/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:45:48,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:45:48,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:45:48,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:45:48,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:45:48,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:45:48,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:45:48,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:45:48,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:45:48,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:45:48,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:45:48,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:45:48,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:45:48,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:45:48,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:45:48,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:45:48,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:45:48,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:45:48,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:45:48,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:45:48,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:45:48,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:45:48,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:45:48,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:45:48,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 14:45:48,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 14:45:48,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 14:45:48,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 14:45:48,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 14:45:48,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 14:45:48,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:45:48,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:45:48,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:45:48,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:45:48,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:45:48,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:45:48,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:45:48,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:45:48,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:45:48,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:45:48,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:45:48,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 14:45:48,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:45:48,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:45:48,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:45:48,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:45:48,780 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:45:48,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:45:48,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:45:48,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:45:48,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:45:48,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:45:48,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:45:48,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:45:48,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:45:48,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:45:48,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:45:48,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:45:48,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:45:48,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:45:48,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:45:48,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:45:48,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:45:48,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:45:48,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:45:48,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:45:48,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:45:48,787 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 14:45:48,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:45:48,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 14:45:48,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 14:45:48,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:45:49,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:45:49,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:45:49,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:45:49,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:45:49,155 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:45:49,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2020-10-09 14:45:49,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f3bec71/2334c645f40b4819baf3ee11e905aa06/FLAGc83af7c7a [2020-10-09 14:45:49,798 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:45:49,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2020-10-09 14:45:49,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f3bec71/2334c645f40b4819baf3ee11e905aa06/FLAGc83af7c7a [2020-10-09 14:45:50,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f3bec71/2334c645f40b4819baf3ee11e905aa06 [2020-10-09 14:45:50,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:45:50,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:45:50,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:45:50,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:45:50,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:45:50,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea28664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50, skipping insertion in model container [2020-10-09 14:45:50,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:45:50,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:45:50,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:45:50,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:45:50,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:45:50,839 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:45:50,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50 WrapperNode [2020-10-09 14:45:50,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:45:50,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:45:50,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:45:50,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:45:50,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:45:50,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:45:50,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:45:50,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:45:50,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... [2020-10-09 14:45:50,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:45:50,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:45:50,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:45:50,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:45:50,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:45:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 14:45:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-09 14:45:51,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-09 14:45:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-09 14:45:51,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-09 14:45:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:45:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 14:45:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:45:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:45:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 14:45:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:45:51,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:45:51,004 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:45:51,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:45:51,423 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-09 14:45:51,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:45:51 BoogieIcfgContainer [2020-10-09 14:45:51,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:45:51,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:45:51,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:45:51,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:45:51,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:45:50" (1/3) ... [2020-10-09 14:45:51,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ca33b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:45:51, skipping insertion in model container [2020-10-09 14:45:51,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:45:50" (2/3) ... [2020-10-09 14:45:51,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ca33b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:45:51, skipping insertion in model container [2020-10-09 14:45:51,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:45:51" (3/3) ... [2020-10-09 14:45:51,435 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-10-09 14:45:51,449 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:45:51,458 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:45:51,459 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:45:51,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,491 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,491 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,497 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,509 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,510 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,510 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,510 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,510 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:45:51,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 14:45:51,556 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:45:51,556 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 14:45:51,556 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:45:51,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:45:51,557 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:45:51,557 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:45:51,557 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:45:51,557 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:45:51,572 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-10-09 14:45:51,627 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-10-09 14:45:51,627 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:45:51,632 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. [2020-10-09 14:45:51,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 78 transitions, 178 flow [2020-10-09 14:45:51,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 152 flow [2020-10-09 14:45:51,665 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2020-10-09 14:45:51,665 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:45:51,665 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:45:51,667 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:45:51,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:45:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:45:51,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2051967392, now seen corresponding path program 1 times [2020-10-09 14:45:51,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:45:51,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743850727] [2020-10-09 14:45:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 14:45:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:45:51,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:45:51,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:45:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:51,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:45:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:51,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743850727] [2020-10-09 14:45:51,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:45:51,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-09 14:45:51,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923400937] [2020-10-09 14:45:51,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 14:45:51,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:45:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 14:45:52,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:45:52,165 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2020-10-09 14:45:52,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 152 flow. Second operand 6 states. [2020-10-09 14:45:52,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:45:52,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2020-10-09 14:45:52,170 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:45:52,284 INFO L129 PetriNetUnfolder]: 4/140 cut-off events. [2020-10-09 14:45:52,285 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-09 14:45:52,286 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 140 events. 4/140 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 426 event pairs, 0 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2020-10-09 14:45:52,288 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 7 selfloop transitions, 6 changer transitions 4/76 dead transitions. [2020-10-09 14:45:52,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 204 flow [2020-10-09 14:45:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 14:45:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 14:45:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 639 transitions. [2020-10-09 14:45:52,310 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2020-10-09 14:45:52,311 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 639 transitions. [2020-10-09 14:45:52,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 639 transitions. [2020-10-09 14:45:52,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:45:52,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 639 transitions. [2020-10-09 14:45:52,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 14:45:52,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 14:45:52,338 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 14:45:52,340 INFO L185 Difference]: Start difference. First operand has 72 places, 67 transitions, 152 flow. Second operand 9 states and 639 transitions. [2020-10-09 14:45:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 204 flow [2020-10-09 14:45:52,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 14:45:52,358 INFO L241 Difference]: Finished difference. Result has 82 places, 71 transitions, 181 flow [2020-10-09 14:45:52,362 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=181, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2020-10-09 14:45:52,363 INFO L341 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2020-10-09 14:45:52,363 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 181 flow [2020-10-09 14:45:52,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 14:45:52,364 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:45:52,364 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:45:52,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 14:45:52,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:45:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:45:52,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1085139996, now seen corresponding path program 1 times [2020-10-09 14:45:52,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:45:52,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573128378] [2020-10-09 14:45:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 14:45:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:45:52,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 14:45:52,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:45:52,708 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-09 14:45:52,708 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:45:52,712 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:45:52,713 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:45:52,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-09 14:45:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:52,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:45:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:52,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573128378] [2020-10-09 14:45:52,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:45:52,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-09 14:45:52,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924158330] [2020-10-09 14:45:52,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 14:45:52,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:45:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 14:45:52,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 14:45:52,876 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 78 [2020-10-09 14:45:52,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 181 flow. Second operand 4 states. [2020-10-09 14:45:52,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:45:52,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 78 [2020-10-09 14:45:52,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:45:52,924 INFO L129 PetriNetUnfolder]: 3/102 cut-off events. [2020-10-09 14:45:52,925 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-09 14:45:52,926 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 102 events. 3/102 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 2 based on Foata normal form. 6/108 useless extension candidates. Maximal degree in co-relation 137. Up to 12 conditions per place. [2020-10-09 14:45:52,927 INFO L132 encePairwiseOnDemand]: 70/78 looper letters, 3 selfloop transitions, 8 changer transitions 1/68 dead transitions. [2020-10-09 14:45:52,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 186 flow [2020-10-09 14:45:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:45:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:45:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2020-10-09 14:45:52,930 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2020-10-09 14:45:52,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2020-10-09 14:45:52,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2020-10-09 14:45:52,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:45:52,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2020-10-09 14:45:52,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:45:52,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:45:52,933 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:45:52,933 INFO L185 Difference]: Start difference. First operand has 82 places, 71 transitions, 181 flow. Second operand 3 states and 213 transitions. [2020-10-09 14:45:52,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 186 flow [2020-10-09 14:45:52,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 176 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-09 14:45:52,937 INFO L241 Difference]: Finished difference. Result has 74 places, 67 transitions, 164 flow [2020-10-09 14:45:52,938 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2020-10-09 14:45:52,939 INFO L341 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2020-10-09 14:45:52,939 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 164 flow [2020-10-09 14:45:52,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 14:45:52,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:45:52,940 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:45:53,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 14:45:53,154 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:45:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:45:53,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1798201568, now seen corresponding path program 2 times [2020-10-09 14:45:53,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:45:53,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796396993] [2020-10-09 14:45:53,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 14:45:53,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 14:45:53,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:45:53,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-09 14:45:53,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:45:53,271 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-09 14:45:53,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:45:53,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:45:53,278 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:45:53,278 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-09 14:45:53,305 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-09 14:45:53,306 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:45:53,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:45:53,311 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:45:53,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-10-09 14:45:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:53,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:45:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:53,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796396993] [2020-10-09 14:45:53,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:45:53,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-09 14:45:53,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144782457] [2020-10-09 14:45:53,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 14:45:53,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:45:53,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 14:45:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-09 14:45:53,993 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 78 [2020-10-09 14:45:53,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 164 flow. Second operand 7 states. [2020-10-09 14:45:53,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:45:53,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 78 [2020-10-09 14:45:53,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:45:54,044 INFO L129 PetriNetUnfolder]: 2/100 cut-off events. [2020-10-09 14:45:54,045 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2020-10-09 14:45:54,045 INFO L80 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 100 events. 2/100 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 128 event pairs, 2 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2020-10-09 14:45:54,047 INFO L132 encePairwiseOnDemand]: 73/78 looper letters, 3 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2020-10-09 14:45:54,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 175 flow [2020-10-09 14:45:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 14:45:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-09 14:45:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 348 transitions. [2020-10-09 14:45:54,050 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8923076923076924 [2020-10-09 14:45:54,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 348 transitions. [2020-10-09 14:45:54,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 348 transitions. [2020-10-09 14:45:54,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:45:54,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 348 transitions. [2020-10-09 14:45:54,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-09 14:45:54,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-09 14:45:54,055 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-09 14:45:54,055 INFO L185 Difference]: Start difference. First operand has 74 places, 67 transitions, 164 flow. Second operand 5 states and 348 transitions. [2020-10-09 14:45:54,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 175 flow [2020-10-09 14:45:54,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 163 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-09 14:45:54,063 INFO L241 Difference]: Finished difference. Result has 74 places, 66 transitions, 157 flow [2020-10-09 14:45:54,064 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2020-10-09 14:45:54,065 INFO L341 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2020-10-09 14:45:54,066 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 157 flow [2020-10-09 14:45:54,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 14:45:54,066 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:45:54,066 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:45:54,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 14:45:54,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:45:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:45:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash -303072588, now seen corresponding path program 2 times [2020-10-09 14:45:54,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:45:54,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113711125] [2020-10-09 14:45:54,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 14:45:54,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 14:45:54,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:45:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:45:54,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:45:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:54,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:45:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:45:54,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113711125] [2020-10-09 14:45:54,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:45:54,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-09 14:45:54,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143092624] [2020-10-09 14:45:54,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 14:45:54,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:45:54,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 14:45:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-09 14:45:54,495 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2020-10-09 14:45:54,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 157 flow. Second operand 6 states. [2020-10-09 14:45:54,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:45:54,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2020-10-09 14:45:54,497 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:45:54,547 INFO L129 PetriNetUnfolder]: 2/98 cut-off events. [2020-10-09 14:45:54,547 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:45:54,548 INFO L80 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 98 events. 2/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 128 event pairs, 2 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 82. Up to 9 conditions per place. [2020-10-09 14:45:54,548 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2020-10-09 14:45:54,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 167 flow [2020-10-09 14:45:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 14:45:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 14:45:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 491 transitions. [2020-10-09 14:45:54,551 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8992673992673993 [2020-10-09 14:45:54,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 491 transitions. [2020-10-09 14:45:54,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 491 transitions. [2020-10-09 14:45:54,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:45:54,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 491 transitions. [2020-10-09 14:45:54,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 14:45:54,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 14:45:54,554 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 14:45:54,554 INFO L185 Difference]: Start difference. First operand has 74 places, 66 transitions, 157 flow. Second operand 7 states and 491 transitions. [2020-10-09 14:45:54,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 167 flow [2020-10-09 14:45:54,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 14:45:54,556 INFO L241 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2020-10-09 14:45:54,556 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2020-10-09 14:45:54,557 INFO L341 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2020-10-09 14:45:54,557 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2020-10-09 14:45:54,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 14:45:54,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 14:45:54,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:45:54 BasicIcfg [2020-10-09 14:45:54,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:45:54,775 INFO L168 Benchmark]: Toolchain (without parser) took 4660.65 ms. Allocated memory was 257.4 MB in the beginning and 376.4 MB in the end (delta: 119.0 MB). Free memory was 212.5 MB in the beginning and 225.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 106.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,776 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 257.4 MB. Free memory was 235.5 MB in the beginning and 234.7 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.68 ms. Allocated memory was 257.4 MB in the beginning and 329.8 MB in the end (delta: 72.4 MB). Free memory was 212.5 MB in the beginning and 286.4 MB in the end (delta: -73.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.99 ms. Allocated memory is still 329.8 MB. Free memory was 285.6 MB in the beginning and 283.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,778 INFO L168 Benchmark]: Boogie Preprocessor took 30.26 ms. Allocated memory is still 329.8 MB. Free memory was 283.9 MB in the beginning and 282.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,779 INFO L168 Benchmark]: RCFGBuilder took 494.79 ms. Allocated memory is still 329.8 MB. Free memory was 282.2 MB in the beginning and 257.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,780 INFO L168 Benchmark]: TraceAbstraction took 3346.49 ms. Allocated memory was 329.8 MB in the beginning and 376.4 MB in the end (delta: 46.7 MB). Free memory was 257.6 MB in the beginning and 225.2 MB in the end (delta: 32.5 MB). Peak memory consumption was 79.1 MB. Max. memory is 14.2 GB. [2020-10-09 14:45:54,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 257.4 MB. Free memory was 235.5 MB in the beginning and 234.7 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 725.68 ms. Allocated memory was 257.4 MB in the beginning and 329.8 MB in the end (delta: 72.4 MB). Free memory was 212.5 MB in the beginning and 286.4 MB in the end (delta: -73.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 56.99 ms. Allocated memory is still 329.8 MB. Free memory was 285.6 MB in the beginning and 283.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.26 ms. Allocated memory is still 329.8 MB. Free memory was 283.9 MB in the beginning and 282.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 494.79 ms. Allocated memory is still 329.8 MB. Free memory was 282.2 MB in the beginning and 257.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3346.49 ms. Allocated memory was 329.8 MB in the beginning and 376.4 MB in the end (delta: 46.7 MB). Free memory was 257.6 MB in the beginning and 225.2 MB in the end (delta: 32.5 MB). Peak memory consumption was 79.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 121 SDslu, 75 SDs, 0 SdLazy, 286 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 518 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 512 ConstructedInterpolants, 0 QuantifiedInterpolants, 84480 SizeOfPredicates, 11 NumberOfNonLiveVariables, 644 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...