/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:36:33,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:36:33,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:36:33,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:36:33,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:36:33,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:36:33,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:36:33,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:36:33,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:36:33,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:36:33,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:36:33,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:36:33,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:36:33,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:36:33,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:36:33,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:36:33,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:36:33,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:36:33,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:36:33,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:36:33,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:36:33,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:36:33,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:36:33,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:36:33,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:36:33,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:36:33,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:36:33,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:36:33,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:36:33,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:36:33,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:36:33,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:36:33,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:36:33,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:36:33,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:36:33,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:36:33,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:36:33,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:36:33,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:36:33,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:36:33,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:36:33,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:36:33,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:36:33,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:36:33,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:36:33,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:36:33,768 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:36:33,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:36:33,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:36:33,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:36:33,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:36:33,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:36:33,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:36:33,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:36:33,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:36:33,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:36:33,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:36:33,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:36:33,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:36:33,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:36:33,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:36:33,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:36:33,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:36:33,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:36:33,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:36:33,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:36:33,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:36:33,772 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:36:33,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:36:33,773 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:36:33,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:36:33,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:36:34,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:36:34,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:36:34,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:36:34,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:36:34,069 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:36:34,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-04-18 07:36:34,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b605af4/80c44a828c0741e4aa9d29d24d8ef71e/FLAGb177660b2 [2020-04-18 07:36:34,726 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:36:34,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-04-18 07:36:34,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b605af4/80c44a828c0741e4aa9d29d24d8ef71e/FLAGb177660b2 [2020-04-18 07:36:35,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70b605af4/80c44a828c0741e4aa9d29d24d8ef71e [2020-04-18 07:36:35,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:36:35,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:36:35,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:36:35,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:36:35,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:36:35,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16daf421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35, skipping insertion in model container [2020-04-18 07:36:35,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:36:35,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:36:35,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:36:35,668 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:36:35,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:36:35,814 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:36:35,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35 WrapperNode [2020-04-18 07:36:35,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:36:35,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:36:35,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:36:35,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:36:35,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:36:35,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:36:35,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:36:35,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:36:35,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (1/1) ... [2020-04-18 07:36:35,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:36:35,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:36:35,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:36:35,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:36:35,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (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 [2020-04-18 07:36:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 07:36:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 07:36:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 07:36:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:36:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:36:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:36:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:36:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:36:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:36:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:36:35,968 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:36:36,355 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:36:36,355 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-04-18 07:36:36,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:36:36 BoogieIcfgContainer [2020-04-18 07:36:36,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:36:36,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:36:36,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:36:36,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:36:36,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:36:35" (1/3) ... [2020-04-18 07:36:36,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbd336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:36:36, skipping insertion in model container [2020-04-18 07:36:36,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:35" (2/3) ... [2020-04-18 07:36:36,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbd336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:36:36, skipping insertion in model container [2020-04-18 07:36:36,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:36:36" (3/3) ... [2020-04-18 07:36:36,366 INFO L109 eAbstractionObserver]: Analyzing ICFG szymanski.i [2020-04-18 07:36:36,376 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:36:36,377 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:36:36,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 07:36:36,385 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:36:36,407 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,408 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,408 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,409 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,412 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,412 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,414 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,414 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,415 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,415 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,417 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,417 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,423 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,423 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,423 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,424 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,432 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,432 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,432 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,432 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:36:36,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:36:36,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:36:36,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:36:36,473 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:36:36,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:36:36,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:36:36,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:36:36,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:36:36,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:36:36,488 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 87 transitions, 196 flow [2020-04-18 07:36:36,489 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions, 196 flow [2020-04-18 07:36:36,533 INFO L129 PetriNetUnfolder]: 21/87 cut-off events. [2020-04-18 07:36:36,533 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:36:36,540 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-04-18 07:36:36,543 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions, 196 flow [2020-04-18 07:36:36,568 INFO L129 PetriNetUnfolder]: 21/87 cut-off events. [2020-04-18 07:36:36,568 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:36:36,570 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-04-18 07:36:36,572 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2160 [2020-04-18 07:36:36,573 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:36:37,693 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4147 [2020-04-18 07:36:37,693 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2020-04-18 07:36:37,696 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 59 transitions, 140 flow [2020-04-18 07:36:37,738 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 509 states. [2020-04-18 07:36:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states. [2020-04-18 07:36:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 07:36:37,748 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:37,749 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:37,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:37,756 INFO L82 PathProgramCache]: Analyzing trace with hash -223988154, now seen corresponding path program 1 times [2020-04-18 07:36:37,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:37,764 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1909753723] [2020-04-18 07:36:37,777 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:37,788 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 07:36:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 07:36:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 07:36:37,791 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:37,791 INFO L82 PathProgramCache]: Analyzing trace with hash -223988154, now seen corresponding path program 2 times [2020-04-18 07:36:37,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:37,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601736309] [2020-04-18 07:36:37,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:37,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601736309] [2020-04-18 07:36:37,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:37,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:36:37,951 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:37,952 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:37,954 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 07:36:37,955 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:37,958 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:36:37,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:36:37,965 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 07:36:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:37,969 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 07:36:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 07:36:37,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:37,970 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1909753723] [2020-04-18 07:36:37,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:37,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:36:37,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1909753723] [2020-04-18 07:36:37,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 07:36:37,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:37,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:36:37,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:36:37,982 INFO L87 Difference]: Start difference. First operand 509 states. Second operand 2 states. [2020-04-18 07:36:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,020 INFO L93 Difference]: Finished difference Result 509 states and 1466 transitions. [2020-04-18 07:36:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 07:36:38,022 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 07:36:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:38,044 INFO L225 Difference]: With dead ends: 509 [2020-04-18 07:36:38,045 INFO L226 Difference]: Without dead ends: 470 [2020-04-18 07:36:38,046 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:36:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-04-18 07:36:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2020-04-18 07:36:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-04-18 07:36:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1363 transitions. [2020-04-18 07:36:38,142 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1363 transitions. Word has length 8 [2020-04-18 07:36:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:38,143 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 1363 transitions. [2020-04-18 07:36:38,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 07:36:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1363 transitions. [2020-04-18 07:36:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:36:38,145 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:38,145 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:38,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1417283260, now seen corresponding path program 1 times [2020-04-18 07:36:38,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:38,149 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1917635542] [2020-04-18 07:36:38,150 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:36:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:36:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:36:38,151 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:38,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1417283260, now seen corresponding path program 2 times [2020-04-18 07:36:38,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042867253] [2020-04-18 07:36:38,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:38,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042867253] [2020-04-18 07:36:38,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:38,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:36:38,257 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:38,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:36:38,259 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:38,275 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:38,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,276 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 07:36:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,283 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:36:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:36:38,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:38,284 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1917635542] [2020-04-18 07:36:38,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:38,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:36:38,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1917635542] [2020-04-18 07:36:38,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:36:38,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:38,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,287 INFO L87 Difference]: Start difference. First operand 470 states and 1363 transitions. Second operand 3 states. [2020-04-18 07:36:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,338 INFO L93 Difference]: Finished difference Result 481 states and 1359 transitions. [2020-04-18 07:36:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:36:38,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 07:36:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:38,345 INFO L225 Difference]: With dead ends: 481 [2020-04-18 07:36:38,347 INFO L226 Difference]: Without dead ends: 391 [2020-04-18 07:36:38,349 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-04-18 07:36:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 373. [2020-04-18 07:36:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-04-18 07:36:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1071 transitions. [2020-04-18 07:36:38,407 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1071 transitions. Word has length 10 [2020-04-18 07:36:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:38,407 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 1071 transitions. [2020-04-18 07:36:38,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:36:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1071 transitions. [2020-04-18 07:36:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:36:38,412 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:38,413 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:38,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2015895147, now seen corresponding path program 1 times [2020-04-18 07:36:38,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:38,414 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [976080273] [2020-04-18 07:36:38,414 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,415 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:36:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 07:36:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:36:38,417 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -2015895147, now seen corresponding path program 2 times [2020-04-18 07:36:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591864602] [2020-04-18 07:36:38,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:38,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591864602] [2020-04-18 07:36:38,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:38,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:36:38,522 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:38,522 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,524 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:36:38,524 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:38,529 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,530 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-04-18 07:36:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,533 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-04-18 07:36:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-04-18 07:36:38,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:38,534 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [976080273] [2020-04-18 07:36:38,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:38,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:36:38,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [976080273] [2020-04-18 07:36:38,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:36:38,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:38,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,536 INFO L87 Difference]: Start difference. First operand 373 states and 1071 transitions. Second operand 3 states. [2020-04-18 07:36:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,563 INFO L93 Difference]: Finished difference Result 360 states and 1018 transitions. [2020-04-18 07:36:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:36:38,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 07:36:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:38,568 INFO L225 Difference]: With dead ends: 360 [2020-04-18 07:36:38,568 INFO L226 Difference]: Without dead ends: 264 [2020-04-18 07:36:38,570 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-04-18 07:36:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2020-04-18 07:36:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-04-18 07:36:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 749 transitions. [2020-04-18 07:36:38,584 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 749 transitions. Word has length 12 [2020-04-18 07:36:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:38,587 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 749 transitions. [2020-04-18 07:36:38,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:36:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 749 transitions. [2020-04-18 07:36:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:38,594 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:36:38,594 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:36:38,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:36:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash 573136511, now seen corresponding path program 1 times [2020-04-18 07:36:38,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:36:38,600 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1831265239] [2020-04-18 07:36:38,601 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,612 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 163 transitions. [2020-04-18 07:36:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-04-18 07:36:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:38,614 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:36:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2063735169, now seen corresponding path program 2 times [2020-04-18 07:36:38,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597389213] [2020-04-18 07:36:38,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:38,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597389213] [2020-04-18 07:36:38,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:38,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:38,706 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:38,707 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,712 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-04-18 07:36:38,713 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:38,719 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:38,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:36:38,720 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-04-18 07:36:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,732 INFO L93 Difference]: Finished difference Result 124 states and 215 transitions. [2020-04-18 07:36:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 215 transitions. [2020-04-18 07:36:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:38,733 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:36:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1551174461, now seen corresponding path program 3 times [2020-04-18 07:36:38,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349680220] [2020-04-18 07:36:38,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:38,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349680220] [2020-04-18 07:36:38,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:38,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:38,798 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:38,800 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,803 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-04-18 07:36:38,803 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:38,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:36:38,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:36:38,811 INFO L87 Difference]: Start difference. First operand 124 states and 215 transitions. Second operand 3 states. [2020-04-18 07:36:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,824 INFO L93 Difference]: Finished difference Result 171 states and 294 transitions. [2020-04-18 07:36:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 294 transitions. [2020-04-18 07:36:38,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:38,825 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:36:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,825 INFO L82 PathProgramCache]: Analyzing trace with hash 926288199, now seen corresponding path program 4 times [2020-04-18 07:36:38,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321005176] [2020-04-18 07:36:38,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:38,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321005176] [2020-04-18 07:36:38,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:38,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:38,881 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:38,882 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,885 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-04-18 07:36:38,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:38,897 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:36:38,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:36:38,898 INFO L87 Difference]: Start difference. First operand 171 states and 294 transitions. Second operand 3 states. [2020-04-18 07:36:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,910 INFO L93 Difference]: Finished difference Result 221 states and 374 transitions. [2020-04-18 07:36:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 374 transitions. [2020-04-18 07:36:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:38,911 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 07:36:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1636275947, now seen corresponding path program 5 times [2020-04-18 07:36:38,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757445726] [2020-04-18 07:36:38,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:38,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757445726] [2020-04-18 07:36:38,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:38,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:38,959 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:38,960 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:38,965 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 78 transitions. [2020-04-18 07:36:38,965 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:38,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 07:36:38,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:38,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 07:36:38,977 INFO L87 Difference]: Start difference. First operand 221 states and 374 transitions. Second operand 3 states. [2020-04-18 07:36:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:38,982 INFO L93 Difference]: Finished difference Result 231 states and 379 transitions. [2020-04-18 07:36:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 379 transitions. [2020-04-18 07:36:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:36:38,983 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 07:36:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:36:38,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1185214475, now seen corresponding path program 6 times [2020-04-18 07:36:38,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:36:38,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333253436] [2020-04-18 07:36:38,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:36:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:36:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:36:39,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333253436] [2020-04-18 07:36:39,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:36:39,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:36:39,037 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:36:39,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:36:39,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 60 transitions. [2020-04-18 07:36:39,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:36:39,055 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:36:39,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:36:39,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:36:39,055 INFO L87 Difference]: Start difference. First operand 231 states and 379 transitions. Second operand 3 states. [2020-04-18 07:36:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:39,066 INFO L93 Difference]: Finished difference Result 315 states and 504 transitions. [2020-04-18 07:36:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 504 transitions. [2020-04-18 07:36:39,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:39,068 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1831265239] [2020-04-18 07:36:39,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:36:39,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:36:39,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1831265239] [2020-04-18 07:36:39,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 07:36:39,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:36:39,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:36:39,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:36:39,070 INFO L87 Difference]: Start difference. First operand 264 states and 749 transitions. Second operand 7 states. [2020-04-18 07:36:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:36:39,439 INFO L93 Difference]: Finished difference Result 260 states and 692 transitions. [2020-04-18 07:36:39,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 07:36:39,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 07:36:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:36:39,442 INFO L225 Difference]: With dead ends: 260 [2020-04-18 07:36:39,442 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 07:36:39,443 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-04-18 07:36:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 07:36:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 07:36:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 07:36:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 07:36:39,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 07:36:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:36:39,444 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 07:36:39,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 07:36:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 07:36:39,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:36:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:36:39 BasicIcfg [2020-04-18 07:36:39,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:36:39,451 INFO L168 Benchmark]: Toolchain (without parser) took 4417.65 ms. Allocated memory was 145.2 MB in the beginning and 246.9 MB in the end (delta: 101.7 MB). Free memory was 101.5 MB in the beginning and 95.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 107.7 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,452 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.60 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.7 MB in the beginning and 159.9 MB in the end (delta: -60.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.54 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,455 INFO L168 Benchmark]: Boogie Preprocessor took 30.50 ms. Allocated memory is still 201.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,456 INFO L168 Benchmark]: RCFGBuilder took 459.21 ms. Allocated memory is still 201.9 MB. Free memory was 155.9 MB in the beginning and 133.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,456 INFO L168 Benchmark]: TraceAbstraction took 3088.83 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 133.1 MB in the beginning and 95.6 MB in the end (delta: 37.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-04-18 07:36:39,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.60 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.7 MB in the beginning and 159.9 MB in the end (delta: -60.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.54 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.50 ms. Allocated memory is still 201.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.21 ms. Allocated memory is still 201.9 MB. Free memory was 155.9 MB in the beginning and 133.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3088.83 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 133.1 MB in the beginning and 95.6 MB in the end (delta: 37.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 72 ProgramPointsBefore, 46 ProgramPointsAfterwards, 87 TransitionsBefore, 59 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 686 VarBasedMoverChecksPositive, 97 VarBasedMoverChecksNegative, 75 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 4147 CheckedPairsTotal, 38 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 240 SDtfs, 168 SDslu, 203 SDs, 0 SdLazy, 195 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=509occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...