16,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:25:16,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:25:16,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:25:16,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:25:16,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:25:16,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:25:16,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:25:16,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:25:16,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:25:16,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:25:16,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 20:25:16,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:25:16,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:25:16,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:25:16,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:25:16,694 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:25:16,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:25:16,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:25:16,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:25:16,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:25:16,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:25:16,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:25:16,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:25:16,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:25:16,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:25:16,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:25:16,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:25:16,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:25:16,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:25:16,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:25:16,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:25:16,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:25:16,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:25:16,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:25:16,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:25:16,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:25:16,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:25:16,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:25:16,699 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 20:25:16,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:25:16,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:25:16,699 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 20:25:17,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:25:17,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:25:17,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:25:17,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:25:17,246 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:25:17,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2020-09-11 20:25:17,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a51e75f2/39ce09fbde774975b1e686d7aa12472d/FLAG6b20878f8 [2020-09-11 20:25:18,000 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:25:18,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/stateful01-2.i [2020-09-11 20:25:18,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a51e75f2/39ce09fbde774975b1e686d7aa12472d/FLAG6b20878f8 [2020-09-11 20:25:18,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a51e75f2/39ce09fbde774975b1e686d7aa12472d [2020-09-11 20:25:18,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:25:18,278 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:25:18,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:25:18,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:25:18,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:25:18,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:25:18" (1/1) ... [2020-09-11 20:25:18,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea3b4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:18, skipping insertion in model container [2020-09-11 20:25:18,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:25:18" (1/1) ... [2020-09-11 20:25:18,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:25:18,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:25:18,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:25:18,981 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:25:19,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:25:19,145 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:25:19,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19 WrapperNode [2020-09-11 20:25:19,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:25:19,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:25:19,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:25:19,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:25:19,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:25:19,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:25:19,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:25:19,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:25:19,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... [2020-09-11 20:25:19,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:25:19,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:25:19,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:25:19,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:25:19,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 20:25:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-11 20:25:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-11 20:25:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-11 20:25:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-11 20:25:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-11 20:25:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:25:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-09-11 20:25:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:25:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:25:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-11 20:25:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:25:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:25:19,356 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:25:19,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:25:19,856 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-11 20:25:19,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:25:19 BoogieIcfgContainer [2020-09-11 20:25:19,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:25:19,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:25:19,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:25:19,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:25:19,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:25:18" (1/3) ... [2020-09-11 20:25:19,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8a1e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:25:19, skipping insertion in model container [2020-09-11 20:25:19,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:19" (2/3) ... [2020-09-11 20:25:19,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8a1e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:25:19, skipping insertion in model container [2020-09-11 20:25:19,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:25:19" (3/3) ... [2020-09-11 20:25:19,873 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-09-11 20:25:19,887 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:25:19,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:25:19,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 20:25:19,901 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:25:19,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,937 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,937 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,937 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,939 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,940 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,941 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,941 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,942 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,942 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,942 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,942 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,943 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,943 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,943 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,944 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,944 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,944 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,961 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,961 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,962 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,962 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,963 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:25:19,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-11 20:25:20,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:25:20,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:25:20,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:25:20,030 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:25:20,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:25:20,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:25:20,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:25:20,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:25:20,053 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions, 178 flow [2020-09-11 20:25:20,056 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-09-11 20:25:20,119 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-11 20:25:20,120 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-11 20:25:20,125 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-09-11 20:25:20,128 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-09-11 20:25:20,159 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-11 20:25:20,160 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-11 20:25:20,160 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-09-11 20:25:20,162 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2020-09-11 20:25:20,164 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:25:21,840 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-11 20:25:22,409 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-11 20:25:22,611 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-11 20:25:22,637 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2020-09-11 20:25:22,637 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-11 20:25:22,642 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-09-11 20:25:22,664 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-09-11 20:25:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-09-11 20:25:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:25:22,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:25:22,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:25:22,685 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:25:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:25:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash 535203952, now seen corresponding path program 1 times [2020-09-11 20:25:22,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:25:22,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781973312] [2020-09-11 20:25:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:25:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:25:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:25:23,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781973312] [2020-09-11 20:25:23,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:25:23,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:25:23,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1234876435] [2020-09-11 20:25:23,176 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:25:23,190 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:25:23,259 INFO L274 McrAutomatonBuilder]: Finished intersection with 79 states and 140 transitions. [2020-09-11 20:25:23,260 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:25:23,409 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [484#(not (= (select (select |#pthreadsMutex| |~#ma~0.base|) |~#ma~0.offset|) 0))] [2020-09-11 20:25:23,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:25:23,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:25:23,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:25:23,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:25:23,434 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-09-11 20:25:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:25:23,514 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2020-09-11 20:25:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:25:23,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-11 20:25:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:25:23,538 INFO L225 Difference]: With dead ends: 150 [2020-09-11 20:25:23,539 INFO L226 Difference]: Without dead ends: 149 [2020-09-11 20:25:23,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:25:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-11 20:25:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-09-11 20:25:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-11 20:25:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2020-09-11 20:25:23,642 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2020-09-11 20:25:23,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:25:23,651 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2020-09-11 20:25:23,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:25:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2020-09-11 20:25:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:25:23,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:25:23,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:25:23,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:25:23,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:25:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:25:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1346228208, now seen corresponding path program 2 times [2020-09-11 20:25:23,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:25:23,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379761507] [2020-09-11 20:25:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:25:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:25:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:25:23,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379761507] [2020-09-11 20:25:23,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:25:23,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 20:25:23,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [538461011] [2020-09-11 20:25:23,800 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:25:23,805 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:25:23,819 INFO L274 McrAutomatonBuilder]: Finished intersection with 64 states and 101 transitions. [2020-09-11 20:25:23,820 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:25:23,960 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:25:23,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:25:23,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:25:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:25:23,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:25:23,963 INFO L87 Difference]: Start difference. First operand 149 states and 253 transitions. Second operand 5 states. [2020-09-11 20:25:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:25:24,015 INFO L93 Difference]: Finished difference Result 149 states and 252 transitions. [2020-09-11 20:25:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:25:24,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-11 20:25:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:25:24,018 INFO L225 Difference]: With dead ends: 149 [2020-09-11 20:25:24,018 INFO L226 Difference]: Without dead ends: 122 [2020-09-11 20:25:24,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:25:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-11 20:25:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-11 20:25:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-11 20:25:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2020-09-11 20:25:24,038 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2020-09-11 20:25:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:25:24,038 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2020-09-11 20:25:24,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:25:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-09-11 20:25:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:25:24,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:25:24,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:25:24,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:25:24,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:25:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:25:24,043 INFO L82 PathProgramCache]: Analyzing trace with hash 352163958, now seen corresponding path program 1 times [2020-09-11 20:25:24,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:25:24,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775392993] [2020-09-11 20:25:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:25:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:25:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:25:24,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775392993] [2020-09-11 20:25:24,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:25:24,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 20:25:24,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [943476310] [2020-09-11 20:25:24,234 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:25:24,238 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:25:24,247 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 53 transitions. [2020-09-11 20:25:24,248 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:25:24,280 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:25:24,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:25:24,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:25:24,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:25:24,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:25:24,282 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 6 states. [2020-09-11 20:25:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:25:24,334 INFO L93 Difference]: Finished difference Result 164 states and 266 transitions. [2020-09-11 20:25:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:25:24,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-11 20:25:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:25:24,336 INFO L225 Difference]: With dead ends: 164 [2020-09-11 20:25:24,336 INFO L226 Difference]: Without dead ends: 98 [2020-09-11 20:25:24,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:25:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-11 20:25:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-11 20:25:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-11 20:25:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 161 transitions. [2020-09-11 20:25:24,344 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 161 transitions. Word has length 25 [2020-09-11 20:25:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:25:24,344 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 161 transitions. [2020-09-11 20:25:24,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:25:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-09-11 20:25:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 20:25:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:25:24,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:25:24,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:25:24,347 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:25:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:25:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1213192784, now seen corresponding path program 2 times [2020-09-11 20:25:24,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:25:24,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924083047] [2020-09-11 20:25:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:25:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:25:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:25:24,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924083047] [2020-09-11 20:25:24,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:25:24,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 20:25:24,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1774804957] [2020-09-11 20:25:24,486 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:25:24,491 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:25:24,510 INFO L274 McrAutomatonBuilder]: Finished intersection with 57 states and 87 transitions. [2020-09-11 20:25:24,510 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:25:24,575 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:25:24,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:25:24,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:25:24,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:25:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:25:24,576 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 6 states. [2020-09-11 20:25:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:25:24,628 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2020-09-11 20:25:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:25:24,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-11 20:25:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:25:24,629 INFO L225 Difference]: With dead ends: 97 [2020-09-11 20:25:24,629 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 20:25:24,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:25:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 20:25:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 20:25:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 20:25:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 20:25:24,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-11 20:25:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:25:24,632 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 20:25:24,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:25:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 20:25:24,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 20:25:24,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:25:24,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:25:24 BasicIcfg [2020-09-11 20:25:24,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:25:24,640 INFO L168 Benchmark]: Toolchain (without parser) took 6367.04 ms. Allocated memory was 138.4 MB in the beginning and 285.7 MB in the end (delta: 147.3 MB). Free memory was 100.4 MB in the beginning and 253.6 MB in the end (delta: -153.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 20:25:24,641 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 20:25:24,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 867.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 99.8 MB in the beginning and 163.4 MB in the end (delta: -63.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:25:24,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 203.4 MB. Free memory was 163.4 MB in the beginning and 160.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-11 20:25:24,644 INFO L168 Benchmark]: Boogie Preprocessor took 32.93 ms. Allocated memory is still 203.4 MB. Free memory was 160.7 MB in the beginning and 159.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-11 20:25:24,645 INFO L168 Benchmark]: RCFGBuilder took 618.25 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 135.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-11 20:25:24,646 INFO L168 Benchmark]: TraceAbstraction took 4774.12 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 135.1 MB in the beginning and 253.6 MB in the end (delta: -118.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 20:25:24,650 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 867.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 99.8 MB in the beginning and 163.4 MB in the end (delta: -63.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 203.4 MB. Free memory was 163.4 MB in the beginning and 160.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.93 ms. Allocated memory is still 203.4 MB. Free memory was 160.7 MB in the beginning and 159.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 618.25 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 135.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4774.12 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 135.1 MB in the beginning and 253.6 MB in the end (delta: -118.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.5s, 82 ProgramPointsBefore, 35 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 288 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 708]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 148 SDtfs, 64 SDslu, 280 SDs, 0 SdLazy, 65 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 12048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...