/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-lit/fkp2013-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:30:53,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:30:53,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:30:53,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:30:53,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:30:53,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:30:53,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:30:53,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:30:53,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:30:53,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:30:53,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:30:53,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:30:53,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:30:53,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:30:53,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:30:53,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:30:53,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:30:53,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:30:53,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:30:53,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:30:53,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:30:53,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:30:53,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:30:53,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:30:53,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:30:53,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:30:53,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:30:53,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:30:53,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:30:53,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:30:53,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:30:53,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:30:53,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:30:53,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:30:53,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:30:53,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:30:53,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:30:53,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:30:53,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:30:53,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:30:53,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:30:53,722 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 11:30:53,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:30:53,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:30:53,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:30:53,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:30:53,753 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:30:53,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:30:53,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:30:53,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:30:53,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:30:53,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:30:53,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:30:53,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:30:53,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:30:53,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:30:53,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:30:53,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:30:53,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:30:53,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:30:53,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:30:53,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:30:53,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:30:53,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:30:53,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:30:53,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:30:53,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:30:53,759 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:30:53,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:30:53,760 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:30:53,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:30:53,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:30:54,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:30:54,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:30:54,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:30:54,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:30:54,086 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:30:54,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-04-18 11:30:54,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6dca2e2d/3b566d53e46243a09b662201888f03e3/FLAG00a66b72a [2020-04-18 11:30:54,666 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:30:54,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-04-18 11:30:54,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6dca2e2d/3b566d53e46243a09b662201888f03e3/FLAG00a66b72a [2020-04-18 11:30:54,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6dca2e2d/3b566d53e46243a09b662201888f03e3 [2020-04-18 11:30:54,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:30:55,007 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:30:55,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:30:55,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:30:55,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:30:55,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:30:54" (1/1) ... [2020-04-18 11:30:55,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cc35d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55, skipping insertion in model container [2020-04-18 11:30:55,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:30:54" (1/1) ... [2020-04-18 11:30:55,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:30:55,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:30:55,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:30:55,601 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:30:55,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:30:55,772 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:30:55,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55 WrapperNode [2020-04-18 11:30:55,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:30:55,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:30:55,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:30:55,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:30:55,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:30:55,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:30:55,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:30:55,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:30:55,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (1/1) ... [2020-04-18 11:30:55,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:30:55,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:30:55,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:30:55,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:30:55,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (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 11:30:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 11:30:55,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 11:30:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 11:30:55,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 11:30:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:30:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:30:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:30:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:30:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:30:55,919 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 11:30:56,285 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:30:56,285 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-04-18 11:30:56,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:30:56 BoogieIcfgContainer [2020-04-18 11:30:56,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:30:56,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:30:56,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:30:56,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:30:56,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:30:54" (1/3) ... [2020-04-18 11:30:56,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e9e5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:30:56, skipping insertion in model container [2020-04-18 11:30:56,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:30:55" (2/3) ... [2020-04-18 11:30:56,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e9e5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:30:56, skipping insertion in model container [2020-04-18 11:30:56,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:30:56" (3/3) ... [2020-04-18 11:30:56,299 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2020-04-18 11:30:56,311 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:30:56,311 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:30:56,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:30:56,318 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:30:56,341 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,341 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,341 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,342 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,342 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,343 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,343 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,343 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,343 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,344 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,344 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,345 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,345 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,345 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,346 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,346 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,347 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,347 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,351 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,352 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,352 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,353 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,353 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,361 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,362 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,362 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,362 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,363 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,363 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:56,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:30:56,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:30:56,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:30:56,402 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:30:56,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:30:56,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:30:56,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:30:56,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:30:56,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:30:56,419 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-04-18 11:30:56,421 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-04-18 11:30:56,463 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-04-18 11:30:56,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:30:56,469 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-04-18 11:30:56,472 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-04-18 11:30:56,494 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-04-18 11:30:56,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:30:56,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-04-18 11:30:56,499 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-04-18 11:30:56,500 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:30:57,762 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-04-18 11:30:57,837 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-04-18 11:30:57,837 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-04-18 11:30:57,841 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-04-18 11:30:57,852 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-04-18 11:30:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 11:30:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:30:57,861 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:57,862 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:30:57,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:30:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-04-18 11:30:57,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:57,876 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [269463269] [2020-04-18 11:30:57,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:57,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:30:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:30:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:30:57,902 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 2 times [2020-04-18 11:30:57,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:57,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50865343] [2020-04-18 11:30:57,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:58,091 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 11:30:58,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50865343] [2020-04-18 11:30:58,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:58,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:30:58,094 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:58,095 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:58,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:30:58,096 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:58,106 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:30:58,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:30:58,113 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:30:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:58,117 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:30:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:30:58,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:58,119 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [269463269] [2020-04-18 11:30:58,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:58,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:30:58,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [269463269] [2020-04-18 11:30:58,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:30:58,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:58,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:30:58,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:30:58,138 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-04-18 11:30:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:58,158 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-04-18 11:30:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:30:58,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:30:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:58,169 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:30:58,170 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 11:30:58,171 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:30:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 11:30:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 11:30:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 11:30:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-04-18 11:30:58,205 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-04-18 11:30:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:58,206 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-04-18 11:30:58,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:30:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-04-18 11:30:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:30:58,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:58,207 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:58,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:30:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:58,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-04-18 11:30:58,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:58,208 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1524782326] [2020-04-18 11:30:58,209 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:58,210 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 15 transitions. [2020-04-18 11:30:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:30:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:30:58,211 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1124688655, now seen corresponding path program 2 times [2020-04-18 11:30:58,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:58,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088876147] [2020-04-18 11:30:58,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:58,303 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 11:30:58,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088876147] [2020-04-18 11:30:58,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:58,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:58,304 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:58,307 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:58,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-04-18 11:30:58,313 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:58,317 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:30:58,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:30:58,318 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:30:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:58,323 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 11:30:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 11:30:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:30:58,324 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:30:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 3 times [2020-04-18 11:30:58,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:58,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685112103] [2020-04-18 11:30:58,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:30:58,398 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 11:30:58,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685112103] [2020-04-18 11:30:58,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:30:58,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:30:58,399 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:30:58,400 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:58,402 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 11:30:58,402 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:30:58,407 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:30:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:58,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:58,408 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2020-04-18 11:30:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:58,417 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 11:30:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 11:30:58,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:30:58,418 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1524782326] [2020-04-18 11:30:58,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:30:58,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:30:58,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1524782326] [2020-04-18 11:30:58,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:30:58,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:30:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:30:58,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:58,420 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-04-18 11:30:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:30:58,431 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-04-18 11:30:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:30:58,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 11:30:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:30:58,432 INFO L225 Difference]: With dead ends: 26 [2020-04-18 11:30:58,433 INFO L226 Difference]: Without dead ends: 24 [2020-04-18 11:30:58,435 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:30:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-04-18 11:30:58,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-04-18 11:30:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-04-18 11:30:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-04-18 11:30:58,441 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-04-18 11:30:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:30:58,441 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-04-18 11:30:58,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:30:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-04-18 11:30:58,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:30:58,442 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:58,442 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-18 11:30:58,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:30:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:58,443 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-04-18 11:30:58,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:58,444 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [407144561] [2020-04-18 11:30:58,444 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:58,445 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:30:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:30:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:30:58,448 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:58,448 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 2 times [2020-04-18 11:30:58,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:58,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065232758] [2020-04-18 11:30:58,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:30:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:30:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:30:58,520 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:30:58,521 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:30:58,521 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:30:58,525 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:30:58,526 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 11:30:58,539 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,539 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,539 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,539 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,539 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,540 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,540 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,543 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,543 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,543 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,544 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,545 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,545 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,548 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,549 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,549 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,549 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,549 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,550 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,550 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,550 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,550 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,550 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,551 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,551 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,551 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,551 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,551 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,552 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,552 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,553 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,553 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,553 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,553 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,554 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,558 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,558 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,558 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,559 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,559 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,565 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,565 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,565 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,566 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,566 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,568 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,568 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,572 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,572 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,572 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,572 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,572 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,572 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:30:58,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:30:58,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:30:58,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:30:58,574 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:30:58,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:30:58,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:30:58,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:30:58,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:30:58,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:30:58,578 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-04-18 11:30:58,578 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-04-18 11:30:58,597 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-04-18 11:30:58,597 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 11:30:58,599 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-04-18 11:30:58,601 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-04-18 11:30:58,618 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-04-18 11:30:58,619 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 11:30:58,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-04-18 11:30:58,622 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-04-18 11:30:58,622 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:30:59,911 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-18 11:30:59,974 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-04-18 11:30:59,974 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 11:30:59,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-04-18 11:30:59,986 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-04-18 11:30:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-04-18 11:30:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:30:59,987 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:30:59,987 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:30:59,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:30:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-04-18 11:30:59,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:30:59,989 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1703335929] [2020-04-18 11:30:59,989 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:30:59,989 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:30:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:30:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:30:59,990 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:30:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:30:59,990 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 2 times [2020-04-18 11:30:59,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:30:59,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20269344] [2020-04-18 11:30:59,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:00,040 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 11:31:00,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20269344] [2020-04-18 11:31:00,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:00,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:00,041 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:00,041 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:00,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:00,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:00,050 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:00,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:00,051 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:00,051 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:00,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:00,052 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1703335929] [2020-04-18 11:31:00,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:00,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:00,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1703335929] [2020-04-18 11:31:00,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:00,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:00,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:00,054 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-04-18 11:31:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:00,075 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-04-18 11:31:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:00,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:00,081 INFO L225 Difference]: With dead ends: 185 [2020-04-18 11:31:00,081 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 11:31:00,082 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 11:31:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 11:31:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 11:31:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-04-18 11:31:00,112 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-04-18 11:31:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:00,112 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-04-18 11:31:00,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-04-18 11:31:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:00,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:00,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:00,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-04-18 11:31:00,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:00,118 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1446982460] [2020-04-18 11:31:00,119 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:00,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:00,120 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 2 times [2020-04-18 11:31:00,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:00,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198229303] [2020-04-18 11:31:00,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:00,190 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 11:31:00,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198229303] [2020-04-18 11:31:00,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:00,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:00,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:00,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:00,193 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:00,193 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:00,205 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:00,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:00,206 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2020-04-18 11:31:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:00,227 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 11:31:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 11:31:00,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:00,229 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1446982460] [2020-04-18 11:31:00,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:00,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:00,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1446982460] [2020-04-18 11:31:00,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:00,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:00,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:00,230 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-04-18 11:31:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:00,294 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-04-18 11:31:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:00,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:00,298 INFO L225 Difference]: With dead ends: 205 [2020-04-18 11:31:00,298 INFO L226 Difference]: Without dead ends: 201 [2020-04-18 11:31:00,299 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-04-18 11:31:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-04-18 11:31:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 11:31:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-04-18 11:31:00,335 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-04-18 11:31:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:00,335 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-04-18 11:31:00,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-04-18 11:31:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:00,337 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:00,337 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:00,337 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:00,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-04-18 11:31:00,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:00,338 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1977986311] [2020-04-18 11:31:00,339 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:00,340 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:00,341 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 2 times [2020-04-18 11:31:00,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:00,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869501760] [2020-04-18 11:31:00,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:00,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869501760] [2020-04-18 11:31:00,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:00,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:00,387 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:00,388 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:00,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:00,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:00,403 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:00,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:00,404 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-04-18 11:31:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:00,422 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2020-04-18 11:31:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2020-04-18 11:31:00,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:00,423 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1977986311] [2020-04-18 11:31:00,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:00,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:00,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1977986311] [2020-04-18 11:31:00,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:00,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:00,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:00,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:00,425 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-04-18 11:31:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:00,474 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-04-18 11:31:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:00,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:00,476 INFO L225 Difference]: With dead ends: 189 [2020-04-18 11:31:00,477 INFO L226 Difference]: Without dead ends: 185 [2020-04-18 11:31:00,477 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-04-18 11:31:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-04-18 11:31:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-04-18 11:31:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-04-18 11:31:00,490 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-04-18 11:31:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:00,491 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-04-18 11:31:00,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-04-18 11:31:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:31:00,493 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:00,493 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:00,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:00,494 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-04-18 11:31:00,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:00,494 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1238672497] [2020-04-18 11:31:00,495 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:00,495 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-04-18 11:31:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 11:31:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:31:00,496 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:00,497 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 2 times [2020-04-18 11:31:00,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:00,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673941458] [2020-04-18 11:31:00,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:00,530 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:31:00,531 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:31:00,531 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:31:00,531 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:31:00,533 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 11:31:00,545 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,545 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,546 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,546 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,546 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,546 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,546 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,546 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,547 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,547 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,547 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,547 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,547 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,547 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,548 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,548 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,548 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,549 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,550 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,550 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,550 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,550 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,550 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,551 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,551 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,551 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,551 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,554 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,554 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,554 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,554 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,555 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,555 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,555 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,555 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,555 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,556 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,556 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,556 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,557 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,557 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,558 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,558 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,559 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,559 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,559 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,560 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,561 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,562 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,562 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,562 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,563 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,563 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,563 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,573 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,574 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,574 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,574 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,574 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,579 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,579 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,579 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,579 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,580 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,582 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,582 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,589 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,589 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,589 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,589 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,590 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:00,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 11:31:00,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:00,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:00,598 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:00,598 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:00,598 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:00,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:00,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:00,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:00,601 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-04-18 11:31:00,601 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-04-18 11:31:00,619 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-04-18 11:31:00,620 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 11:31:00,621 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-04-18 11:31:00,624 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-04-18 11:31:00,640 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-04-18 11:31:00,640 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 11:31:00,642 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-04-18 11:31:00,645 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-04-18 11:31:00,645 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:02,132 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-04-18 11:31:02,305 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-04-18 11:31:02,305 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-04-18 11:31:02,305 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-04-18 11:31:02,333 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-04-18 11:31:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-04-18 11:31:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:02,334 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:02,334 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:02,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-04-18 11:31:02,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:02,335 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1322428119] [2020-04-18 11:31:02,336 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,336 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:02,337 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:02,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,337 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 2 times [2020-04-18 11:31:02,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:02,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250258705] [2020-04-18 11:31:02,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:02,367 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 11:31:02,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250258705] [2020-04-18 11:31:02,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:02,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:02,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:02,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,369 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:02,370 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:02,373 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:02,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:02,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:02,374 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,374 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:02,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:02,375 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1322428119] [2020-04-18 11:31:02,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:02,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:02,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1322428119] [2020-04-18 11:31:02,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:02,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:02,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:02,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:02,377 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-04-18 11:31:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,406 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-04-18 11:31:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:02,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:02,413 INFO L225 Difference]: With dead ends: 600 [2020-04-18 11:31:02,414 INFO L226 Difference]: Without dead ends: 559 [2020-04-18 11:31:02,414 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-04-18 11:31:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-04-18 11:31:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-04-18 11:31:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-04-18 11:31:02,457 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-04-18 11:31:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:02,461 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-04-18 11:31:02,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-04-18 11:31:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:02,462 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:02,462 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:02,463 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,467 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-04-18 11:31:02,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:02,467 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1399857321] [2020-04-18 11:31:02,468 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,468 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:02,469 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1142033206, now seen corresponding path program 2 times [2020-04-18 11:31:02,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:02,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-18 11:31:02,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:02,514 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 11:31:02,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-18 11:31:02,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:02,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:02,515 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:02,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:31:02,518 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:02,521 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:02,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:02,521 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:31:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,525 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:02,526 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 3 times [2020-04-18 11:31:02,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:02,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88744839] [2020-04-18 11:31:02,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:02,584 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 11:31:02,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88744839] [2020-04-18 11:31:02,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:02,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:02,585 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:02,586 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,587 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:02,587 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:02,597 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:02,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:02,598 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:31:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,621 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:02,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:02,622 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1399857321] [2020-04-18 11:31:02,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:02,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:02,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1399857321] [2020-04-18 11:31:02,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:02,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:02,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:02,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:02,623 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-04-18 11:31:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,693 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-04-18 11:31:02,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:02,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:02,701 INFO L225 Difference]: With dead ends: 817 [2020-04-18 11:31:02,701 INFO L226 Difference]: Without dead ends: 812 [2020-04-18 11:31:02,701 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-04-18 11:31:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-04-18 11:31:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-04-18 11:31:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-04-18 11:31:02,731 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-04-18 11:31:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:02,732 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-04-18 11:31:02,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-04-18 11:31:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:02,733 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:02,733 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:02,733 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,733 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-04-18 11:31:02,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:02,734 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [847582741] [2020-04-18 11:31:02,734 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,735 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:02,736 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1586901388, now seen corresponding path program 2 times [2020-04-18 11:31:02,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:02,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482336660] [2020-04-18 11:31:02,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:02,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482336660] [2020-04-18 11:31:02,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:02,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:02,758 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:02,759 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,761 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:31:02,761 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:02,765 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:02,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:02,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:02,766 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:31:02,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,769 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:02,770 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 3 times [2020-04-18 11:31:02,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:02,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937179183] [2020-04-18 11:31:02,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:02,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937179183] [2020-04-18 11:31:02,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:02,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:02,824 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:02,825 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,827 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:02,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:02,838 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:02,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:02,839 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:31:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,859 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:02,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:02,860 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [847582741] [2020-04-18 11:31:02,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:02,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:02,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [847582741] [2020-04-18 11:31:02,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:02,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:02,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:02,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:02,862 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-04-18 11:31:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:02,929 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-04-18 11:31:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:02,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:02,936 INFO L225 Difference]: With dead ends: 843 [2020-04-18 11:31:02,936 INFO L226 Difference]: Without dead ends: 836 [2020-04-18 11:31:02,936 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-04-18 11:31:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-04-18 11:31:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-04-18 11:31:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-04-18 11:31:02,971 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-04-18 11:31:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:02,972 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-04-18 11:31:02,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-04-18 11:31:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:02,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:02,973 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:02,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:02,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,973 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-04-18 11:31:02,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:02,974 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [570737764] [2020-04-18 11:31:02,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:02,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:31:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:31:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:02,979 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:02,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1442093623, now seen corresponding path program 2 times [2020-04-18 11:31:02,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:02,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374026406] [2020-04-18 11:31:02,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:03,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374026406] [2020-04-18 11:31:03,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:03,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:03,009 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:03,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:03,015 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:31:03,015 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:03,023 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:03,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:03,023 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:31:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:03,032 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:31:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:31:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:03,032 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:03,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2771455, now seen corresponding path program 3 times [2020-04-18 11:31:03,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:03,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001933671] [2020-04-18 11:31:03,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:03,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001933671] [2020-04-18 11:31:03,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:03,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:03,096 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:03,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:03,105 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:31:03,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:03,120 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:31:03,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:03,121 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 5 states. [2020-04-18 11:31:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:03,156 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:31:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:31:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:03,157 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 4 times [2020-04-18 11:31:03,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:03,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847833420] [2020-04-18 11:31:03,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:03,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847833420] [2020-04-18 11:31:03,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183911257] [2020-04-18 11:31:03,218 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:03,292 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:03,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:03,295 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:03,297 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:03,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:03,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:03,332 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:03,333 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:03,336 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:31:03,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:03,366 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:03,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:03,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:03,367 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 9 states. [2020-04-18 11:31:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:03,466 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:31:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:31:03,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:03,466 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 5 times [2020-04-18 11:31:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:03,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634467956] [2020-04-18 11:31:03,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:03,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634467956] [2020-04-18 11:31:03,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:03,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:03,528 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:03,530 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:03,533 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:31:03,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:03,553 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:03,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:03,554 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:31:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:03,656 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:31:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:31:03,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:03,657 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [570737764] [2020-04-18 11:31:03,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:03,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:03,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [570737764] [2020-04-18 11:31:03,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:03,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:03,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:03,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:03,658 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 11 states. [2020-04-18 11:31:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:03,873 INFO L93 Difference]: Finished difference Result 1142 states and 2948 transitions. [2020-04-18 11:31:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:03,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:31:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:03,883 INFO L225 Difference]: With dead ends: 1142 [2020-04-18 11:31:03,883 INFO L226 Difference]: Without dead ends: 1127 [2020-04-18 11:31:03,884 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-04-18 11:31:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 536. [2020-04-18 11:31:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-04-18 11:31:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-04-18 11:31:03,945 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-04-18 11:31:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:03,946 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-04-18 11:31:03,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-04-18 11:31:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:03,947 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:03,947 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:04,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:04,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:04,152 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-04-18 11:31:04,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:04,153 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [257556785] [2020-04-18 11:31:04,154 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:04,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:31:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:31:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:04,157 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1382437854, now seen corresponding path program 2 times [2020-04-18 11:31:04,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:04,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038512538] [2020-04-18 11:31:04,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:04,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038512538] [2020-04-18 11:31:04,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:04,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:04,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:04,184 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:04,187 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:31:04,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:04,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:04,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:04,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:04,197 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:31:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:04,206 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:04,207 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:04,208 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 3 times [2020-04-18 11:31:04,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:04,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704986845] [2020-04-18 11:31:04,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:04,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704986845] [2020-04-18 11:31:04,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:04,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:04,256 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:04,257 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:04,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:31:04,259 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:04,287 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:04,288 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:31:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:04,337 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:04,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:04,338 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [257556785] [2020-04-18 11:31:04,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:04,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:04,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [257556785] [2020-04-18 11:31:04,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:04,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:04,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:04,339 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-04-18 11:31:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:04,424 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-04-18 11:31:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:04,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:31:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:04,430 INFO L225 Difference]: With dead ends: 736 [2020-04-18 11:31:04,430 INFO L226 Difference]: Without dead ends: 728 [2020-04-18 11:31:04,431 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-04-18 11:31:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-04-18 11:31:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-04-18 11:31:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-04-18 11:31:04,456 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-04-18 11:31:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:04,457 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-04-18 11:31:04,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-04-18 11:31:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:31:04,458 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:04,458 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:04,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-04-18 11:31:04,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:04,459 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [729456840] [2020-04-18 11:31:04,460 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:04,461 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-04-18 11:31:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 11:31:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:31:04,462 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 2 times [2020-04-18 11:31:04,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:04,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728495422] [2020-04-18 11:31:04,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:04,498 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:31:04,499 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:31:04,499 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:31:04,500 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:31:04,500 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 11:31:04,518 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,518 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,520 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,521 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,521 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,521 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,521 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,521 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,521 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,522 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,523 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,523 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,523 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,523 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,523 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,523 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,524 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,524 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,524 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,524 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,524 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,530 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,530 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,531 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,531 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,531 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,531 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,531 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,533 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,533 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,533 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,534 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,534 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,534 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,534 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,535 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,537 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,538 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,538 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,538 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,538 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,540 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,541 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,541 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,541 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,541 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,543 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,544 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,544 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,544 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,545 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,546 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,546 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,546 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,546 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,546 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,548 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,548 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,548 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,548 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,548 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,549 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,550 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,550 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,550 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,550 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,551 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,551 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,562 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,562 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:04,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 11:31:04,566 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:04,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:04,566 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:04,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:04,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:04,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:04,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:04,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:04,568 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-04-18 11:31:04,568 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-04-18 11:31:04,587 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-04-18 11:31:04,587 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 11:31:04,589 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-04-18 11:31:04,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-04-18 11:31:04,610 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-04-18 11:31:04,610 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 11:31:04,611 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-04-18 11:31:04,615 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-04-18 11:31:04,616 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:06,397 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-04-18 11:31:06,463 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-04-18 11:31:06,463 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-04-18 11:31:06,464 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-04-18 11:31:06,579 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-04-18 11:31:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-04-18 11:31:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:06,580 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:06,580 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:06,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-04-18 11:31:06,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:06,581 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [311763637] [2020-04-18 11:31:06,581 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:06,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:06,582 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 2 times [2020-04-18 11:31:06,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:06,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321231935] [2020-04-18 11:31:06,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:06,600 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 11:31:06,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321231935] [2020-04-18 11:31:06,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:06,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:06,601 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:06,601 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:06,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:06,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:06,605 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:06,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:06,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:06,606 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:06,606 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:06,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:06,607 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [311763637] [2020-04-18 11:31:06,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:06,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:06,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [311763637] [2020-04-18 11:31:06,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:06,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:06,609 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-04-18 11:31:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:06,654 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-04-18 11:31:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:06,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:06,672 INFO L225 Difference]: With dead ends: 1889 [2020-04-18 11:31:06,672 INFO L226 Difference]: Without dead ends: 1767 [2020-04-18 11:31:06,672 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-04-18 11:31:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-04-18 11:31:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-04-18 11:31:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-04-18 11:31:06,800 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-04-18 11:31:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:06,801 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-04-18 11:31:06,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-04-18 11:31:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:06,801 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:06,801 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:06,802 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:06,802 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-04-18 11:31:06,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:06,802 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1981680663] [2020-04-18 11:31:06,803 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:06,803 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:06,803 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:06,804 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:06,804 INFO L82 PathProgramCache]: Analyzing trace with hash 773468699, now seen corresponding path program 2 times [2020-04-18 11:31:06,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:06,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831537041] [2020-04-18 11:31:06,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:06,822 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 11:31:06,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831537041] [2020-04-18 11:31:06,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:06,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:06,823 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:06,823 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:06,824 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:31:06,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:06,827 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:06,828 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:31:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:06,831 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:06,831 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:06,832 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 3 times [2020-04-18 11:31:06,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:06,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067298294] [2020-04-18 11:31:06,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:06,862 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 11:31:06,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067298294] [2020-04-18 11:31:06,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:06,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:06,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:06,864 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:06,864 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:06,865 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:06,879 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:06,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:06,879 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:31:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:06,895 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:06,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:06,896 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1981680663] [2020-04-18 11:31:06,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:06,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:06,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1981680663] [2020-04-18 11:31:06,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:06,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:06,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:06,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:06,897 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-04-18 11:31:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:06,971 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-04-18 11:31:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:06,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:06,996 INFO L225 Difference]: With dead ends: 2905 [2020-04-18 11:31:06,996 INFO L226 Difference]: Without dead ends: 2899 [2020-04-18 11:31:06,996 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-04-18 11:31:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-04-18 11:31:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-04-18 11:31:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-04-18 11:31:07,111 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-04-18 11:31:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:07,112 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-04-18 11:31:07,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-04-18 11:31:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:07,112 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:07,113 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:07,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-04-18 11:31:07,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:07,113 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2047652781] [2020-04-18 11:31:07,114 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,114 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:07,115 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1718911887, now seen corresponding path program 2 times [2020-04-18 11:31:07,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:07,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442067421] [2020-04-18 11:31:07,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:07,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442067421] [2020-04-18 11:31:07,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:07,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:07,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:07,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:31:07,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:07,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:07,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:07,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:07,148 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:31:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:07,152 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:07,152 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 3 times [2020-04-18 11:31:07,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:07,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712163580] [2020-04-18 11:31:07,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:07,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712163580] [2020-04-18 11:31:07,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:07,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:07,202 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:07,203 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,204 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:07,204 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:07,213 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:07,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:07,213 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:31:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:07,228 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:07,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:07,229 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2047652781] [2020-04-18 11:31:07,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:07,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:07,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2047652781] [2020-04-18 11:31:07,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:07,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:07,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:07,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:07,230 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-04-18 11:31:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:07,310 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-04-18 11:31:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:07,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:07,338 INFO L225 Difference]: With dead ends: 3204 [2020-04-18 11:31:07,338 INFO L226 Difference]: Without dead ends: 3194 [2020-04-18 11:31:07,338 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-04-18 11:31:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-04-18 11:31:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-04-18 11:31:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-04-18 11:31:07,450 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-04-18 11:31:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:07,450 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-04-18 11:31:07,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-04-18 11:31:07,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:07,451 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:07,451 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:07,451 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-04-18 11:31:07,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:07,452 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2067211509] [2020-04-18 11:31:07,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,455 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:31:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:31:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:07,456 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,456 INFO L82 PathProgramCache]: Analyzing trace with hash 746064128, now seen corresponding path program 2 times [2020-04-18 11:31:07,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:07,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086479822] [2020-04-18 11:31:07,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:07,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086479822] [2020-04-18 11:31:07,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:07,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:07,480 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:07,481 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,484 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:31:07,484 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:07,489 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:07,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:07,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:07,489 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:31:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:07,497 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:31:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:31:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:07,497 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1842869288, now seen corresponding path program 3 times [2020-04-18 11:31:07,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:07,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692270455] [2020-04-18 11:31:07,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:07,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692270455] [2020-04-18 11:31:07,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:07,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:07,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:07,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,551 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:31:07,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:07,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:07,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:07,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:07,563 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 5 states. [2020-04-18 11:31:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:07,599 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:31:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:31:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:07,600 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 4 times [2020-04-18 11:31:07,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:07,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704511432] [2020-04-18 11:31:07,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:07,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704511432] [2020-04-18 11:31:07,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861554993] [2020-04-18 11:31:07,663 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:07,781 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:07,781 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:07,782 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:07,783 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:07,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:07,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:07,797 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:07,798 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,801 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:31:07,801 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:07,830 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:07,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:07,830 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 9 states. [2020-04-18 11:31:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:07,912 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:31:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:31:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:07,913 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 5 times [2020-04-18 11:31:07,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:07,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983331427] [2020-04-18 11:31:07,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:07,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983331427] [2020-04-18 11:31:07,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:07,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:07,955 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:07,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:07,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:31:07,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:07,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:07,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:07,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:07,977 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:31:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:08,089 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:31:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:31:08,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:08,090 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2067211509] [2020-04-18 11:31:08,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:08,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:08,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2067211509] [2020-04-18 11:31:08,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:08,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:08,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:08,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:08,091 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 11 states. [2020-04-18 11:31:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:08,364 INFO L93 Difference]: Finished difference Result 5101 states and 16214 transitions. [2020-04-18 11:31:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:08,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:31:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:08,411 INFO L225 Difference]: With dead ends: 5101 [2020-04-18 11:31:08,411 INFO L226 Difference]: Without dead ends: 5080 [2020-04-18 11:31:08,412 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5080 states. [2020-04-18 11:31:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5080 to 2035. [2020-04-18 11:31:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-04-18 11:31:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-04-18 11:31:08,555 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-04-18 11:31:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:08,557 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-04-18 11:31:08,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-04-18 11:31:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:08,558 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:08,558 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:08,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:08,763 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:08,764 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-04-18 11:31:08,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:08,765 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [425422901] [2020-04-18 11:31:08,765 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:08,767 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:31:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:31:08,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:08,767 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:08,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1378740238, now seen corresponding path program 2 times [2020-04-18 11:31:08,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:08,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415550724] [2020-04-18 11:31:08,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:08,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415550724] [2020-04-18 11:31:08,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:08,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:08,786 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:08,787 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:08,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:31:08,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:08,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:08,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:08,794 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:31:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:08,797 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:08,798 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 3 times [2020-04-18 11:31:08,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:08,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438137412] [2020-04-18 11:31:08,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:08,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438137412] [2020-04-18 11:31:08,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:08,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:08,841 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:08,842 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:08,844 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:31:08,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:08,855 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:08,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:08,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:08,855 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:31:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:08,873 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:08,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:08,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:08,873 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [425422901] [2020-04-18 11:31:08,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:08,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:08,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [425422901] [2020-04-18 11:31:08,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:08,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:08,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:08,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:08,875 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-04-18 11:31:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:08,939 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-04-18 11:31:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:08,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:31:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:08,953 INFO L225 Difference]: With dead ends: 3265 [2020-04-18 11:31:08,953 INFO L226 Difference]: Without dead ends: 3250 [2020-04-18 11:31:08,953 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-04-18 11:31:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-04-18 11:31:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-04-18 11:31:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-04-18 11:31:09,049 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-04-18 11:31:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:09,049 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-04-18 11:31:09,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-04-18 11:31:09,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:09,051 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:09,051 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:09,051 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:09,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:09,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-04-18 11:31:09,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:09,052 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [353184502] [2020-04-18 11:31:09,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:09,055 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 151 transitions. [2020-04-18 11:31:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:31:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:09,056 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1222685441, now seen corresponding path program 2 times [2020-04-18 11:31:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:09,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591289105] [2020-04-18 11:31:09,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:09,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591289105] [2020-04-18 11:31:09,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:09,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:09,075 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:09,076 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:09,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 101 transitions. [2020-04-18 11:31:09,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:09,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:09,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:09,088 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:31:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:09,096 INFO L93 Difference]: Finished difference Result 89 states and 163 transitions. [2020-04-18 11:31:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 163 transitions. [2020-04-18 11:31:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:09,097 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:09,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash -320724009, now seen corresponding path program 3 times [2020-04-18 11:31:09,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:09,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326183570] [2020-04-18 11:31:09,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:09,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326183570] [2020-04-18 11:31:09,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:09,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:09,182 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:09,183 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:09,187 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 69 transitions. [2020-04-18 11:31:09,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:09,201 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:09,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:09,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:09,202 INFO L87 Difference]: Start difference. First operand 89 states and 163 transitions. Second operand 5 states. [2020-04-18 11:31:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:09,235 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-04-18 11:31:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-04-18 11:31:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:09,236 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:09,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 4 times [2020-04-18 11:31:09,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:09,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137530355] [2020-04-18 11:31:09,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:09,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137530355] [2020-04-18 11:31:09,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162160850] [2020-04-18 11:31:09,278 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:09,353 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:09,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:09,354 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:09,356 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:09,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:09,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:09,372 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:09,374 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:09,378 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-04-18 11:31:09,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:09,405 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:09,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:09,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:09,406 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 9 states. [2020-04-18 11:31:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:09,497 INFO L93 Difference]: Finished difference Result 97 states and 168 transitions. [2020-04-18 11:31:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 168 transitions. [2020-04-18 11:31:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:09,498 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 5 times [2020-04-18 11:31:09,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:09,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68558533] [2020-04-18 11:31:09,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:09,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68558533] [2020-04-18 11:31:09,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:09,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:09,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:09,551 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:09,554 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:31:09,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:09,571 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:09,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:09,572 INFO L87 Difference]: Start difference. First operand 97 states and 168 transitions. Second operand 7 states. [2020-04-18 11:31:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:09,661 INFO L93 Difference]: Finished difference Result 100 states and 171 transitions. [2020-04-18 11:31:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 171 transitions. [2020-04-18 11:31:09,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:09,662 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [353184502] [2020-04-18 11:31:09,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:09,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:09,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [353184502] [2020-04-18 11:31:09,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:09,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:09,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:09,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:09,663 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 11 states. [2020-04-18 11:31:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:09,923 INFO L93 Difference]: Finished difference Result 5387 states and 17317 transitions. [2020-04-18 11:31:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:09,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 11:31:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:09,943 INFO L225 Difference]: With dead ends: 5387 [2020-04-18 11:31:09,943 INFO L226 Difference]: Without dead ends: 5358 [2020-04-18 11:31:09,944 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2020-04-18 11:31:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 2153. [2020-04-18 11:31:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-04-18 11:31:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 8255 transitions. [2020-04-18 11:31:10,064 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 8255 transitions. Word has length 19 [2020-04-18 11:31:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:10,064 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 8255 transitions. [2020-04-18 11:31:10,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 8255 transitions. [2020-04-18 11:31:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:10,065 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:10,065 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:10,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:10,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-04-18 11:31:10,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:10,280 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [188723086] [2020-04-18 11:31:10,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:10,282 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:31:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:31:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:10,283 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:10,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1006426907, now seen corresponding path program 2 times [2020-04-18 11:31:10,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:10,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122927455] [2020-04-18 11:31:10,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:10,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122927455] [2020-04-18 11:31:10,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:10,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:10,304 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:10,307 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:10,310 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 73 transitions. [2020-04-18 11:31:10,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:10,314 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:10,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:10,315 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:31:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:10,322 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2020-04-18 11:31:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-04-18 11:31:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:10,323 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:10,324 INFO L82 PathProgramCache]: Analyzing trace with hash 764819305, now seen corresponding path program 3 times [2020-04-18 11:31:10,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:10,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251928335] [2020-04-18 11:31:10,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:10,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251928335] [2020-04-18 11:31:10,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:10,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:10,371 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:10,372 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:10,375 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 45 transitions. [2020-04-18 11:31:10,376 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:10,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:10,384 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 5 states. [2020-04-18 11:31:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:10,416 INFO L93 Difference]: Finished difference Result 76 states and 124 transitions. [2020-04-18 11:31:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 124 transitions. [2020-04-18 11:31:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:10,417 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:10,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:10,418 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 4 times [2020-04-18 11:31:10,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:10,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133697420] [2020-04-18 11:31:10,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:10,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133697420] [2020-04-18 11:31:10,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109988309] [2020-04-18 11:31:10,462 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:10,544 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:10,545 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:10,604 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:10,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:10,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:10,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:10,659 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:10,660 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:10,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-04-18 11:31:10,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:10,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:10,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:10,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:10,697 INFO L87 Difference]: Start difference. First operand 76 states and 124 transitions. Second operand 9 states. [2020-04-18 11:31:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:10,804 INFO L93 Difference]: Finished difference Result 77 states and 124 transitions. [2020-04-18 11:31:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 124 transitions. [2020-04-18 11:31:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:10,805 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 5 times [2020-04-18 11:31:10,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:10,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93106095] [2020-04-18 11:31:10,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93106095] [2020-04-18 11:31:10,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:10,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:10,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:10,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:10,868 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:31:10,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:10,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:10,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:10,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:10,895 INFO L87 Difference]: Start difference. First operand 77 states and 124 transitions. Second operand 7 states. [2020-04-18 11:31:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:11,008 INFO L93 Difference]: Finished difference Result 80 states and 127 transitions. [2020-04-18 11:31:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 127 transitions. [2020-04-18 11:31:11,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:11,009 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [188723086] [2020-04-18 11:31:11,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:11,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:11,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [188723086] [2020-04-18 11:31:11,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:11,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:11,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:11,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:11,011 INFO L87 Difference]: Start difference. First operand 2153 states and 8255 transitions. Second operand 11 states. [2020-04-18 11:31:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:11,243 INFO L93 Difference]: Finished difference Result 5272 states and 17008 transitions. [2020-04-18 11:31:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:11,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 11:31:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:11,265 INFO L225 Difference]: With dead ends: 5272 [2020-04-18 11:31:11,265 INFO L226 Difference]: Without dead ends: 5238 [2020-04-18 11:31:11,266 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2020-04-18 11:31:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 2150. [2020-04-18 11:31:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-04-18 11:31:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-04-18 11:31:11,380 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-04-18 11:31:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:11,381 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-04-18 11:31:11,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-04-18 11:31:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:11,383 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:11,383 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:11,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:11,587 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-04-18 11:31:11,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:11,587 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1589512712] [2020-04-18 11:31:11,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:11,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 405 transitions. [2020-04-18 11:31:11,592 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-04-18 11:31:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:11,593 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1305538154, now seen corresponding path program 2 times [2020-04-18 11:31:11,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:11,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748817246] [2020-04-18 11:31:11,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:11,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748817246] [2020-04-18 11:31:11,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:11,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:11,609 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:11,611 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:11,618 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 119 transitions. [2020-04-18 11:31:11,618 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:11,622 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:11,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:11,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:11,623 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-04-18 11:31:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:11,635 INFO L93 Difference]: Finished difference Result 203 states and 475 transitions. [2020-04-18 11:31:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 475 transitions. [2020-04-18 11:31:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:11,636 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2103995794, now seen corresponding path program 3 times [2020-04-18 11:31:11,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:11,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420052011] [2020-04-18 11:31:11,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:11,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420052011] [2020-04-18 11:31:11,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:11,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:11,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:11,666 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:11,672 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 99 transitions. [2020-04-18 11:31:11,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:11,683 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:11,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:11,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:11,684 INFO L87 Difference]: Start difference. First operand 203 states and 475 transitions. Second operand 5 states. [2020-04-18 11:31:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:11,734 INFO L93 Difference]: Finished difference Result 266 states and 576 transitions. [2020-04-18 11:31:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 576 transitions. [2020-04-18 11:31:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:11,735 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:11,735 INFO L82 PathProgramCache]: Analyzing trace with hash 887137816, now seen corresponding path program 4 times [2020-04-18 11:31:11,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:11,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596752725] [2020-04-18 11:31:11,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:11,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596752725] [2020-04-18 11:31:11,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422256529] [2020-04-18 11:31:11,774 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:11,848 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:11,848 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:11,850 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:11,851 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:11,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:11,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:31:11,876 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:11,877 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:11,885 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 79 transitions. [2020-04-18 11:31:11,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:11,916 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:11,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:11,917 INFO L87 Difference]: Start difference. First operand 266 states and 576 transitions. Second operand 9 states. [2020-04-18 11:31:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:12,135 INFO L93 Difference]: Finished difference Result 312 states and 632 transitions. [2020-04-18 11:31:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 632 transitions. [2020-04-18 11:31:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:12,136 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 5 times [2020-04-18 11:31:12,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:12,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684543962] [2020-04-18 11:31:12,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:12,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684543962] [2020-04-18 11:31:12,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886072793] [2020-04-18 11:31:12,195 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:12,275 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:31:12,275 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:12,276 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:12,277 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:12,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:12,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:12,327 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:12,330 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:12,339 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-04-18 11:31:12,411 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:12,430 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:12,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:12,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:31:12,431 INFO L87 Difference]: Start difference. First operand 312 states and 632 transitions. Second operand 11 states. [2020-04-18 11:31:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:12,900 INFO L93 Difference]: Finished difference Result 329 states and 643 transitions. [2020-04-18 11:31:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 643 transitions. [2020-04-18 11:31:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:12,901 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:12,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 6 times [2020-04-18 11:31:12,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:12,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034709631] [2020-04-18 11:31:12,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:12,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034709631] [2020-04-18 11:31:12,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385370041] [2020-04-18 11:31:12,957 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:13,027 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-18 11:31:13,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:13,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:13,030 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:13,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:13,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:13,052 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:13,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:13,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:31:13,060 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:13,084 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:13,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:13,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:31:13,085 INFO L87 Difference]: Start difference. First operand 329 states and 643 transitions. Second operand 11 states. [2020-04-18 11:31:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:13,637 INFO L93 Difference]: Finished difference Result 358 states and 677 transitions. [2020-04-18 11:31:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 677 transitions. [2020-04-18 11:31:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:13,639 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:31:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:13,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1077008290, now seen corresponding path program 7 times [2020-04-18 11:31:13,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:13,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956305586] [2020-04-18 11:31:13,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:13,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956305586] [2020-04-18 11:31:13,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:13,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:31:13,698 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:13,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:13,705 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 63 transitions. [2020-04-18 11:31:13,705 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:13,736 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:31:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:13,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=644, Invalid=2436, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 11:31:13,738 INFO L87 Difference]: Start difference. First operand 358 states and 677 transitions. Second operand 7 states. [2020-04-18 11:31:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:13,921 INFO L93 Difference]: Finished difference Result 403 states and 735 transitions. [2020-04-18 11:31:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 735 transitions. [2020-04-18 11:31:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:13,923 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:31:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 8 times [2020-04-18 11:31:13,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:13,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907469796] [2020-04-18 11:31:13,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907469796] [2020-04-18 11:31:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808028707] [2020-04-18 11:31:13,979 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:14,062 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:31:14,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:14,063 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:14,064 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:14,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:14,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:14,092 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:14,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:14,098 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:31:14,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:14,116 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:31:14,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:14,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=3386, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 11:31:14,118 INFO L87 Difference]: Start difference. First operand 403 states and 735 transitions. Second operand 11 states. [2020-04-18 11:31:14,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:14,629 INFO L93 Difference]: Finished difference Result 406 states and 736 transitions. [2020-04-18 11:31:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 736 transitions. [2020-04-18 11:31:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:14,631 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:31:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:14,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 9 times [2020-04-18 11:31:14,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:14,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889883935] [2020-04-18 11:31:14,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:14,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889883935] [2020-04-18 11:31:14,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51260037] [2020-04-18 11:31:14,725 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:14,797 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:31:14,797 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:14,798 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:14,800 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:14,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:14,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:14,832 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:14,834 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:14,838 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-04-18 11:31:14,839 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:14,855 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:14,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:14,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=4925, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 11:31:14,857 INFO L87 Difference]: Start difference. First operand 406 states and 736 transitions. Second operand 11 states. [2020-04-18 11:31:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:15,371 INFO L93 Difference]: Finished difference Result 441 states and 773 transitions. [2020-04-18 11:31:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 773 transitions. [2020-04-18 11:31:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:15,373 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:31:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 10 times [2020-04-18 11:31:15,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:15,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960929602] [2020-04-18 11:31:15,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:15,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960929602] [2020-04-18 11:31:15,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:15,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:31:15,441 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:15,442 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:15,445 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:31:15,446 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:15,467 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:15,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:15,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1516, Invalid=7604, Unknown=0, NotChecked=0, Total=9120 [2020-04-18 11:31:15,470 INFO L87 Difference]: Start difference. First operand 441 states and 773 transitions. Second operand 9 states. [2020-04-18 11:31:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:15,932 INFO L93 Difference]: Finished difference Result 441 states and 773 transitions. [2020-04-18 11:31:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 773 transitions. [2020-04-18 11:31:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:15,933 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:31:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:15,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 11 times [2020-04-18 11:31:15,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:15,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845840942] [2020-04-18 11:31:15,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:15,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845840942] [2020-04-18 11:31:15,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:15,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:31:15,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:15,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:15,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:31:15,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:15,996 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:16,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1930, Invalid=10726, Unknown=0, NotChecked=0, Total=12656 [2020-04-18 11:31:16,000 INFO L87 Difference]: Start difference. First operand 441 states and 773 transitions. Second operand 9 states. [2020-04-18 11:31:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:16,438 INFO L93 Difference]: Finished difference Result 441 states and 773 transitions. [2020-04-18 11:31:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 773 transitions. [2020-04-18 11:31:16,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:16,440 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1589512712] [2020-04-18 11:31:16,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:16,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:31:16,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1589512712] [2020-04-18 11:31:16,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 11:31:16,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 11:31:16,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2359, Invalid=13897, Unknown=0, NotChecked=0, Total=16256 [2020-04-18 11:31:16,446 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 18 states. [2020-04-18 11:31:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:17,948 INFO L93 Difference]: Finished difference Result 8475 states and 24418 transitions. [2020-04-18 11:31:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-04-18 11:31:17,948 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-04-18 11:31:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:17,983 INFO L225 Difference]: With dead ends: 8475 [2020-04-18 11:31:17,983 INFO L226 Difference]: Without dead ends: 8417 [2020-04-18 11:31:17,987 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11609 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4181, Invalid=23875, Unknown=0, NotChecked=0, Total=28056 [2020-04-18 11:31:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2020-04-18 11:31:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 1800. [2020-04-18 11:31:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-04-18 11:31:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-04-18 11:31:18,145 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-04-18 11:31:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:18,146 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-04-18 11:31:18,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 11:31:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-04-18 11:31:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:18,148 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:18,148 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:19,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:19,157 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-04-18 11:31:19,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:19,158 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [63059740] [2020-04-18 11:31:19,159 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:19,160 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-04-18 11:31:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 11:31:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:19,161 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:19,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:19,161 INFO L82 PathProgramCache]: Analyzing trace with hash 603296645, now seen corresponding path program 2 times [2020-04-18 11:31:19,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:19,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620926357] [2020-04-18 11:31:19,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:19,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620926357] [2020-04-18 11:31:19,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:19,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:19,184 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:19,185 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:19,189 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:31:19,189 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:19,192 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:19,193 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-04-18 11:31:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:19,196 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:31:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:31:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:19,196 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 3 times [2020-04-18 11:31:19,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:19,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663048653] [2020-04-18 11:31:19,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:19,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663048653] [2020-04-18 11:31:19,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:19,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:19,222 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:19,224 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:19,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:31:19,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:19,236 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:19,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:19,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:19,236 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 5 states. [2020-04-18 11:31:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:19,251 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:31:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:31:19,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:19,252 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [63059740] [2020-04-18 11:31:19,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:19,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:19,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [63059740] [2020-04-18 11:31:19,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:19,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:19,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:19,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:19,253 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-04-18 11:31:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:19,314 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-04-18 11:31:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:19,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:31:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:19,323 INFO L225 Difference]: With dead ends: 2762 [2020-04-18 11:31:19,324 INFO L226 Difference]: Without dead ends: 2746 [2020-04-18 11:31:19,324 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-04-18 11:31:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-04-18 11:31:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-04-18 11:31:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-04-18 11:31:19,457 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-04-18 11:31:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:19,457 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-04-18 11:31:19,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-04-18 11:31:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:31:19,460 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:19,460 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:19,460 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:19,461 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-04-18 11:31:19,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:19,461 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1199340868] [2020-04-18 11:31:19,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:19,463 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 11:31:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 11:31:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:31:19,464 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:19,464 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 2 times [2020-04-18 11:31:19,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:19,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349317061] [2020-04-18 11:31:19,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:19,488 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:31:19,488 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:31:19,488 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:31:19,489 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:31:19,489 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 11:31:19,503 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,503 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,503 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,504 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,504 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,504 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,504 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,504 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,505 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,505 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,505 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,505 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,505 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,506 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,507 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,508 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,509 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,510 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,511 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,512 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,512 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,512 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,512 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,512 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,512 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,513 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,513 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,513 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,513 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,513 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,513 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,514 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,519 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,519 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,521 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,521 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,522 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,523 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,523 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,524 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,524 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,524 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,525 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,525 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,526 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,526 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,526 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,527 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,527 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,528 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,528 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,528 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,530 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,530 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,531 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,531 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,534 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,534 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,535 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,535 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,535 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,535 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,537 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,537 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,538 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,538 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,538 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,538 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,539 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,539 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,539 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,540 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,540 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,540 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:19,541 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 11:31:19,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:19,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:19,542 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:19,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:19,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:19,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:19,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:19,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:19,544 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-04-18 11:31:19,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-04-18 11:31:19,561 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-04-18 11:31:19,561 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 11:31:19,563 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-04-18 11:31:19,568 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-04-18 11:31:19,584 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-04-18 11:31:19,584 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 11:31:19,586 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-04-18 11:31:19,590 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-04-18 11:31:19,590 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:21,442 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-18 11:31:21,514 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-04-18 11:31:21,514 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-04-18 11:31:21,514 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-04-18 11:31:21,856 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-04-18 11:31:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-04-18 11:31:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:21,857 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:21,857 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:21,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:21,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-04-18 11:31:21,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:21,858 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1976276223] [2020-04-18 11:31:21,858 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:21,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:21,859 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:21,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:21,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 2 times [2020-04-18 11:31:21,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:21,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040791893] [2020-04-18 11:31:21,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:21,879 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 11:31:21,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040791893] [2020-04-18 11:31:21,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:21,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:21,880 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:21,881 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:21,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:21,881 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:21,884 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:21,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:21,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:21,884 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:21,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:21,885 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:21,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:21,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1976276223] [2020-04-18 11:31:21,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:21,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:21,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1976276223] [2020-04-18 11:31:21,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:21,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:21,886 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-04-18 11:31:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:21,953 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-04-18 11:31:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:21,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:21,984 INFO L225 Difference]: With dead ends: 5844 [2020-04-18 11:31:21,984 INFO L226 Difference]: Without dead ends: 5479 [2020-04-18 11:31:21,984 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-04-18 11:31:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-04-18 11:31:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-04-18 11:31:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-04-18 11:31:22,239 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-04-18 11:31:22,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:22,239 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-04-18 11:31:22,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-04-18 11:31:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:22,239 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:22,239 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:22,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:22,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-04-18 11:31:22,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:22,241 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [431379414] [2020-04-18 11:31:22,241 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:22,241 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:22,242 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:22,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1529479740, now seen corresponding path program 2 times [2020-04-18 11:31:22,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:22,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032663276] [2020-04-18 11:31:22,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:22,255 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 11:31:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032663276] [2020-04-18 11:31:22,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:22,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:22,256 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:22,256 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:22,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:31:22,257 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:22,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:22,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:22,260 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:31:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:22,264 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:22,264 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:22,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 3 times [2020-04-18 11:31:22,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:22,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820333385] [2020-04-18 11:31:22,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:22,286 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 11:31:22,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820333385] [2020-04-18 11:31:22,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:22,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:22,287 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:22,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:22,289 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:22,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:22,297 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:22,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:22,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:22,298 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:31:22,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:22,312 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:22,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:22,313 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [431379414] [2020-04-18 11:31:22,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:22,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:22,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [431379414] [2020-04-18 11:31:22,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:22,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:22,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:22,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:22,314 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-04-18 11:31:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:22,429 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-04-18 11:31:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:22,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:22,455 INFO L225 Difference]: With dead ends: 9673 [2020-04-18 11:31:22,456 INFO L226 Difference]: Without dead ends: 9666 [2020-04-18 11:31:22,456 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-04-18 11:31:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-04-18 11:31:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-04-18 11:31:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-04-18 11:31:22,740 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-04-18 11:31:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:22,740 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-04-18 11:31:22,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-04-18 11:31:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:22,741 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:22,741 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:22,741 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-04-18 11:31:22,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:22,742 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1924616668] [2020-04-18 11:31:22,742 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:22,743 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:22,743 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash -372579188, now seen corresponding path program 2 times [2020-04-18 11:31:22,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:22,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095466238] [2020-04-18 11:31:22,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:22,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095466238] [2020-04-18 11:31:22,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:22,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:22,757 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:22,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:22,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:31:22,760 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:22,762 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:22,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:22,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:22,763 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:31:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:22,766 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:22,766 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:22,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 3 times [2020-04-18 11:31:22,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:22,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656164337] [2020-04-18 11:31:22,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:22,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656164337] [2020-04-18 11:31:22,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:22,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:22,796 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:22,797 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:22,799 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:22,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:22,808 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:22,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:22,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:22,809 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:31:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:22,824 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:22,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:22,824 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1924616668] [2020-04-18 11:31:22,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:22,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:22,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1924616668] [2020-04-18 11:31:22,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:22,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:22,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:22,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:22,826 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-04-18 11:31:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:23,123 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-04-18 11:31:23,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:23,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:23,162 INFO L225 Difference]: With dead ends: 11081 [2020-04-18 11:31:23,162 INFO L226 Difference]: Without dead ends: 11068 [2020-04-18 11:31:23,163 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-04-18 11:31:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-04-18 11:31:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-04-18 11:31:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-04-18 11:31:23,521 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-04-18 11:31:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:23,522 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-04-18 11:31:23,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-04-18 11:31:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:23,525 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:23,526 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:23,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-04-18 11:31:23,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:23,527 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1993086143] [2020-04-18 11:31:23,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:23,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:31:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:31:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:23,530 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:23,530 INFO L82 PathProgramCache]: Analyzing trace with hash 975024175, now seen corresponding path program 2 times [2020-04-18 11:31:23,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:23,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511929583] [2020-04-18 11:31:23,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:23,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511929583] [2020-04-18 11:31:23,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:23,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:23,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:23,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:23,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:31:23,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:23,557 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:23,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:23,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:23,558 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:31:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:23,567 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:31:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:31:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:23,568 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:23,569 INFO L82 PathProgramCache]: Analyzing trace with hash 208643679, now seen corresponding path program 3 times [2020-04-18 11:31:23,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:23,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544758556] [2020-04-18 11:31:23,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:23,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544758556] [2020-04-18 11:31:23,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:23,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:23,601 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:23,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:23,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:31:23,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:23,614 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:23,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:23,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:23,614 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 5 states. [2020-04-18 11:31:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:23,646 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:31:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:31:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:23,647 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 4 times [2020-04-18 11:31:23,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:23,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551721447] [2020-04-18 11:31:23,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:23,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551721447] [2020-04-18 11:31:23,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513135466] [2020-04-18 11:31:23,686 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:23,763 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:23,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:23,764 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:23,767 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:23,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:23,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:23,785 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:23,786 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:23,788 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:31:23,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:23,816 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:23,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:23,817 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 9 states. [2020-04-18 11:31:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:23,909 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:31:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:31:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:23,910 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:23,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 5 times [2020-04-18 11:31:23,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:23,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770011743] [2020-04-18 11:31:23,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:23,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770011743] [2020-04-18 11:31:23,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:23,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:23,951 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:23,952 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:23,954 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:31:23,954 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:23,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:23,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:23,969 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:31:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:24,064 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:31:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:31:24,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:24,064 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1993086143] [2020-04-18 11:31:24,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:24,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:24,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1993086143] [2020-04-18 11:31:24,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:24,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:24,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:24,066 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 11 states. [2020-04-18 11:31:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:24,348 INFO L93 Difference]: Finished difference Result 19072 states and 73298 transitions. [2020-04-18 11:31:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:24,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:31:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:24,389 INFO L225 Difference]: With dead ends: 19072 [2020-04-18 11:31:24,390 INFO L226 Difference]: Without dead ends: 19045 [2020-04-18 11:31:24,390 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19045 states. [2020-04-18 11:31:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19045 to 7048. [2020-04-18 11:31:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-04-18 11:31:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-04-18 11:31:25,597 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-04-18 11:31:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:25,597 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-04-18 11:31:25,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-04-18 11:31:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:25,598 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:25,598 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:25,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:25,801 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:25,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:25,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-04-18 11:31:25,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:25,802 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [989876163] [2020-04-18 11:31:25,802 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:25,803 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:31:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:31:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:25,804 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:25,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1671417013, now seen corresponding path program 2 times [2020-04-18 11:31:25,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:25,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968884819] [2020-04-18 11:31:25,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:25,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968884819] [2020-04-18 11:31:25,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:25,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:25,816 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:25,817 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:25,819 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:31:25,819 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:25,822 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:25,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:25,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:25,823 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:31:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:25,825 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:25,826 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 3 times [2020-04-18 11:31:25,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:25,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696926657] [2020-04-18 11:31:25,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:25,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696926657] [2020-04-18 11:31:25,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:25,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:25,849 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:25,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:25,852 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:31:25,853 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:25,862 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:25,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:25,863 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:31:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:25,882 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:25,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:25,883 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [989876163] [2020-04-18 11:31:25,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:25,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:25,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [989876163] [2020-04-18 11:31:25,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:25,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:25,884 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-04-18 11:31:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:26,036 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-04-18 11:31:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:26,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:31:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:26,091 INFO L225 Difference]: With dead ends: 12234 [2020-04-18 11:31:26,091 INFO L226 Difference]: Without dead ends: 12212 [2020-04-18 11:31:26,092 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:26,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-04-18 11:31:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-04-18 11:31:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-04-18 11:31:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-04-18 11:31:26,543 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-04-18 11:31:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:26,543 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-04-18 11:31:26,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:26,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-04-18 11:31:26,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:26,544 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:26,544 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:26,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-04-18 11:31:26,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:26,545 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1967626238] [2020-04-18 11:31:26,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:26,548 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 151 transitions. [2020-04-18 11:31:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:31:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:26,549 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1888358104, now seen corresponding path program 2 times [2020-04-18 11:31:26,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:26,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775950572] [2020-04-18 11:31:26,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:26,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775950572] [2020-04-18 11:31:26,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:26,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:26,564 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:26,565 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:26,570 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 101 transitions. [2020-04-18 11:31:26,571 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:26,574 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:26,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:26,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:26,575 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:31:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:26,581 INFO L93 Difference]: Finished difference Result 89 states and 163 transitions. [2020-04-18 11:31:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 163 transitions. [2020-04-18 11:31:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:26,582 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:26,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1067019528, now seen corresponding path program 3 times [2020-04-18 11:31:26,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:26,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238360916] [2020-04-18 11:31:26,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:26,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238360916] [2020-04-18 11:31:26,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:26,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:26,605 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:26,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:26,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 69 transitions. [2020-04-18 11:31:26,611 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:26,618 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:26,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:26,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:26,619 INFO L87 Difference]: Start difference. First operand 89 states and 163 transitions. Second operand 5 states. [2020-04-18 11:31:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:26,655 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-04-18 11:31:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-04-18 11:31:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:26,655 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:26,656 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 4 times [2020-04-18 11:31:26,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:26,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462735773] [2020-04-18 11:31:26,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:26,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462735773] [2020-04-18 11:31:26,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319392646] [2020-04-18 11:31:26,707 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:26,784 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:26,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:26,785 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:26,794 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:26,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:26,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:26,810 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:26,812 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:26,816 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-04-18 11:31:26,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:26,843 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:26,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:26,844 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 9 states. [2020-04-18 11:31:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:26,931 INFO L93 Difference]: Finished difference Result 97 states and 168 transitions. [2020-04-18 11:31:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 168 transitions. [2020-04-18 11:31:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:26,931 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:26,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:26,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 5 times [2020-04-18 11:31:26,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:26,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918134048] [2020-04-18 11:31:26,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:26,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918134048] [2020-04-18 11:31:26,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:26,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:26,976 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:26,978 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:26,980 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:31:26,981 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:26,998 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:26,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:26,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:26,999 INFO L87 Difference]: Start difference. First operand 97 states and 168 transitions. Second operand 7 states. [2020-04-18 11:31:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:27,236 INFO L93 Difference]: Finished difference Result 100 states and 171 transitions. [2020-04-18 11:31:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 171 transitions. [2020-04-18 11:31:27,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:27,237 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1967626238] [2020-04-18 11:31:27,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:27,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:27,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1967626238] [2020-04-18 11:31:27,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:27,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:27,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:27,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:27,238 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 11 states. [2020-04-18 11:31:27,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:27,610 INFO L93 Difference]: Finished difference Result 21543 states and 84183 transitions. [2020-04-18 11:31:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:27,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 11:31:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:27,665 INFO L225 Difference]: With dead ends: 21543 [2020-04-18 11:31:27,665 INFO L226 Difference]: Without dead ends: 21500 [2020-04-18 11:31:27,666 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21500 states. [2020-04-18 11:31:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21500 to 8129. [2020-04-18 11:31:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-04-18 11:31:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-04-18 11:31:28,036 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-04-18 11:31:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:28,036 INFO L479 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-04-18 11:31:28,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-04-18 11:31:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:28,037 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:28,037 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:28,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:28,241 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:28,241 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-04-18 11:31:28,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:28,242 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1190870164] [2020-04-18 11:31:28,243 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:28,245 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:31:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:31:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:28,246 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash 496442822, now seen corresponding path program 2 times [2020-04-18 11:31:28,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:28,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689495773] [2020-04-18 11:31:28,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:28,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689495773] [2020-04-18 11:31:28,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:28,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:28,269 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:28,270 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:28,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 74 transitions. [2020-04-18 11:31:28,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:28,290 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:28,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:28,290 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:31:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:28,296 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2020-04-18 11:31:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-04-18 11:31:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:28,296 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:28,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:28,297 INFO L82 PathProgramCache]: Analyzing trace with hash -273739378, now seen corresponding path program 3 times [2020-04-18 11:31:28,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:28,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788570167] [2020-04-18 11:31:28,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:28,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788570167] [2020-04-18 11:31:28,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461800237] [2020-04-18 11:31:28,321 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:28,403 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:31:28,404 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:28,404 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:31:28,406 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:28,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:28,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:31:28,423 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:28,426 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:28,431 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2020-04-18 11:31:28,432 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:28,455 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:28,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:28,455 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 7 states. [2020-04-18 11:31:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:28,505 INFO L93 Difference]: Finished difference Result 76 states and 124 transitions. [2020-04-18 11:31:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 124 transitions. [2020-04-18 11:31:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:28,506 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:28,506 INFO L82 PathProgramCache]: Analyzing trace with hash -273739918, now seen corresponding path program 4 times [2020-04-18 11:31:28,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:28,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307946773] [2020-04-18 11:31:28,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:28,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307946773] [2020-04-18 11:31:28,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:28,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:28,554 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:28,556 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:28,560 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2020-04-18 11:31:28,560 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:28,570 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:28,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:28,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:31:28,576 INFO L87 Difference]: Start difference. First operand 76 states and 124 transitions. Second operand 5 states. [2020-04-18 11:31:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:28,633 INFO L93 Difference]: Finished difference Result 83 states and 128 transitions. [2020-04-18 11:31:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2020-04-18 11:31:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:28,634 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 5 times [2020-04-18 11:31:28,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:28,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623082980] [2020-04-18 11:31:28,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:28,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623082980] [2020-04-18 11:31:28,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757885517] [2020-04-18 11:31:28,691 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:28,809 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:31:28,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:28,810 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:28,812 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:28,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:28,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:28,844 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:28,847 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:28,852 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-04-18 11:31:28,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:28,916 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:31:28,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:28,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:31:28,918 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand 11 states. [2020-04-18 11:31:29,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:29,072 INFO L93 Difference]: Finished difference Result 83 states and 128 transitions. [2020-04-18 11:31:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2020-04-18 11:31:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:29,073 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:29,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 6 times [2020-04-18 11:31:29,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:29,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235688708] [2020-04-18 11:31:29,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:29,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235688708] [2020-04-18 11:31:29,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:29,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:29,150 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:29,152 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:29,157 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:31:29,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:29,173 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:29,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:29,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:31:29,174 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand 7 states. [2020-04-18 11:31:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:29,262 INFO L93 Difference]: Finished difference Result 83 states and 128 transitions. [2020-04-18 11:31:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2020-04-18 11:31:29,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:29,263 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1190870164] [2020-04-18 11:31:29,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:29,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:29,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1190870164] [2020-04-18 11:31:29,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:31:29,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:29,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:31:29,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:31:29,265 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 13 states. [2020-04-18 11:31:30,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:30,007 INFO L93 Difference]: Finished difference Result 23663 states and 90455 transitions. [2020-04-18 11:31:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:31:30,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-04-18 11:31:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:30,067 INFO L225 Difference]: With dead ends: 23663 [2020-04-18 11:31:30,067 INFO L226 Difference]: Without dead ends: 23589 [2020-04-18 11:31:30,067 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:31:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23589 states. [2020-04-18 11:31:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23589 to 8317. [2020-04-18 11:31:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-04-18 11:31:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-04-18 11:31:30,453 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-04-18 11:31:30,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:30,453 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-04-18 11:31:30,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:31:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-04-18 11:31:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:30,454 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:30,454 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:30,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:30,856 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-04-18 11:31:30,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:30,857 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [544219893] [2020-04-18 11:31:30,858 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:30,861 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 405 transitions. [2020-04-18 11:31:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-04-18 11:31:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:30,863 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:30,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1963684983, now seen corresponding path program 2 times [2020-04-18 11:31:30,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:30,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269513756] [2020-04-18 11:31:30,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:30,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269513756] [2020-04-18 11:31:30,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:30,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:30,878 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:30,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:30,888 INFO L259 McrAutomatonBuilder]: Finished intersection with 65 states and 115 transitions. [2020-04-18 11:31:30,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:30,891 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:30,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:30,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:30,892 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-04-18 11:31:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:30,901 INFO L93 Difference]: Finished difference Result 203 states and 475 transitions. [2020-04-18 11:31:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 475 transitions. [2020-04-18 11:31:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:30,901 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:30,902 INFO L82 PathProgramCache]: Analyzing trace with hash -508954823, now seen corresponding path program 3 times [2020-04-18 11:31:30,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:30,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998008033] [2020-04-18 11:31:30,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:30,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998008033] [2020-04-18 11:31:30,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:30,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:30,924 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:30,926 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:30,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 100 transitions. [2020-04-18 11:31:30,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:30,941 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:30,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:30,941 INFO L87 Difference]: Start difference. First operand 203 states and 475 transitions. Second operand 5 states. [2020-04-18 11:31:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:30,980 INFO L93 Difference]: Finished difference Result 266 states and 576 transitions. [2020-04-18 11:31:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 576 transitions. [2020-04-18 11:31:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:30,981 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1556585781, now seen corresponding path program 4 times [2020-04-18 11:31:30,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:30,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258096164] [2020-04-18 11:31:30,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:31,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258096164] [2020-04-18 11:31:31,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402129711] [2020-04-18 11:31:31,029 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:31,111 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:31,112 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:31,112 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:31,123 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:31,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:31,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:31:31,140 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:31,146 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:31,153 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 66 transitions. [2020-04-18 11:31:31,153 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:31,181 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:31,182 INFO L87 Difference]: Start difference. First operand 266 states and 576 transitions. Second operand 9 states. [2020-04-18 11:31:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:31,364 INFO L93 Difference]: Finished difference Result 308 states and 628 transitions. [2020-04-18 11:31:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 628 transitions. [2020-04-18 11:31:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:31,365 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1556586801, now seen corresponding path program 5 times [2020-04-18 11:31:31,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:31,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825198734] [2020-04-18 11:31:31,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:31,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825198734] [2020-04-18 11:31:31,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872914508] [2020-04-18 11:31:31,405 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:31,498 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:31:31,498 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:31,499 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:31,500 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:31,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:31,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:31,537 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:31,539 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:31,546 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 66 transitions. [2020-04-18 11:31:31,546 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:31,555 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:31,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:31,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:31,556 INFO L87 Difference]: Start difference. First operand 308 states and 628 transitions. Second operand 9 states. [2020-04-18 11:31:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:31,748 INFO L93 Difference]: Finished difference Result 361 states and 682 transitions. [2020-04-18 11:31:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 682 transitions. [2020-04-18 11:31:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:31,749 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 6 times [2020-04-18 11:31:31,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:31,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796250224] [2020-04-18 11:31:31,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:31,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796250224] [2020-04-18 11:31:31,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455052058] [2020-04-18 11:31:31,815 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:31,889 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:31:31,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:31,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:31,891 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:31,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:31,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:31,912 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:31,914 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:31,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-04-18 11:31:31,921 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:31,968 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:31:31,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:31:31,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:31:31,969 INFO L87 Difference]: Start difference. First operand 361 states and 682 transitions. Second operand 13 states. [2020-04-18 11:31:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:32,679 INFO L93 Difference]: Finished difference Result 368 states and 687 transitions. [2020-04-18 11:31:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 687 transitions. [2020-04-18 11:31:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:32,680 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:31:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:32,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 7 times [2020-04-18 11:31:32,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:32,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682705712] [2020-04-18 11:31:32,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:32,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682705712] [2020-04-18 11:31:32,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118371618] [2020-04-18 11:31:32,725 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:32,802 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:32,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:32,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:32,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:32,822 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:32,823 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:32,829 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:31:32,829 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:32,839 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:32,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:32,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1371, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:31:32,839 INFO L87 Difference]: Start difference. First operand 368 states and 687 transitions. Second operand 11 states. [2020-04-18 11:31:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:33,379 INFO L93 Difference]: Finished difference Result 375 states and 692 transitions. [2020-04-18 11:31:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 692 transitions. [2020-04-18 11:31:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:33,381 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:31:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:33,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1056201999, now seen corresponding path program 8 times [2020-04-18 11:31:33,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:33,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867717120] [2020-04-18 11:31:33,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:33,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867717120] [2020-04-18 11:31:33,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:33,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:31:33,431 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:33,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:33,439 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 37 transitions. [2020-04-18 11:31:33,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:33,486 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:33,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 11:31:33,487 INFO L87 Difference]: Start difference. First operand 375 states and 692 transitions. Second operand 7 states. [2020-04-18 11:31:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:33,759 INFO L93 Difference]: Finished difference Result 411 states and 727 transitions. [2020-04-18 11:31:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 727 transitions. [2020-04-18 11:31:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:33,760 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:31:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:33,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1056741489, now seen corresponding path program 9 times [2020-04-18 11:31:33,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:33,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204474634] [2020-04-18 11:31:33,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:33,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204474634] [2020-04-18 11:31:33,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869367748] [2020-04-18 11:31:33,812 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:33,895 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:31:33,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:33,896 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:33,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:33,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:33,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:33,914 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:33,916 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:33,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 37 transitions. [2020-04-18 11:31:33,921 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:33,961 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:33,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3822, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 11:31:33,963 INFO L87 Difference]: Start difference. First operand 411 states and 727 transitions. Second operand 9 states. [2020-04-18 11:31:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:34,175 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:31:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:31:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:34,177 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:31:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:34,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 10 times [2020-04-18 11:31:34,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:34,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473928594] [2020-04-18 11:31:34,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:34,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473928594] [2020-04-18 11:31:34,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208192045] [2020-04-18 11:31:34,243 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:34,329 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:34,330 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:34,331 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:34,331 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:34,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:34,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:34,368 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:34,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:34,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:31:34,376 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:34,459 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:31:34,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:31:34,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5041, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 11:31:34,460 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 17 states. [2020-04-18 11:31:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:35,354 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:31:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:31:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:35,355 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:31:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 11 times [2020-04-18 11:31:35,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:35,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555521168] [2020-04-18 11:31:35,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:35,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555521168] [2020-04-18 11:31:35,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813667174] [2020-04-18 11:31:35,403 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:35,481 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:31:35,482 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:35,483 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:35,483 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:35,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:35,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:35,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:35,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:35,504 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-04-18 11:31:35,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:35,519 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:31:35,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:31:35,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=6887, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 11:31:35,521 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 13 states. [2020-04-18 11:31:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:36,184 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:31:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:31:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:36,185 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:31:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:36,186 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 12 times [2020-04-18 11:31:36,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:36,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787184020] [2020-04-18 11:31:36,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:36,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787184020] [2020-04-18 11:31:36,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:36,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:31:36,275 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:36,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:36,284 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:31:36,284 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:36,285 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:36,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:36,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1970, Invalid=9802, Unknown=0, NotChecked=0, Total=11772 [2020-04-18 11:31:36,289 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 9 states. [2020-04-18 11:31:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:36,856 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:31:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:31:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:36,857 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:31:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:36,858 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 13 times [2020-04-18 11:31:36,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:36,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243214857] [2020-04-18 11:31:36,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:36,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243214857] [2020-04-18 11:31:36,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:36,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:31:36,931 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:36,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:36,936 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:31:36,936 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:36,937 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:36,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:36,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2330, Invalid=12190, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 11:31:36,938 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 9 states. [2020-04-18 11:31:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:37,456 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:31:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:31:37,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:37,458 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [544219893] [2020-04-18 11:31:37,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:37,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:31:37,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [544219893] [2020-04-18 11:31:37,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:31:37,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:31:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2794, Invalid=15566, Unknown=0, NotChecked=0, Total=18360 [2020-04-18 11:31:37,464 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 24 states. [2020-04-18 11:31:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:41,805 INFO L93 Difference]: Finished difference Result 44264 states and 150047 transitions. [2020-04-18 11:31:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:31:41,806 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-04-18 11:31:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:41,916 INFO L225 Difference]: With dead ends: 44264 [2020-04-18 11:31:41,917 INFO L226 Difference]: Without dead ends: 44119 [2020-04-18 11:31:41,919 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26620 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8309, Invalid=53941, Unknown=0, NotChecked=0, Total=62250 [2020-04-18 11:31:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44119 states. [2020-04-18 11:31:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44119 to 7221. [2020-04-18 11:31:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7221 states. [2020-04-18 11:31:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7221 states to 7221 states and 33268 transitions. [2020-04-18 11:31:42,432 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 33268 transitions. Word has length 21 [2020-04-18 11:31:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:42,432 INFO L479 AbstractCegarLoop]: Abstraction has 7221 states and 33268 transitions. [2020-04-18 11:31:42,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:31:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 33268 transitions. [2020-04-18 11:31:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:42,433 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:42,433 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:43,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:43,836 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-04-18 11:31:43,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:43,838 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1708414129] [2020-04-18 11:31:43,839 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,840 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-04-18 11:31:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 11:31:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:43,840 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:43,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1956013121, now seen corresponding path program 2 times [2020-04-18 11:31:43,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:43,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169206333] [2020-04-18 11:31:43,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:43,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169206333] [2020-04-18 11:31:43,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:43,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:43,855 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:43,857 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,861 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:31:43,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:43,866 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:43,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:43,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:43,867 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-04-18 11:31:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,872 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:31:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:31:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:43,872 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:43,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 3 times [2020-04-18 11:31:43,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:43,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999226649] [2020-04-18 11:31:43,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:43,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999226649] [2020-04-18 11:31:43,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:43,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:43,912 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:43,913 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,915 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:31:43,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:43,929 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:43,930 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 5 states. [2020-04-18 11:31:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,946 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:31:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:31:43,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:43,946 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1708414129] [2020-04-18 11:31:43,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:43,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:43,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1708414129] [2020-04-18 11:31:43,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:43,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:43,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:43,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:43,948 INFO L87 Difference]: Start difference. First operand 7221 states and 33268 transitions. Second operand 5 states. [2020-04-18 11:31:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:44,077 INFO L93 Difference]: Finished difference Result 12418 states and 54012 transitions. [2020-04-18 11:31:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:44,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:31:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:44,109 INFO L225 Difference]: With dead ends: 12418 [2020-04-18 11:31:44,109 INFO L226 Difference]: Without dead ends: 12387 [2020-04-18 11:31:44,110 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12387 states. [2020-04-18 11:31:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12387 to 8573. [2020-04-18 11:31:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-04-18 11:31:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-04-18 11:31:44,516 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-04-18 11:31:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:44,517 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-04-18 11:31:44,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-04-18 11:31:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:44,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:44,518 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:44,518 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-04-18 11:31:44,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:44,519 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1768542897] [2020-04-18 11:31:44,520 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,522 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 203 transitions. [2020-04-18 11:31:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-18 11:31:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:44,524 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,524 INFO L82 PathProgramCache]: Analyzing trace with hash -25109276, now seen corresponding path program 2 times [2020-04-18 11:31:44,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:44,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770711611] [2020-04-18 11:31:44,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:44,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770711611] [2020-04-18 11:31:44,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:44,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:44,554 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:44,556 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 77 states and 141 transitions. [2020-04-18 11:31:44,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:44,568 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:44,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:44,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:44,568 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-04-18 11:31:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:44,574 INFO L93 Difference]: Finished difference Result 117 states and 219 transitions. [2020-04-18 11:31:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 219 transitions. [2020-04-18 11:31:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:44,575 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2136056596, now seen corresponding path program 3 times [2020-04-18 11:31:44,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:44,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333387368] [2020-04-18 11:31:44,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:31:44,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333387368] [2020-04-18 11:31:44,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:44,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:44,599 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:44,600 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 97 transitions. [2020-04-18 11:31:44,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:44,615 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:44,615 INFO L87 Difference]: Start difference. First operand 117 states and 219 transitions. Second operand 5 states. [2020-04-18 11:31:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:44,649 INFO L93 Difference]: Finished difference Result 124 states and 224 transitions. [2020-04-18 11:31:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 224 transitions. [2020-04-18 11:31:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:44,650 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 4 times [2020-04-18 11:31:44,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:44,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128944557] [2020-04-18 11:31:44,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:31:44,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128944557] [2020-04-18 11:31:44,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138901827] [2020-04-18 11:31:44,702 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:44,778 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:44,779 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:44,779 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:44,780 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:31:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:44,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:44,793 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:44,795 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,801 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-04-18 11:31:44,801 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:44,819 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:44,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:44,820 INFO L87 Difference]: Start difference. First operand 124 states and 224 transitions. Second operand 9 states. [2020-04-18 11:31:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:44,907 INFO L93 Difference]: Finished difference Result 125 states and 224 transitions. [2020-04-18 11:31:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 224 transitions. [2020-04-18 11:31:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:44,908 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 5 times [2020-04-18 11:31:44,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:44,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804844515] [2020-04-18 11:31:44,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:44,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804844515] [2020-04-18 11:31:44,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:44,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:44,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:44,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:31:44,944 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:44,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:44,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:44,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:44,969 INFO L87 Difference]: Start difference. First operand 125 states and 224 transitions. Second operand 7 states. [2020-04-18 11:31:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:45,062 INFO L93 Difference]: Finished difference Result 128 states and 227 transitions. [2020-04-18 11:31:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 227 transitions. [2020-04-18 11:31:45,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:45,063 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1768542897] [2020-04-18 11:31:45,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:45,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:45,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1768542897] [2020-04-18 11:31:45,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:45,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:45,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:45,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:45,065 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 11 states. [2020-04-18 11:31:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:45,420 INFO L93 Difference]: Finished difference Result 22356 states and 88808 transitions. [2020-04-18 11:31:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:45,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-04-18 11:31:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:45,472 INFO L225 Difference]: With dead ends: 22356 [2020-04-18 11:31:45,473 INFO L226 Difference]: Without dead ends: 22295 [2020-04-18 11:31:45,473 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22295 states. [2020-04-18 11:31:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22295 to 8496. [2020-04-18 11:31:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8496 states. [2020-04-18 11:31:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8496 states to 8496 states and 38896 transitions. [2020-04-18 11:31:45,809 INFO L78 Accepts]: Start accepts. Automaton has 8496 states and 38896 transitions. Word has length 23 [2020-04-18 11:31:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:45,809 INFO L479 AbstractCegarLoop]: Abstraction has 8496 states and 38896 transitions. [2020-04-18 11:31:45,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8496 states and 38896 transitions. [2020-04-18 11:31:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:45,810 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:45,810 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:46,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:46,011 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:46,012 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-04-18 11:31:46,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:46,013 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1568856902] [2020-04-18 11:31:46,014 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:46,016 INFO L259 McrAutomatonBuilder]: Finished intersection with 84 states and 163 transitions. [2020-04-18 11:31:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-04-18 11:31:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:46,016 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash -905639014, now seen corresponding path program 2 times [2020-04-18 11:31:46,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:46,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475592165] [2020-04-18 11:31:46,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:46,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475592165] [2020-04-18 11:31:46,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:46,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:46,027 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:46,029 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:46,037 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 106 transitions. [2020-04-18 11:31:46,037 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:46,040 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:46,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:46,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:46,041 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-04-18 11:31:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:46,047 INFO L93 Difference]: Finished difference Result 97 states and 175 transitions. [2020-04-18 11:31:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 175 transitions. [2020-04-18 11:31:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:46,047 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:46,048 INFO L82 PathProgramCache]: Analyzing trace with hash 72985754, now seen corresponding path program 3 times [2020-04-18 11:31:46,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:46,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303739632] [2020-04-18 11:31:46,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:46,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303739632] [2020-04-18 11:31:46,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:46,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:46,070 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:46,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:46,088 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 44 transitions. [2020-04-18 11:31:46,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:46,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:46,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:46,098 INFO L87 Difference]: Start difference. First operand 97 states and 175 transitions. Second operand 5 states. [2020-04-18 11:31:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:46,125 INFO L93 Difference]: Finished difference Result 104 states and 180 transitions. [2020-04-18 11:31:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 180 transitions. [2020-04-18 11:31:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:46,125 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:46,126 INFO L82 PathProgramCache]: Analyzing trace with hash 72984734, now seen corresponding path program 4 times [2020-04-18 11:31:46,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:46,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87754958] [2020-04-18 11:31:46,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:46,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87754958] [2020-04-18 11:31:46,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463114500] [2020-04-18 11:31:46,151 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:46,234 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:46,234 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:46,235 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:31:46,235 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:46,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:46,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:31:46,245 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:46,247 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:46,253 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 44 transitions. [2020-04-18 11:31:46,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:46,283 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:46,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:46,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:31:46,283 INFO L87 Difference]: Start difference. First operand 104 states and 180 transitions. Second operand 7 states. [2020-04-18 11:31:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:46,325 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2020-04-18 11:31:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2020-04-18 11:31:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:46,326 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:46,327 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 5 times [2020-04-18 11:31:46,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:46,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173061472] [2020-04-18 11:31:46,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:46,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173061472] [2020-04-18 11:31:46,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755770422] [2020-04-18 11:31:46,367 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:46,445 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:31:46,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:46,446 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:46,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:46,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:46,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:46,460 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:46,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:46,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-04-18 11:31:46,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:46,530 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:31:46,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:31:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:31:46,531 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand 12 states. [2020-04-18 11:31:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:46,644 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2020-04-18 11:31:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2020-04-18 11:31:46,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:46,645 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 6 times [2020-04-18 11:31:46,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:46,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143805996] [2020-04-18 11:31:46,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:46,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143805996] [2020-04-18 11:31:46,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:46,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:46,677 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:46,678 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:46,681 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:31:46,681 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:46,689 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:46,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:46,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:31:46,690 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand 7 states. [2020-04-18 11:31:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:46,792 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2020-04-18 11:31:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2020-04-18 11:31:46,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:46,793 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1568856902] [2020-04-18 11:31:46,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:46,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:46,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1568856902] [2020-04-18 11:31:46,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:31:46,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:46,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:31:46,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:31:46,794 INFO L87 Difference]: Start difference. First operand 8496 states and 38896 transitions. Second operand 14 states. [2020-04-18 11:31:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,517 INFO L93 Difference]: Finished difference Result 24945 states and 96342 transitions. [2020-04-18 11:31:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:31:47,518 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-04-18 11:31:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:47,575 INFO L225 Difference]: With dead ends: 24945 [2020-04-18 11:31:47,575 INFO L226 Difference]: Without dead ends: 24844 [2020-04-18 11:31:47,576 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 11:31:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2020-04-18 11:31:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 8914. [2020-04-18 11:31:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8914 states. [2020-04-18 11:31:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8914 states to 8914 states and 40728 transitions. [2020-04-18 11:31:47,963 INFO L78 Accepts]: Start accepts. Automaton has 8914 states and 40728 transitions. Word has length 23 [2020-04-18 11:31:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:47,963 INFO L479 AbstractCegarLoop]: Abstraction has 8914 states and 40728 transitions. [2020-04-18 11:31:47,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:31:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8914 states and 40728 transitions. [2020-04-18 11:31:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:47,965 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:47,965 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:48,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:48,366 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-04-18 11:31:48,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:48,369 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1847415330] [2020-04-18 11:31:48,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,371 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 123 transitions. [2020-04-18 11:31:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 11:31:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:48,371 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1334245862, now seen corresponding path program 2 times [2020-04-18 11:31:48,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068438516] [2020-04-18 11:31:48,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:48,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068438516] [2020-04-18 11:31:48,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:48,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:48,380 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,381 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,386 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 86 transitions. [2020-04-18 11:31:48,386 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,389 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:48,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:48,389 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-04-18 11:31:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,396 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2020-04-18 11:31:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 131 transitions. [2020-04-18 11:31:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:48,397 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -328925126, now seen corresponding path program 3 times [2020-04-18 11:31:48,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350631489] [2020-04-18 11:31:48,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:48,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350631489] [2020-04-18 11:31:48,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:48,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:48,431 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,439 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 36 transitions. [2020-04-18 11:31:48,439 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,461 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:48,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:48,462 INFO L87 Difference]: Start difference. First operand 77 states and 131 transitions. Second operand 5 states. [2020-04-18 11:31:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,497 INFO L93 Difference]: Finished difference Result 84 states and 136 transitions. [2020-04-18 11:31:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 136 transitions. [2020-04-18 11:31:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:48,497 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash -328925666, now seen corresponding path program 4 times [2020-04-18 11:31:48,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478743079] [2020-04-18 11:31:48,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478743079] [2020-04-18 11:31:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019134069] [2020-04-18 11:31:48,526 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:48,604 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:48,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:48,605 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:31:48,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:48,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:48,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:31:48,616 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,618 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 36 transitions. [2020-04-18 11:31:48,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,637 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:48,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:48,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:31:48,637 INFO L87 Difference]: Start difference. First operand 84 states and 136 transitions. Second operand 7 states. [2020-04-18 11:31:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,683 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2020-04-18 11:31:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2020-04-18 11:31:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:48,684 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 5 times [2020-04-18 11:31:48,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517505667] [2020-04-18 11:31:48,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:48,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517505667] [2020-04-18 11:31:48,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350125283] [2020-04-18 11:31:48,713 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:48,790 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:31:48,791 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:48,792 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:48,793 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:48,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:48,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:48,811 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,813 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,817 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-04-18 11:31:48,817 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,850 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:31:48,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:31:48,851 INFO L87 Difference]: Start difference. First operand 91 states and 140 transitions. Second operand 11 states. [2020-04-18 11:31:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,954 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2020-04-18 11:31:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2020-04-18 11:31:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:31:48,955 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,955 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 6 times [2020-04-18 11:31:48,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870650755] [2020-04-18 11:31:48,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:49,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870650755] [2020-04-18 11:31:49,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:49,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:49,020 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:49,022 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:49,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:31:49,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:49,039 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:31:49,040 INFO L87 Difference]: Start difference. First operand 91 states and 140 transitions. Second operand 7 states. [2020-04-18 11:31:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:49,121 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2020-04-18 11:31:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2020-04-18 11:31:49,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:49,122 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1847415330] [2020-04-18 11:31:49,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:49,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:49,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1847415330] [2020-04-18 11:31:49,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:31:49,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:49,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:31:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:31:49,124 INFO L87 Difference]: Start difference. First operand 8914 states and 40728 transitions. Second operand 13 states. [2020-04-18 11:31:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:49,710 INFO L93 Difference]: Finished difference Result 25403 states and 98232 transitions. [2020-04-18 11:31:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:31:49,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-04-18 11:31:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:49,777 INFO L225 Difference]: With dead ends: 25403 [2020-04-18 11:31:49,777 INFO L226 Difference]: Without dead ends: 25289 [2020-04-18 11:31:49,778 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:31:49,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2020-04-18 11:31:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 9426. [2020-04-18 11:31:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-04-18 11:31:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-04-18 11:31:50,387 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-04-18 11:31:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:50,387 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-04-18 11:31:50,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:31:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-04-18 11:31:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:50,390 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:50,390 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:50,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:50,791 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:50,792 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-04-18 11:31:50,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:50,792 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1807038064] [2020-04-18 11:31:50,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:50,799 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 609 transitions. [2020-04-18 11:31:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-04-18 11:31:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:50,800 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:50,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:50,801 INFO L82 PathProgramCache]: Analyzing trace with hash 825478653, now seen corresponding path program 2 times [2020-04-18 11:31:50,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:50,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216499871] [2020-04-18 11:31:50,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:50,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216499871] [2020-04-18 11:31:50,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:50,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:50,810 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:50,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:50,821 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 163 transitions. [2020-04-18 11:31:50,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:50,824 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:50,825 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 3 states. [2020-04-18 11:31:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:50,837 INFO L93 Difference]: Finished difference Result 295 states and 715 transitions. [2020-04-18 11:31:50,837 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 715 transitions. [2020-04-18 11:31:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:50,837 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:50,838 INFO L82 PathProgramCache]: Analyzing trace with hash 783331315, now seen corresponding path program 3 times [2020-04-18 11:31:50,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:50,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183769717] [2020-04-18 11:31:50,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:50,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183769717] [2020-04-18 11:31:50,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:50,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:50,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:50,864 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:50,874 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 148 transitions. [2020-04-18 11:31:50,874 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:50,883 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:50,884 INFO L87 Difference]: Start difference. First operand 295 states and 715 transitions. Second operand 5 states. [2020-04-18 11:31:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:50,937 INFO L93 Difference]: Finished difference Result 386 states and 864 transitions. [2020-04-18 11:31:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 864 transitions. [2020-04-18 11:31:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:50,938 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash 145278167, now seen corresponding path program 4 times [2020-04-18 11:31:50,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:50,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936262671] [2020-04-18 11:31:50,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:50,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936262671] [2020-04-18 11:31:50,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627582820] [2020-04-18 11:31:50,974 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:51,056 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:51,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:51,057 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:51,057 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:51,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:51,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:31:51,074 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:51,075 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,084 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 94 transitions. [2020-04-18 11:31:51,084 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:51,106 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:51,107 INFO L87 Difference]: Start difference. First operand 386 states and 864 transitions. Second operand 9 states. [2020-04-18 11:31:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,319 INFO L93 Difference]: Finished difference Result 428 states and 916 transitions. [2020-04-18 11:31:51,319 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 916 transitions. [2020-04-18 11:31:51,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:51,320 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash 145277147, now seen corresponding path program 5 times [2020-04-18 11:31:51,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:51,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633590709] [2020-04-18 11:31:51,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:51,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633590709] [2020-04-18 11:31:51,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906989492] [2020-04-18 11:31:51,363 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:51,460 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:31:51,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:51,462 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:51,464 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:51,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:51,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:51,488 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:51,490 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,508 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 94 transitions. [2020-04-18 11:31:51,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:51,523 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:51,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:51,523 INFO L87 Difference]: Start difference. First operand 428 states and 916 transitions. Second operand 9 states. [2020-04-18 11:31:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,759 INFO L93 Difference]: Finished difference Result 485 states and 974 transitions. [2020-04-18 11:31:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 974 transitions. [2020-04-18 11:31:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:51,760 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash 145051157, now seen corresponding path program 6 times [2020-04-18 11:31:51,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:51,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170570386] [2020-04-18 11:31:51,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:51,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170570386] [2020-04-18 11:31:51,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401038394] [2020-04-18 11:31:51,834 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:51,967 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:31:51,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:51,969 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:51,970 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:31:52,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:52,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:52,009 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,027 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-04-18 11:31:52,027 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,156 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:31:52,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:31:52,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:31:52,157 INFO L87 Difference]: Start difference. First operand 485 states and 974 transitions. Second operand 14 states. [2020-04-18 11:31:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,739 INFO L93 Difference]: Finished difference Result 492 states and 979 transitions. [2020-04-18 11:31:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 979 transitions. [2020-04-18 11:31:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:52,740 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:31:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash -78179145, now seen corresponding path program 7 times [2020-04-18 11:31:52,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:52,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775296928] [2020-04-18 11:31:52,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:52,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775296928] [2020-04-18 11:31:52,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230666519] [2020-04-18 11:31:52,788 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,866 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:52,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:31:52,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:52,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:52,885 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,894 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:31:52,894 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,908 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:52,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:52,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 11:31:52,909 INFO L87 Difference]: Start difference. First operand 492 states and 979 transitions. Second operand 11 states. [2020-04-18 11:31:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:53,445 INFO L93 Difference]: Finished difference Result 499 states and 984 transitions. [2020-04-18 11:31:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 984 transitions. [2020-04-18 11:31:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:53,446 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:31:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1419407101, now seen corresponding path program 8 times [2020-04-18 11:31:53,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:53,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885624029] [2020-04-18 11:31:53,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:53,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885624029] [2020-04-18 11:31:53,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:53,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:31:53,496 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:53,497 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:53,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:31:53,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:53,541 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:53,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=2776, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:31:53,542 INFO L87 Difference]: Start difference. First operand 499 states and 984 transitions. Second operand 7 states. [2020-04-18 11:31:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:53,748 INFO L93 Difference]: Finished difference Result 535 states and 1019 transitions. [2020-04-18 11:31:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1019 transitions. [2020-04-18 11:31:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:53,750 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:31:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1418867611, now seen corresponding path program 9 times [2020-04-18 11:31:53,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:53,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241699130] [2020-04-18 11:31:53,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:53,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241699130] [2020-04-18 11:31:53,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682325664] [2020-04-18 11:31:53,781 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:53,858 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 11:31:53,858 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:53,859 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:53,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:53,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:53,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:53,871 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:53,873 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:53,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:31:53,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:53,908 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:53,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:53,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=3917, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 11:31:53,909 INFO L87 Difference]: Start difference. First operand 535 states and 1019 transitions. Second operand 9 states. [2020-04-18 11:31:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:54,110 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:31:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:31:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:54,111 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:31:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 10 times [2020-04-18 11:31:54,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:54,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107049799] [2020-04-18 11:31:54,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:54,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107049799] [2020-04-18 11:31:54,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810398981] [2020-04-18 11:31:54,180 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:54,280 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:54,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:54,282 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:54,283 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:54,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:54,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:54,328 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:54,331 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:54,346 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:31:54,347 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:54,572 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 11:31:54,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 11:31:54,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1251, Invalid=5391, Unknown=0, NotChecked=0, Total=6642 [2020-04-18 11:31:54,573 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 20 states. [2020-04-18 11:31:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:55,360 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:31:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:31:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:55,361 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:31:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 11 times [2020-04-18 11:31:55,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:55,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010842637] [2020-04-18 11:31:55,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:55,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010842637] [2020-04-18 11:31:55,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192896307] [2020-04-18 11:31:55,532 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:55,611 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:31:55,611 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:55,612 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:55,613 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:31:55,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:55,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:55,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:55,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:55,634 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:31:55,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:55,671 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:31:55,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:31:55,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1635, Invalid=7295, Unknown=0, NotChecked=0, Total=8930 [2020-04-18 11:31:55,671 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 14 states. [2020-04-18 11:31:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:56,391 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:31:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:31:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:56,392 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:31:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 12 times [2020-04-18 11:31:56,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:56,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580181626] [2020-04-18 11:31:56,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:56,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580181626] [2020-04-18 11:31:56,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:56,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:31:56,436 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:56,438 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:56,443 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:31:56,443 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:56,444 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:56,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:56,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2139, Invalid=10293, Unknown=0, NotChecked=0, Total=12432 [2020-04-18 11:31:56,445 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 9 states. [2020-04-18 11:31:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:56,862 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:31:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:31:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:31:56,863 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:31:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 13 times [2020-04-18 11:31:56,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:56,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668422608] [2020-04-18 11:31:56,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:31:56,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668422608] [2020-04-18 11:31:56,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:56,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:31:56,925 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:56,927 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:56,932 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:31:56,933 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:56,933 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:56,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:56,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2519, Invalid=12733, Unknown=0, NotChecked=0, Total=15252 [2020-04-18 11:31:56,934 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 9 states. [2020-04-18 11:31:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:57,426 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:31:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:31:57,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:57,428 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1807038064] [2020-04-18 11:31:57,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:57,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:31:57,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1807038064] [2020-04-18 11:31:57,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 11:31:57,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:57,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 11:31:57,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3000, Invalid=16182, Unknown=0, NotChecked=0, Total=19182 [2020-04-18 11:31:57,430 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 27 states. [2020-04-18 11:32:01,962 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-04-18 11:32:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:02,401 INFO L93 Difference]: Finished difference Result 48582 states and 167110 transitions. [2020-04-18 11:32:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:32:02,401 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-04-18 11:32:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:02,541 INFO L225 Difference]: With dead ends: 48582 [2020-04-18 11:32:02,541 INFO L226 Difference]: Without dead ends: 48341 [2020-04-18 11:32:02,543 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 556 SyntacticMatches, 5 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27287 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=8784, Invalid=54972, Unknown=0, NotChecked=0, Total=63756 [2020-04-18 11:32:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48341 states. [2020-04-18 11:32:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48341 to 8476. [2020-04-18 11:32:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8476 states. [2020-04-18 11:32:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 38671 transitions. [2020-04-18 11:32:03,258 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 38671 transitions. Word has length 25 [2020-04-18 11:32:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:03,258 INFO L479 AbstractCegarLoop]: Abstraction has 8476 states and 38671 transitions. [2020-04-18 11:32:03,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 11:32:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 38671 transitions. [2020-04-18 11:32:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:03,260 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:03,261 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:04,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:04,665 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-04-18 11:32:04,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:04,666 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1922806795] [2020-04-18 11:32:04,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,672 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 457 transitions. [2020-04-18 11:32:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-04-18 11:32:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:04,673 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1772610045, now seen corresponding path program 2 times [2020-04-18 11:32:04,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:04,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722623464] [2020-04-18 11:32:04,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:04,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722623464] [2020-04-18 11:32:04,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:04,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:04,684 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:04,685 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,695 INFO L259 McrAutomatonBuilder]: Finished intersection with 85 states and 155 transitions. [2020-04-18 11:32:04,695 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:04,698 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:04,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:04,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:04,698 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-04-18 11:32:04,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:04,708 INFO L93 Difference]: Finished difference Result 231 states and 531 transitions. [2020-04-18 11:32:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 531 transitions. [2020-04-18 11:32:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:04,709 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,710 INFO L82 PathProgramCache]: Analyzing trace with hash -111158227, now seen corresponding path program 3 times [2020-04-18 11:32:04,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:04,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636708192] [2020-04-18 11:32:04,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:04,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636708192] [2020-04-18 11:32:04,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:04,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:04,726 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:04,728 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,736 INFO L259 McrAutomatonBuilder]: Finished intersection with 75 states and 128 transitions. [2020-04-18 11:32:04,736 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:04,743 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:04,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:04,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:04,744 INFO L87 Difference]: Start difference. First operand 231 states and 531 transitions. Second operand 5 states. [2020-04-18 11:32:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:04,799 INFO L93 Difference]: Finished difference Result 294 states and 632 transitions. [2020-04-18 11:32:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 632 transitions. [2020-04-18 11:32:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:04,800 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash -558420233, now seen corresponding path program 4 times [2020-04-18 11:32:04,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:04,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017870790] [2020-04-18 11:32:04,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:04,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017870790] [2020-04-18 11:32:04,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670189261] [2020-04-18 11:32:04,849 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:04,927 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:04,927 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:04,928 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:04,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:04,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:04,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:32:04,943 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:04,944 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,953 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 86 transitions. [2020-04-18 11:32:04,953 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:04,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:04,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:04,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:04,973 INFO L87 Difference]: Start difference. First operand 294 states and 632 transitions. Second operand 9 states. [2020-04-18 11:32:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:05,182 INFO L93 Difference]: Finished difference Result 336 states and 684 transitions. [2020-04-18 11:32:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 684 transitions. [2020-04-18 11:32:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:05,183 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash -558420773, now seen corresponding path program 5 times [2020-04-18 11:32:05,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:05,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677049269] [2020-04-18 11:32:05,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:05,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677049269] [2020-04-18 11:32:05,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399863138] [2020-04-18 11:32:05,230 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:05,313 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:05,313 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:05,314 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:05,315 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:05,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:05,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:05,326 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:05,328 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:05,336 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 86 transitions. [2020-04-18 11:32:05,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:05,343 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:05,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:05,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:05,344 INFO L87 Difference]: Start difference. First operand 336 states and 684 transitions. Second operand 9 states. [2020-04-18 11:32:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:05,555 INFO L93 Difference]: Finished difference Result 389 states and 738 transitions. [2020-04-18 11:32:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 738 transitions. [2020-04-18 11:32:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:05,556 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:05,557 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 6 times [2020-04-18 11:32:05,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:05,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541356795] [2020-04-18 11:32:05,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:05,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541356795] [2020-04-18 11:32:05,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172777255] [2020-04-18 11:32:05,597 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:05,673 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:32:05,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:05,674 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:05,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:05,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:05,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:05,693 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:05,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:05,704 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:32:05,704 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:05,744 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:32:05,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:05,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:32:05,745 INFO L87 Difference]: Start difference. First operand 389 states and 738 transitions. Second operand 13 states. [2020-04-18 11:32:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:06,267 INFO L93 Difference]: Finished difference Result 396 states and 743 transitions. [2020-04-18 11:32:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 743 transitions. [2020-04-18 11:32:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:06,268 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:32:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:06,268 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 7 times [2020-04-18 11:32:06,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:06,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171845800] [2020-04-18 11:32:06,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:06,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171845800] [2020-04-18 11:32:06,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918672368] [2020-04-18 11:32:06,325 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:06,401 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:06,401 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:06,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:06,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:06,427 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:06,429 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:06,438 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:32:06,438 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:06,449 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:06,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:06,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1371, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:32:06,450 INFO L87 Difference]: Start difference. First operand 396 states and 743 transitions. Second operand 11 states. [2020-04-18 11:32:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:06,902 INFO L93 Difference]: Finished difference Result 403 states and 748 transitions. [2020-04-18 11:32:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 748 transitions. [2020-04-18 11:32:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:06,904 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:32:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:06,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1730092701, now seen corresponding path program 8 times [2020-04-18 11:32:06,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:06,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144160943] [2020-04-18 11:32:06,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:06,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144160943] [2020-04-18 11:32:06,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:06,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:32:06,937 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:06,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:06,944 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:32:06,944 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:06,966 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:06,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 11:32:06,967 INFO L87 Difference]: Start difference. First operand 403 states and 748 transitions. Second operand 7 states. [2020-04-18 11:32:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,162 INFO L93 Difference]: Finished difference Result 439 states and 783 transitions. [2020-04-18 11:32:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 783 transitions. [2020-04-18 11:32:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:07,163 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:32:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1730029851, now seen corresponding path program 9 times [2020-04-18 11:32:07,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824211922] [2020-04-18 11:32:07,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,313 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-04-18 11:32:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:07,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824211922] [2020-04-18 11:32:07,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404194741] [2020-04-18 11:32:07,328 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:07,400 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:32:07,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:07,401 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:07,401 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:07,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:07,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:07,425 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,427 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:32:07,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:07,467 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:07,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:07,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3822, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 11:32:07,468 INFO L87 Difference]: Start difference. First operand 439 states and 783 transitions. Second operand 9 states. [2020-04-18 11:32:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,665 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:07,666 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:32:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 10 times [2020-04-18 11:32:07,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207888021] [2020-04-18 11:32:07,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:07,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207888021] [2020-04-18 11:32:07,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396196154] [2020-04-18 11:32:07,712 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:07,790 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:07,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:07,791 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:07,792 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:07,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:07,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:07,805 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,812 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:32:07,813 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:07,882 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:32:07,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:32:07,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5041, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 11:32:07,884 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 17 states. [2020-04-18 11:32:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:08,573 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:08,575 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:32:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 11 times [2020-04-18 11:32:08,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:08,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169486364] [2020-04-18 11:32:08,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:08,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169486364] [2020-04-18 11:32:08,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747699523] [2020-04-18 11:32:08,641 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:08,718 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:08,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:08,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:08,720 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:08,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:08,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:08,737 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:08,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:08,745 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:32:08,745 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:08,767 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:32:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:08,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=6887, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 11:32:08,768 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 13 states. [2020-04-18 11:32:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:09,395 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:09,397 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:32:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 12 times [2020-04-18 11:32:09,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:09,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419308730] [2020-04-18 11:32:09,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:09,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419308730] [2020-04-18 11:32:09,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:09,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:09,440 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:09,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:09,445 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:09,445 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:09,446 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:09,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:09,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1970, Invalid=9802, Unknown=0, NotChecked=0, Total=11772 [2020-04-18 11:32:09,447 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 9 states. [2020-04-18 11:32:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:09,837 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:09,838 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:32:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:09,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 13 times [2020-04-18 11:32:09,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:09,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959689264] [2020-04-18 11:32:09,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:09,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959689264] [2020-04-18 11:32:09,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:09,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:09,885 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:09,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:09,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:09,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:09,892 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:09,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2330, Invalid=12190, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 11:32:09,894 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 9 states. [2020-04-18 11:32:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:10,563 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:10,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:10,566 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1922806795] [2020-04-18 11:32:10,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:10,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:32:10,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1922806795] [2020-04-18 11:32:10,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:32:10,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:10,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:32:10,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2794, Invalid=15566, Unknown=0, NotChecked=0, Total=18360 [2020-04-18 11:32:10,571 INFO L87 Difference]: Start difference. First operand 8476 states and 38671 transitions. Second operand 24 states. [2020-04-18 11:32:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:15,140 INFO L93 Difference]: Finished difference Result 46283 states and 159277 transitions. [2020-04-18 11:32:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:32:15,140 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-04-18 11:32:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:15,263 INFO L225 Difference]: With dead ends: 46283 [2020-04-18 11:32:15,263 INFO L226 Difference]: Without dead ends: 46035 [2020-04-18 11:32:15,265 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26371 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8309, Invalid=53941, Unknown=0, NotChecked=0, Total=62250 [2020-04-18 11:32:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46035 states. [2020-04-18 11:32:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46035 to 7590. [2020-04-18 11:32:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7590 states. [2020-04-18 11:32:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 34684 transitions. [2020-04-18 11:32:15,834 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 34684 transitions. Word has length 25 [2020-04-18 11:32:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:15,834 INFO L479 AbstractCegarLoop]: Abstraction has 7590 states and 34684 transitions. [2020-04-18 11:32:15,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:32:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 34684 transitions. [2020-04-18 11:32:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:15,837 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:15,837 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:17,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:17,243 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-04-18 11:32:17,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:17,244 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1347494816] [2020-04-18 11:32:17,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,249 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 417 transitions. [2020-04-18 11:32:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-04-18 11:32:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:17,250 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1380847073, now seen corresponding path program 2 times [2020-04-18 11:32:17,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:17,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128052523] [2020-04-18 11:32:17,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:17,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128052523] [2020-04-18 11:32:17,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:17,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:17,260 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:17,261 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,271 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 182 transitions. [2020-04-18 11:32:17,271 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:17,273 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:17,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:17,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:17,274 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-04-18 11:32:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:17,284 INFO L93 Difference]: Finished difference Result 211 states and 487 transitions. [2020-04-18 11:32:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 487 transitions. [2020-04-18 11:32:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:17,285 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,286 INFO L82 PathProgramCache]: Analyzing trace with hash 181846743, now seen corresponding path program 3 times [2020-04-18 11:32:17,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:17,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277059719] [2020-04-18 11:32:17,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:17,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277059719] [2020-04-18 11:32:17,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:17,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:17,316 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:17,318 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,328 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:32:17,329 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:17,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:17,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:17,338 INFO L87 Difference]: Start difference. First operand 211 states and 487 transitions. Second operand 5 states. [2020-04-18 11:32:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:17,390 INFO L93 Difference]: Finished difference Result 246 states and 540 transitions. [2020-04-18 11:32:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 540 transitions. [2020-04-18 11:32:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:17,391 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,392 INFO L82 PathProgramCache]: Analyzing trace with hash 181830003, now seen corresponding path program 4 times [2020-04-18 11:32:17,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:17,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102822734] [2020-04-18 11:32:17,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:17,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102822734] [2020-04-18 11:32:17,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270908709] [2020-04-18 11:32:17,412 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:17,491 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:17,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:17,491 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:17,492 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:17,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:17,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:32:17,505 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:17,506 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,514 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:32:17,514 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:17,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:32:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:32:17,536 INFO L87 Difference]: Start difference. First operand 246 states and 540 transitions. Second operand 7 states. [2020-04-18 11:32:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:17,616 INFO L93 Difference]: Finished difference Result 331 states and 661 transitions. [2020-04-18 11:32:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 661 transitions. [2020-04-18 11:32:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:17,617 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,617 INFO L82 PathProgramCache]: Analyzing trace with hash 181828983, now seen corresponding path program 5 times [2020-04-18 11:32:17,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:17,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987331284] [2020-04-18 11:32:17,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:17,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987331284] [2020-04-18 11:32:17,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874693398] [2020-04-18 11:32:17,637 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:17,713 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:17,713 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:17,714 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:17,714 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:17,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:17,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:32:17,724 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:17,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,733 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:32:17,733 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:17,747 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:17,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:32:17,747 INFO L87 Difference]: Start difference. First operand 331 states and 661 transitions. Second operand 7 states. [2020-04-18 11:32:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:17,825 INFO L93 Difference]: Finished difference Result 442 states and 794 transitions. [2020-04-18 11:32:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 794 transitions. [2020-04-18 11:32:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:17,826 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash 189585273, now seen corresponding path program 6 times [2020-04-18 11:32:17,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:17,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909129759] [2020-04-18 11:32:17,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:17,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909129759] [2020-04-18 11:32:17,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339870767] [2020-04-18 11:32:17,857 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:17,934 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:32:17,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:17,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:17,936 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:17,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:17,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:32:17,948 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:17,949 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 93 transitions. [2020-04-18 11:32:17,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:17,993 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:17,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:17,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:32:17,994 INFO L87 Difference]: Start difference. First operand 442 states and 794 transitions. Second operand 11 states. [2020-04-18 11:32:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:18,279 INFO L93 Difference]: Finished difference Result 457 states and 806 transitions. [2020-04-18 11:32:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 806 transitions. [2020-04-18 11:32:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:18,280 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:32:18,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:18,281 INFO L82 PathProgramCache]: Analyzing trace with hash 189358263, now seen corresponding path program 7 times [2020-04-18 11:32:18,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:18,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463180861] [2020-04-18 11:32:18,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:18,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463180861] [2020-04-18 11:32:18,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844978162] [2020-04-18 11:32:18,315 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:18,394 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:18,395 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:18,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:18,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:18,410 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:18,412 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:18,423 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 93 transitions. [2020-04-18 11:32:18,423 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:18,425 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:32:18,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:18,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-04-18 11:32:18,426 INFO L87 Difference]: Start difference. First operand 457 states and 806 transitions. Second operand 11 states. [2020-04-18 11:32:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:18,767 INFO L93 Difference]: Finished difference Result 468 states and 813 transitions. [2020-04-18 11:32:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 813 transitions. [2020-04-18 11:32:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:18,769 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:32:18,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:18,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1419610833, now seen corresponding path program 8 times [2020-04-18 11:32:18,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:18,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446676059] [2020-04-18 11:32:18,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:18,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446676059] [2020-04-18 11:32:18,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:18,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:32:18,816 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:18,819 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:18,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:32:18,829 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:18,849 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:18,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:18,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:32:18,850 INFO L87 Difference]: Start difference. First operand 468 states and 813 transitions. Second operand 7 states. [2020-04-18 11:32:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:19,102 INFO L93 Difference]: Finished difference Result 483 states and 825 transitions. [2020-04-18 11:32:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 825 transitions. [2020-04-18 11:32:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:19,103 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:32:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:19,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1418874183, now seen corresponding path program 9 times [2020-04-18 11:32:19,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:19,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734289061] [2020-04-18 11:32:19,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:19,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734289061] [2020-04-18 11:32:19,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647390800] [2020-04-18 11:32:19,148 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:19,233 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 11:32:19,233 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:19,234 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:19,236 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:19,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:19,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:19,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:19,255 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:19,263 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:32:19,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:19,265 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:19,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:19,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 11:32:19,266 INFO L87 Difference]: Start difference. First operand 483 states and 825 transitions. Second operand 9 states. [2020-04-18 11:32:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:19,467 INFO L93 Difference]: Finished difference Result 494 states and 831 transitions. [2020-04-18 11:32:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 831 transitions. [2020-04-18 11:32:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:19,468 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:32:19,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:19,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 10 times [2020-04-18 11:32:19,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:19,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404817437] [2020-04-18 11:32:19,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:19,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404817437] [2020-04-18 11:32:19,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085113101] [2020-04-18 11:32:19,518 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:19,596 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:19,597 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:19,597 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:19,598 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:19,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:19,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:19,633 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:19,635 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:19,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:32:19,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:19,698 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:32:19,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=1494, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 11:32:19,699 INFO L87 Difference]: Start difference. First operand 494 states and 831 transitions. Second operand 14 states. [2020-04-18 11:32:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:20,293 INFO L93 Difference]: Finished difference Result 494 states and 831 transitions. [2020-04-18 11:32:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 831 transitions. [2020-04-18 11:32:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:20,294 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:32:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 11 times [2020-04-18 11:32:20,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:20,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082645889] [2020-04-18 11:32:20,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:20,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082645889] [2020-04-18 11:32:20,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676724099] [2020-04-18 11:32:20,338 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:20,556 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:20,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:20,557 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:20,558 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:20,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:20,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:20,572 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:20,573 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:20,580 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:32:20,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:20,683 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:32:20,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 11:32:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=3115, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 11:32:20,684 INFO L87 Difference]: Start difference. First operand 494 states and 831 transitions. Second operand 18 states. [2020-04-18 11:32:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:21,434 INFO L93 Difference]: Finished difference Result 494 states and 831 transitions. [2020-04-18 11:32:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 831 transitions. [2020-04-18 11:32:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:21,435 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:32:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:21,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1729639995, now seen corresponding path program 12 times [2020-04-18 11:32:21,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:21,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093369184] [2020-04-18 11:32:21,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:21,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093369184] [2020-04-18 11:32:21,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:21,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:21,497 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:21,499 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:21,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:32:21,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:21,532 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:21,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:21,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=4859, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 11:32:21,534 INFO L87 Difference]: Start difference. First operand 494 states and 831 transitions. Second operand 7 states. [2020-04-18 11:32:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:21,716 INFO L93 Difference]: Finished difference Result 509 states and 842 transitions. [2020-04-18 11:32:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 842 transitions. [2020-04-18 11:32:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:21,717 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:32:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1730014785, now seen corresponding path program 13 times [2020-04-18 11:32:21,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:21,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503832316] [2020-04-18 11:32:21,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:21,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503832316] [2020-04-18 11:32:21,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461754367] [2020-04-18 11:32:21,745 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:21,818 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:21,818 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:21,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:21,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:21,830 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:21,831 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:21,838 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:32:21,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:21,839 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:21,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:21,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=5712, Unknown=0, NotChecked=0, Total=6972 [2020-04-18 11:32:21,840 INFO L87 Difference]: Start difference. First operand 509 states and 842 transitions. Second operand 9 states. [2020-04-18 11:32:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:22,044 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:32:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:32:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:22,045 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:32:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 14 times [2020-04-18 11:32:22,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:22,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435046462] [2020-04-18 11:32:22,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:22,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435046462] [2020-04-18 11:32:22,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879528268] [2020-04-18 11:32:22,092 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:22,168 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:32:22,169 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:22,169 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:22,171 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:22,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:22,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:22,193 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:22,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:22,203 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:32:22,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:22,246 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:32:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:32:22,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1422, Invalid=6588, Unknown=0, NotChecked=0, Total=8010 [2020-04-18 11:32:22,247 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 17 states. [2020-04-18 11:32:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:22,953 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:32:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:32:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:22,954 INFO L105 Mcr]: ---- MCR iteration 13 ---- [2020-04-18 11:32:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:22,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 15 times [2020-04-18 11:32:22,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:22,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840414274] [2020-04-18 11:32:22,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:23,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840414274] [2020-04-18 11:32:23,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003935734] [2020-04-18 11:32:23,007 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:23,084 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:32:23,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:23,085 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:23,086 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:23,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:23,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:23,106 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:23,108 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:23,113 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:32:23,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:23,133 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:32:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1817, Invalid=8689, Unknown=0, NotChecked=0, Total=10506 [2020-04-18 11:32:23,134 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 13 states. [2020-04-18 11:32:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:23,741 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:32:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:32:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:23,742 INFO L105 Mcr]: ---- MCR iteration 14 ---- [2020-04-18 11:32:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 16 times [2020-04-18 11:32:23,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:23,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38451259] [2020-04-18 11:32:23,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:23,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38451259] [2020-04-18 11:32:23,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:23,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:23,786 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:23,787 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:23,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:23,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:23,791 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2233, Invalid=11339, Unknown=0, NotChecked=0, Total=13572 [2020-04-18 11:32:23,793 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 9 states. [2020-04-18 11:32:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:24,222 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:32:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:32:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:24,223 INFO L105 Mcr]: ---- MCR iteration 15 ---- [2020-04-18 11:32:24,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:24,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 17 times [2020-04-18 11:32:24,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:24,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206394369] [2020-04-18 11:32:24,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:24,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206394369] [2020-04-18 11:32:24,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:24,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:24,266 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:24,268 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:24,272 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:24,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:24,272 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:24,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:24,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2608, Invalid=13904, Unknown=0, NotChecked=0, Total=16512 [2020-04-18 11:32:24,274 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 9 states. [2020-04-18 11:32:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:24,723 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:32:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:32:24,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:24,725 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1347494816] [2020-04-18 11:32:24,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:24,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:32:24,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1347494816] [2020-04-18 11:32:24,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 11:32:24,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:24,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 11:32:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=16735, Unknown=0, NotChecked=0, Total=19740 [2020-04-18 11:32:24,728 INFO L87 Difference]: Start difference. First operand 7590 states and 34684 transitions. Second operand 27 states. [2020-04-18 11:32:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:30,576 INFO L93 Difference]: Finished difference Result 45221 states and 154374 transitions. [2020-04-18 11:32:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2020-04-18 11:32:30,576 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-04-18 11:32:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:30,701 INFO L225 Difference]: With dead ends: 45221 [2020-04-18 11:32:30,701 INFO L226 Difference]: Without dead ends: 44954 [2020-04-18 11:32:30,706 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 775 SyntacticMatches, 2 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33574 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10400, Invalid=68842, Unknown=0, NotChecked=0, Total=79242 [2020-04-18 11:32:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44954 states. [2020-04-18 11:32:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44954 to 7269. [2020-04-18 11:32:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-04-18 11:32:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-04-18 11:32:31,260 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-04-18 11:32:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:31,261 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-04-18 11:32:31,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 11:32:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-04-18 11:32:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:31,263 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:31,263 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:33,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:33,272 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-04-18 11:32:33,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:33,273 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1914519939] [2020-04-18 11:32:33,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,276 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 69 transitions. [2020-04-18 11:32:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-04-18 11:32:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:33,276 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1874285922, now seen corresponding path program 2 times [2020-04-18 11:32:33,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:33,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528668053] [2020-04-18 11:32:33,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:32:33,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528668053] [2020-04-18 11:32:33,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:33,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:33,287 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:33,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,293 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 67 transitions. [2020-04-18 11:32:33,294 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:33,296 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:33,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:33,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:33,297 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-04-18 11:32:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:33,299 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:32:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:32:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:33,300 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 3 times [2020-04-18 11:32:33,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:33,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052126606] [2020-04-18 11:32:33,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:32:33,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052126606] [2020-04-18 11:32:33,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:33,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:33,322 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:33,324 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,328 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:33,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:33,356 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:33,357 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand 5 states. [2020-04-18 11:32:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:33,370 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:32:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:32:33,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:33,371 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1914519939] [2020-04-18 11:32:33,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:33,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:33,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1914519939] [2020-04-18 11:32:33,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:33,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:33,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:33,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:33,372 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-04-18 11:32:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:33,548 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-04-18 11:32:33,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:33,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-18 11:32:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:33,602 INFO L225 Difference]: With dead ends: 11919 [2020-04-18 11:32:33,602 INFO L226 Difference]: Without dead ends: 11887 [2020-04-18 11:32:33,602 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-04-18 11:32:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-04-18 11:32:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-04-18 11:32:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-04-18 11:32:34,109 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-04-18 11:32:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:34,109 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-04-18 11:32:34,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-04-18 11:32:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:32:34,116 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:34,116 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:34,116 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:34,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:34,117 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-04-18 11:32:34,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:34,117 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [125135123] [2020-04-18 11:32:34,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:34,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2020-04-18 11:32:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-04-18 11:32:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:32:34,121 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:34,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:34,122 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 2 times [2020-04-18 11:32:34,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:34,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484740636] [2020-04-18 11:32:34,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:32:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:32:34,177 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:32:34,177 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:32:34,177 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:32:34,179 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:32:34,179 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 11:32:34,199 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,199 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,200 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,201 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,202 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,203 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,203 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,208 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,209 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,209 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,209 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,210 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,211 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,212 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,213 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,214 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,215 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,216 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,217 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,218 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,219 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,220 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,221 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,231 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,231 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,231 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,231 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,231 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,233 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,233 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,234 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,234 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,234 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,236 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,237 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,237 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,237 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,237 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,239 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,240 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,242 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,243 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,243 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,243 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,243 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,245 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,245 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,246 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,246 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,246 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,248 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,249 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,249 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,249 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,251 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,251 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,252 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,252 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,252 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,252 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,253 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,253 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,254 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,254 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,254 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,255 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,255 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,255 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,260 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,261 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,261 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:34,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-18 11:32:34,262 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:32:34,262 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:32:34,262 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:32:34,263 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:32:34,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:32:34,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:32:34,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:32:34,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:32:34,265 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-04-18 11:32:34,265 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-04-18 11:32:34,285 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-04-18 11:32:34,285 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 11:32:34,287 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-04-18 11:32:34,293 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-04-18 11:32:34,313 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-04-18 11:32:34,313 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 11:32:34,315 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-04-18 11:32:34,322 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-04-18 11:32:34,322 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:32:35,866 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2020-04-18 11:32:36,433 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-18 11:32:36,755 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-04-18 11:32:36,755 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-04-18 11:32:36,755 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-04-18 11:32:38,196 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-04-18 11:32:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-04-18 11:32:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:32:38,196 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:38,196 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:32:38,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-04-18 11:32:38,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:38,197 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [812714655] [2020-04-18 11:32:38,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:38,197 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:32:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:32:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:32:38,198 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 2 times [2020-04-18 11:32:38,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:38,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988125811] [2020-04-18 11:32:38,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:38,204 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 11:32:38,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988125811] [2020-04-18 11:32:38,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:38,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:32:38,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:38,205 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:38,205 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:32:38,205 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:38,207 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:38,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:38,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:38,208 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:32:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:38,208 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:32:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:32:38,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:38,208 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [812714655] [2020-04-18 11:32:38,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:38,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:32:38,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [812714655] [2020-04-18 11:32:38,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:32:38,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:38,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:38,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:38,209 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-04-18 11:32:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:38,339 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-04-18 11:32:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:32:38,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:32:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:38,388 INFO L225 Difference]: With dead ends: 17885 [2020-04-18 11:32:38,389 INFO L226 Difference]: Without dead ends: 16791 [2020-04-18 11:32:38,389 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-04-18 11:32:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-04-18 11:32:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-04-18 11:32:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-04-18 11:32:39,163 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-04-18 11:32:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:39,163 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-04-18 11:32:39,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:32:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-04-18 11:32:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:32:39,163 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:39,163 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:39,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:39,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-04-18 11:32:39,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:39,164 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1178713069] [2020-04-18 11:32:39,164 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:39,165 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:32:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:32:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:32:39,165 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash -838148292, now seen corresponding path program 2 times [2020-04-18 11:32:39,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:39,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782529793] [2020-04-18 11:32:39,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:39,174 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 11:32:39,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782529793] [2020-04-18 11:32:39,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:39,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:39,174 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:39,175 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:39,175 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:32:39,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:39,177 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:39,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:39,178 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:32:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:39,180 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:32:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:32:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:32:39,180 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 3 times [2020-04-18 11:32:39,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:39,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516560473] [2020-04-18 11:32:39,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:39,214 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 11:32:39,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516560473] [2020-04-18 11:32:39,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:39,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:39,214 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:39,215 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:39,215 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:32:39,216 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:39,224 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:39,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:39,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:39,225 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:32:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:39,240 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:32:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:32:39,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:39,241 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1178713069] [2020-04-18 11:32:39,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:39,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:39,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1178713069] [2020-04-18 11:32:39,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:39,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:39,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:39,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:39,242 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-04-18 11:32:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:39,469 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-04-18 11:32:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:39,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:32:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:39,567 INFO L225 Difference]: With dead ends: 30985 [2020-04-18 11:32:39,567 INFO L226 Difference]: Without dead ends: 30977 [2020-04-18 11:32:39,567 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-04-18 11:32:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-04-18 11:32:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-04-18 11:32:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-04-18 11:32:42,252 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-04-18 11:32:42,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:42,252 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-04-18 11:32:42,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-04-18 11:32:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:32:42,253 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:42,253 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:42,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-04-18 11:32:42,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:42,254 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [200765884] [2020-04-18 11:32:42,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:42,254 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:32:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:32:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:32:42,255 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:42,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1465956375, now seen corresponding path program 2 times [2020-04-18 11:32:42,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:42,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657348395] [2020-04-18 11:32:42,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:42,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657348395] [2020-04-18 11:32:42,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:42,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:42,262 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:42,263 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:42,264 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:32:42,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:42,266 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:42,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:42,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:42,266 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:32:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:42,268 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:32:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:32:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:32:42,268 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 3 times [2020-04-18 11:32:42,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:42,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331233729] [2020-04-18 11:32:42,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:42,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331233729] [2020-04-18 11:32:42,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:42,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:42,293 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:42,294 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:42,295 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:32:42,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:42,303 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:42,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:42,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:42,303 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:32:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:42,319 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:32:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:32:42,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:42,320 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [200765884] [2020-04-18 11:32:42,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:42,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:42,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [200765884] [2020-04-18 11:32:42,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:42,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:42,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:42,321 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-04-18 11:32:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:42,569 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-04-18 11:32:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:42,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:32:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:42,678 INFO L225 Difference]: With dead ends: 36296 [2020-04-18 11:32:42,678 INFO L226 Difference]: Without dead ends: 36280 [2020-04-18 11:32:42,679 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-04-18 11:32:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-04-18 11:32:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-04-18 11:32:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-04-18 11:32:43,904 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-04-18 11:32:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:43,904 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-04-18 11:32:43,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-04-18 11:32:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:43,905 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:43,905 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:43,905 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:43,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-04-18 11:32:43,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:43,906 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1446828700] [2020-04-18 11:32:43,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:43,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:32:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:32:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:43,908 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 835890241, now seen corresponding path program 2 times [2020-04-18 11:32:43,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:43,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740958740] [2020-04-18 11:32:43,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:43,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740958740] [2020-04-18 11:32:43,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:43,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:43,917 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:43,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:43,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:32:43,919 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:43,922 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:43,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:43,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:43,922 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:32:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:43,928 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:32:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:32:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:43,929 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2123648201, now seen corresponding path program 3 times [2020-04-18 11:32:43,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:43,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726747031] [2020-04-18 11:32:43,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:43,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726747031] [2020-04-18 11:32:43,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205934301] [2020-04-18 11:32:43,953 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:44,042 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:32:44,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:44,043 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:44,044 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:44,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:44,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:32:44,057 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:44,058 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:44,060 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:32:44,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:44,114 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:44,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:44,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:44,114 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 11 states. [2020-04-18 11:32:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:44,195 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:32:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:32:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:44,196 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:44,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 4 times [2020-04-18 11:32:44,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:44,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356823817] [2020-04-18 11:32:44,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:44,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356823817] [2020-04-18 11:32:44,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212855684] [2020-04-18 11:32:44,230 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:44,318 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:44,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:44,319 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:44,319 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:44,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:44,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:44,775 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:44,775 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:44,777 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:32:44,777 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:44,789 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:44,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:44,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:32:44,790 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 11 states. [2020-04-18 11:32:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:44,893 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:32:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:32:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:44,893 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:44,894 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 5 times [2020-04-18 11:32:44,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:44,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114108286] [2020-04-18 11:32:44,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:44,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114108286] [2020-04-18 11:32:44,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:44,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:44,924 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:44,924 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:44,926 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:32:44,926 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:44,940 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:44,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:32:44,941 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:32:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:45,038 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:32:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:32:45,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:45,039 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1446828700] [2020-04-18 11:32:45,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:45,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:45,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1446828700] [2020-04-18 11:32:45,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:32:45,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:45,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:32:45,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:32:45,040 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 15 states. [2020-04-18 11:32:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:46,123 INFO L93 Difference]: Finished difference Result 65163 states and 295360 transitions. [2020-04-18 11:32:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:32:46,123 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-04-18 11:32:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:46,304 INFO L225 Difference]: With dead ends: 65163 [2020-04-18 11:32:46,305 INFO L226 Difference]: Without dead ends: 65130 [2020-04-18 11:32:46,305 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=579, Invalid=1871, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 11:32:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65130 states. [2020-04-18 11:32:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65130 to 23109. [2020-04-18 11:32:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-04-18 11:32:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-04-18 11:32:47,838 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-04-18 11:32:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:47,838 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-04-18 11:32:47,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:32:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-04-18 11:32:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:32:47,839 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:47,839 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:48,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:48,240 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:48,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-04-18 11:32:48,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:48,241 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [921639610] [2020-04-18 11:32:48,242 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:48,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:32:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:32:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:32:48,243 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1298525542, now seen corresponding path program 2 times [2020-04-18 11:32:48,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:48,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251362596] [2020-04-18 11:32:48,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:48,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251362596] [2020-04-18 11:32:48,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:48,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:48,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:48,253 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:48,256 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:32:48,256 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:48,258 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:48,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:48,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:48,258 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:32:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:48,261 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:32:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:32:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:32:48,261 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:48,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:48,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 3 times [2020-04-18 11:32:48,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:48,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540205355] [2020-04-18 11:32:48,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:48,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540205355] [2020-04-18 11:32:48,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:48,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:48,280 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:48,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:48,282 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:32:48,282 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:48,291 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:48,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:48,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:48,291 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:32:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:48,308 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:32:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:32:48,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:48,308 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [921639610] [2020-04-18 11:32:48,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:48,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:48,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [921639610] [2020-04-18 11:32:48,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:48,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:48,310 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-04-18 11:32:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:48,609 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-04-18 11:32:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:48,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:32:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:48,740 INFO L225 Difference]: With dead ends: 41885 [2020-04-18 11:32:48,740 INFO L226 Difference]: Without dead ends: 41856 [2020-04-18 11:32:48,741 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-04-18 11:32:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-04-18 11:32:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-04-18 11:32:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-04-18 11:32:51,988 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-04-18 11:32:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:51,988 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-04-18 11:32:51,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-04-18 11:32:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:51,989 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:51,989 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:51,989 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-04-18 11:32:51,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:51,990 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [13230622] [2020-04-18 11:32:51,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:51,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 151 transitions. [2020-04-18 11:32:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:32:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:51,992 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2126269866, now seen corresponding path program 2 times [2020-04-18 11:32:51,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:51,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263747290] [2020-04-18 11:32:51,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:52,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263747290] [2020-04-18 11:32:52,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:52,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:52,001 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,002 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,007 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 94 transitions. [2020-04-18 11:32:52,007 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,010 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:52,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:52,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:52,011 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:32:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,017 INFO L93 Difference]: Finished difference Result 89 states and 163 transitions. [2020-04-18 11:32:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 163 transitions. [2020-04-18 11:32:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:52,017 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,018 INFO L82 PathProgramCache]: Analyzing trace with hash 269417922, now seen corresponding path program 3 times [2020-04-18 11:32:52,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924338844] [2020-04-18 11:32:52,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:52,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924338844] [2020-04-18 11:32:52,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:52,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:52,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,037 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,040 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-04-18 11:32:52,040 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,047 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:52,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:52,048 INFO L87 Difference]: Start difference. First operand 89 states and 163 transitions. Second operand 5 states. [2020-04-18 11:32:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,079 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-04-18 11:32:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-04-18 11:32:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:52,080 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash 269416872, now seen corresponding path program 4 times [2020-04-18 11:32:52,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988176851] [2020-04-18 11:32:52,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:52,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988176851] [2020-04-18 11:32:52,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197883348] [2020-04-18 11:32:52,100 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:52,191 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:52,191 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:52,191 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:52,192 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:52,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:52,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:32:52,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,209 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-04-18 11:32:52,209 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,230 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:52,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:52,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:32:52,231 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 7 states. [2020-04-18 11:32:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,277 INFO L93 Difference]: Finished difference Result 103 states and 172 transitions. [2020-04-18 11:32:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 172 transitions. [2020-04-18 11:32:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:52,278 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:52,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 5 times [2020-04-18 11:32:52,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251615942] [2020-04-18 11:32:52,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:52,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251615942] [2020-04-18 11:32:52,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004739657] [2020-04-18 11:32:52,326 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:52,413 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:32:52,413 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:52,414 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:52,415 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:52,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:52,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:52,431 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,432 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-04-18 11:32:52,436 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,515 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:52,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:32:52,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:32:52,516 INFO L87 Difference]: Start difference. First operand 103 states and 172 transitions. Second operand 12 states. [2020-04-18 11:32:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,628 INFO L93 Difference]: Finished difference Result 103 states and 172 transitions. [2020-04-18 11:32:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 172 transitions. [2020-04-18 11:32:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:52,629 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 6 times [2020-04-18 11:32:52,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298667326] [2020-04-18 11:32:52,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:52,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298667326] [2020-04-18 11:32:52,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:52,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:52,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,696 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,699 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:32:52,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,714 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:52,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:32:52,715 INFO L87 Difference]: Start difference. First operand 103 states and 172 transitions. Second operand 7 states. [2020-04-18 11:32:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,801 INFO L93 Difference]: Finished difference Result 103 states and 172 transitions. [2020-04-18 11:32:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 172 transitions. [2020-04-18 11:32:52,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:52,802 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [13230622] [2020-04-18 11:32:52,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:52,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:52,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [13230622] [2020-04-18 11:32:52,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:32:52,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:52,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:32:52,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:32:52,804 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 14 states. [2020-04-18 11:32:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:53,761 INFO L93 Difference]: Finished difference Result 83516 states and 377086 transitions. [2020-04-18 11:32:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:32:53,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-04-18 11:32:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:54,008 INFO L225 Difference]: With dead ends: 83516 [2020-04-18 11:32:54,008 INFO L226 Difference]: Without dead ends: 83431 [2020-04-18 11:32:54,009 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 11:32:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83431 states. [2020-04-18 11:32:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83431 to 28061. [2020-04-18 11:32:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-04-18 11:32:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-04-18 11:32:56,602 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-04-18 11:32:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:56,602 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-04-18 11:32:56,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:32:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-04-18 11:32:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:56,603 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:56,603 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:57,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:57,004 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:57,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:57,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-04-18 11:32:57,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:57,005 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1687758800] [2020-04-18 11:32:57,006 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:57,007 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:32:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:32:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:57,008 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1952477143, now seen corresponding path program 2 times [2020-04-18 11:32:57,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:57,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735567461] [2020-04-18 11:32:57,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:57,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735567461] [2020-04-18 11:32:57,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:57,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:57,016 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:57,017 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:57,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 45 transitions. [2020-04-18 11:32:57,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:57,021 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:57,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:57,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:57,022 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:32:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:57,029 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2020-04-18 11:32:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-04-18 11:32:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:57,030 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2138426399, now seen corresponding path program 3 times [2020-04-18 11:32:57,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:57,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152457504] [2020-04-18 11:32:57,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:57,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152457504] [2020-04-18 11:32:57,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:57,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:57,051 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:57,052 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:57,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 21 transitions. [2020-04-18 11:32:57,054 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:57,061 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:57,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:57,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:57,061 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 5 states. [2020-04-18 11:32:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:57,095 INFO L93 Difference]: Finished difference Result 76 states and 124 transitions. [2020-04-18 11:32:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 124 transitions. [2020-04-18 11:32:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:57,095 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 4 times [2020-04-18 11:32:57,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:57,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192188096] [2020-04-18 11:32:57,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:57,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192188096] [2020-04-18 11:32:57,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:57,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:57,124 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:57,124 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:57,126 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:32:57,127 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:57,136 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:57,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:32:57,137 INFO L87 Difference]: Start difference. First operand 76 states and 124 transitions. Second operand 7 states. [2020-04-18 11:32:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:57,214 INFO L93 Difference]: Finished difference Result 77 states and 124 transitions. [2020-04-18 11:32:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 124 transitions. [2020-04-18 11:32:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:57,215 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 5 times [2020-04-18 11:32:57,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:57,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788275689] [2020-04-18 11:32:57,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:57,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788275689] [2020-04-18 11:32:57,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:57,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:57,246 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:57,247 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:57,250 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-04-18 11:32:57,250 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:57,314 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:57,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:32:57,315 INFO L87 Difference]: Start difference. First operand 77 states and 124 transitions. Second operand 11 states. [2020-04-18 11:32:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:57,442 INFO L93 Difference]: Finished difference Result 80 states and 127 transitions. [2020-04-18 11:32:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 127 transitions. [2020-04-18 11:32:57,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:57,442 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1687758800] [2020-04-18 11:32:57,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:57,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:57,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1687758800] [2020-04-18 11:32:57,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:32:57,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:57,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:57,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:32:57,444 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 13 states. [2020-04-18 11:32:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:58,613 INFO L93 Difference]: Finished difference Result 89447 states and 400291 transitions. [2020-04-18 11:32:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:32:58,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-04-18 11:32:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:58,867 INFO L225 Difference]: With dead ends: 89447 [2020-04-18 11:32:58,867 INFO L226 Difference]: Without dead ends: 89337 [2020-04-18 11:32:58,867 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 11:33:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89337 states. [2020-04-18 11:33:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89337 to 29094. [2020-04-18 11:33:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-04-18 11:33:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-04-18 11:33:03,423 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-04-18 11:33:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:03,423 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-04-18 11:33:03,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:33:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-04-18 11:33:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:03,424 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:03,424 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:03,424 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-04-18 11:33:03,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:03,425 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2100454459] [2020-04-18 11:33:03,425 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 405 transitions. [2020-04-18 11:33:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-04-18 11:33:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:03,428 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1059131539, now seen corresponding path program 2 times [2020-04-18 11:33:03,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:03,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509402444] [2020-04-18 11:33:03,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:03,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509402444] [2020-04-18 11:33:03,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:03,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:03,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:03,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,447 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 99 transitions. [2020-04-18 11:33:03,447 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,450 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:03,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:03,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:03,451 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-04-18 11:33:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:03,465 INFO L93 Difference]: Finished difference Result 203 states and 475 transitions. [2020-04-18 11:33:03,465 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 475 transitions. [2020-04-18 11:33:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:03,465 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1212625151, now seen corresponding path program 3 times [2020-04-18 11:33:03,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:03,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996925433] [2020-04-18 11:33:03,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:03,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996925433] [2020-04-18 11:33:03,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:03,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:03,487 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:03,488 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,493 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 46 transitions. [2020-04-18 11:33:03,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,501 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:03,501 INFO L87 Difference]: Start difference. First operand 203 states and 475 transitions. Second operand 5 states. [2020-04-18 11:33:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:03,555 INFO L93 Difference]: Finished difference Result 238 states and 528 transitions. [2020-04-18 11:33:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 528 transitions. [2020-04-18 11:33:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:03,557 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1211616101, now seen corresponding path program 4 times [2020-04-18 11:33:03,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:03,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283593160] [2020-04-18 11:33:03,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:03,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283593160] [2020-04-18 11:33:03,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003388803] [2020-04-18 11:33:03,578 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:03,670 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:03,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:03,671 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:03,671 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:03,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:03,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:33:03,681 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:03,681 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,686 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 49 transitions. [2020-04-18 11:33:03,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,704 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:03,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:03,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:33:03,704 INFO L87 Difference]: Start difference. First operand 238 states and 528 transitions. Second operand 7 states. [2020-04-18 11:33:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:03,785 INFO L93 Difference]: Finished difference Result 323 states and 649 transitions. [2020-04-18 11:33:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 649 transitions. [2020-04-18 11:33:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:03,786 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1211597771, now seen corresponding path program 5 times [2020-04-18 11:33:03,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:03,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323192029] [2020-04-18 11:33:03,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:03,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323192029] [2020-04-18 11:33:03,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883233233] [2020-04-18 11:33:03,819 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:03,913 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:33:03,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:03,914 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:03,915 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:03,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:03,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:03,926 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:03,927 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,931 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 45 transitions. [2020-04-18 11:33:03,931 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,949 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:03,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:03,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:33:03,950 INFO L87 Difference]: Start difference. First operand 323 states and 649 transitions. Second operand 9 states. [2020-04-18 11:33:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:04,165 INFO L93 Difference]: Finished difference Result 382 states and 708 transitions. [2020-04-18 11:33:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 708 transitions. [2020-04-18 11:33:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:04,166 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:33:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:04,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1212072191, now seen corresponding path program 6 times [2020-04-18 11:33:04,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:04,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076137358] [2020-04-18 11:33:04,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:04,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076137358] [2020-04-18 11:33:04,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:04,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:33:04,213 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:04,214 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:04,220 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 45 transitions. [2020-04-18 11:33:04,220 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:04,221 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:04,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:33:04,221 INFO L87 Difference]: Start difference. First operand 382 states and 708 transitions. Second operand 7 states. [2020-04-18 11:33:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:04,376 INFO L93 Difference]: Finished difference Result 452 states and 797 transitions. [2020-04-18 11:33:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 797 transitions. [2020-04-18 11:33:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:04,377 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:33:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:04,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1393043291, now seen corresponding path program 7 times [2020-04-18 11:33:04,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:04,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518316007] [2020-04-18 11:33:04,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:04,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518316007] [2020-04-18 11:33:04,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4670269] [2020-04-18 11:33:04,404 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:04,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:04,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:04,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:04,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:33:04,512 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:04,513 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:04,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:33:04,517 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:04,594 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:33:04,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:33:04,595 INFO L87 Difference]: Start difference. First operand 452 states and 797 transitions. Second operand 12 states. [2020-04-18 11:33:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:04,902 INFO L93 Difference]: Finished difference Result 467 states and 808 transitions. [2020-04-18 11:33:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 808 transitions. [2020-04-18 11:33:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:04,903 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:33:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:04,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 8 times [2020-04-18 11:33:04,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:04,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423123110] [2020-04-18 11:33:04,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:04,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423123110] [2020-04-18 11:33:04,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198713062] [2020-04-18 11:33:04,944 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:05,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:33:05,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:05,034 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:05,034 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:05,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:05,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:05,049 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:05,050 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:05,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:33:05,054 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:05,100 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:05,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:33:05,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=962, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:33:05,101 INFO L87 Difference]: Start difference. First operand 467 states and 808 transitions. Second operand 14 states. [2020-04-18 11:33:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:05,697 INFO L93 Difference]: Finished difference Result 467 states and 808 transitions. [2020-04-18 11:33:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 808 transitions. [2020-04-18 11:33:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:05,698 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:33:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:05,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 9 times [2020-04-18 11:33:05,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:05,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005840847] [2020-04-18 11:33:05,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:05,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005840847] [2020-04-18 11:33:05,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68960206] [2020-04-18 11:33:05,739 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:05,831 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 11:33:05,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:05,832 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:05,832 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:05,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:05,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:05,847 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:05,848 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:05,853 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-04-18 11:33:05,853 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:05,962 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:33:05,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 11:33:05,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=2327, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 11:33:05,962 INFO L87 Difference]: Start difference. First operand 467 states and 808 transitions. Second operand 18 states. [2020-04-18 11:33:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:06,710 INFO L93 Difference]: Finished difference Result 474 states and 813 transitions. [2020-04-18 11:33:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 813 transitions. [2020-04-18 11:33:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:06,711 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:33:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:06,711 INFO L82 PathProgramCache]: Analyzing trace with hash -2073528999, now seen corresponding path program 10 times [2020-04-18 11:33:06,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:06,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899623756] [2020-04-18 11:33:06,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:06,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899623756] [2020-04-18 11:33:06,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:06,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:33:06,741 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:06,742 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:06,745 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 23 transitions. [2020-04-18 11:33:06,745 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:06,757 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:06,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:06,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=984, Invalid=3846, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 11:33:06,758 INFO L87 Difference]: Start difference. First operand 474 states and 813 transitions. Second operand 7 states. [2020-04-18 11:33:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:06,950 INFO L93 Difference]: Finished difference Result 489 states and 824 transitions. [2020-04-18 11:33:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 824 transitions. [2020-04-18 11:33:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:06,951 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:33:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:06,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 11 times [2020-04-18 11:33:06,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:06,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042379885] [2020-04-18 11:33:06,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:06,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042379885] [2020-04-18 11:33:06,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:06,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:06,999 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:07,001 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:07,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:33:07,004 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:07,005 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:07,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:07,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1097, Invalid=4603, Unknown=0, NotChecked=0, Total=5700 [2020-04-18 11:33:07,006 INFO L87 Difference]: Start difference. First operand 489 states and 824 transitions. Second operand 9 states. [2020-04-18 11:33:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:07,425 INFO L93 Difference]: Finished difference Result 489 states and 824 transitions. [2020-04-18 11:33:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 824 transitions. [2020-04-18 11:33:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:07,426 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:33:07,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:07,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 12 times [2020-04-18 11:33:07,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:07,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418594384] [2020-04-18 11:33:07,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:07,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418594384] [2020-04-18 11:33:07,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:07,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:07,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:07,468 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:07,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:33:07,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:07,484 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:07,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1437, Invalid=6395, Unknown=0, NotChecked=0, Total=7832 [2020-04-18 11:33:07,486 INFO L87 Difference]: Start difference. First operand 489 states and 824 transitions. Second operand 9 states. [2020-04-18 11:33:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:07,919 INFO L93 Difference]: Finished difference Result 496 states and 828 transitions. [2020-04-18 11:33:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2020-04-18 11:33:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:07,920 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:33:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:07,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 13 times [2020-04-18 11:33:07,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:07,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710906514] [2020-04-18 11:33:07,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:07,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710906514] [2020-04-18 11:33:07,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:07,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:07,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:07,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:07,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:33:07,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:08,091 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:33:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:33:08,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=9619, Unknown=0, NotChecked=0, Total=11556 [2020-04-18 11:33:08,093 INFO L87 Difference]: Start difference. First operand 496 states and 828 transitions. Second operand 17 states. [2020-04-18 11:33:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:08,864 INFO L93 Difference]: Finished difference Result 496 states and 828 transitions. [2020-04-18 11:33:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2020-04-18 11:33:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:08,866 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:33:08,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 14 times [2020-04-18 11:33:08,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:08,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928851637] [2020-04-18 11:33:08,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:08,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928851637] [2020-04-18 11:33:08,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:08,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:08,924 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:08,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:08,929 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-04-18 11:33:08,930 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:08,931 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2476, Invalid=13024, Unknown=0, NotChecked=0, Total=15500 [2020-04-18 11:33:08,934 INFO L87 Difference]: Start difference. First operand 496 states and 828 transitions. Second operand 13 states. [2020-04-18 11:33:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:09,899 INFO L93 Difference]: Finished difference Result 496 states and 828 transitions. [2020-04-18 11:33:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2020-04-18 11:33:09,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:09,901 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2100454459] [2020-04-18 11:33:09,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:09,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:33:09,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2100454459] [2020-04-18 11:33:09,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 11:33:09,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 11:33:09,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2990, Invalid=16470, Unknown=0, NotChecked=0, Total=19460 [2020-04-18 11:33:09,903 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 28 states. [2020-04-18 11:33:18,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:18,404 INFO L93 Difference]: Finished difference Result 184065 states and 731893 transitions. [2020-04-18 11:33:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2020-04-18 11:33:18,405 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 21 [2020-04-18 11:33:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:19,031 INFO L225 Difference]: With dead ends: 184065 [2020-04-18 11:33:19,031 INFO L226 Difference]: Without dead ends: 183845 [2020-04-18 11:33:19,034 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 477 SyntacticMatches, 3 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47924 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=13555, Invalid=94357, Unknown=0, NotChecked=0, Total=107912 [2020-04-18 11:33:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183845 states. [2020-04-18 11:33:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183845 to 25744. [2020-04-18 11:33:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-04-18 11:33:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-04-18 11:33:25,837 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-04-18 11:33:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:25,837 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-04-18 11:33:25,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 11:33:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-04-18 11:33:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:25,838 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:25,838 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:26,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:26,841 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-04-18 11:33:26,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:26,842 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1995108477] [2020-04-18 11:33:26,843 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:26,843 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-04-18 11:33:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 11:33:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:26,844 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2131721569, now seen corresponding path program 2 times [2020-04-18 11:33:26,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:26,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430909822] [2020-04-18 11:33:26,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:26,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430909822] [2020-04-18 11:33:26,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:26,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:26,853 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:26,854 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:26,857 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:33:26,857 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:26,865 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:26,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:26,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:26,866 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-04-18 11:33:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:26,868 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:33:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:33:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:26,868 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 3 times [2020-04-18 11:33:26,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:26,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293263542] [2020-04-18 11:33:26,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:26,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293263542] [2020-04-18 11:33:26,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:26,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:33:26,889 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:26,890 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:26,893 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:33:26,893 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:26,900 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:26,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:26,900 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 5 states. [2020-04-18 11:33:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:26,916 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:33:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:33:26,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:26,916 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1995108477] [2020-04-18 11:33:26,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:26,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:33:26,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1995108477] [2020-04-18 11:33:26,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:33:26,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:26,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:26,917 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-04-18 11:33:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:27,242 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-04-18 11:33:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:33:27,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:33:27,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:27,383 INFO L225 Difference]: With dead ends: 46463 [2020-04-18 11:33:27,383 INFO L226 Difference]: Without dead ends: 46417 [2020-04-18 11:33:27,383 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-04-18 11:33:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-04-18 11:33:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-04-18 11:33:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-04-18 11:33:28,828 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-04-18 11:33:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:28,829 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-04-18 11:33:28,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:33:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-04-18 11:33:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:28,830 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:28,830 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:28,830 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-04-18 11:33:28,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:28,831 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1468011686] [2020-04-18 11:33:28,831 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:28,833 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 203 transitions. [2020-04-18 11:33:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-18 11:33:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:28,833 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2086035311, now seen corresponding path program 2 times [2020-04-18 11:33:28,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:28,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121865369] [2020-04-18 11:33:28,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:28,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121865369] [2020-04-18 11:33:28,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:28,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:28,841 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:28,841 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:28,848 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 126 transitions. [2020-04-18 11:33:28,848 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:28,850 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:28,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:28,850 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-04-18 11:33:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:28,858 INFO L93 Difference]: Finished difference Result 117 states and 219 transitions. [2020-04-18 11:33:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 219 transitions. [2020-04-18 11:33:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:28,859 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1107229367, now seen corresponding path program 3 times [2020-04-18 11:33:28,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:28,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840603492] [2020-04-18 11:33:28,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:28,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840603492] [2020-04-18 11:33:28,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:28,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:28,879 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:28,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:28,884 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 52 transitions. [2020-04-18 11:33:28,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:28,892 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:28,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:28,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:28,893 INFO L87 Difference]: Start difference. First operand 117 states and 219 transitions. Second operand 5 states. [2020-04-18 11:33:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:28,927 INFO L93 Difference]: Finished difference Result 124 states and 224 transitions. [2020-04-18 11:33:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 224 transitions. [2020-04-18 11:33:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:28,927 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:28,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1107230417, now seen corresponding path program 4 times [2020-04-18 11:33:28,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:28,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309221295] [2020-04-18 11:33:28,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:28,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309221295] [2020-04-18 11:33:28,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214722371] [2020-04-18 11:33:28,945 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:29,035 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:29,035 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:29,036 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:29,036 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:29,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:29,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:33:29,050 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:29,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:29,056 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 52 transitions. [2020-04-18 11:33:29,056 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:29,077 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:29,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:29,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:33:29,078 INFO L87 Difference]: Start difference. First operand 124 states and 224 transitions. Second operand 7 states. [2020-04-18 11:33:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:29,128 INFO L93 Difference]: Finished difference Result 131 states and 228 transitions. [2020-04-18 11:33:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 228 transitions. [2020-04-18 11:33:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:29,128 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:29,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 5 times [2020-04-18 11:33:29,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:29,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656041444] [2020-04-18 11:33:29,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:29,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656041444] [2020-04-18 11:33:29,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927468614] [2020-04-18 11:33:29,170 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:29,261 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:33:29,261 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:29,262 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:29,263 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:29,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:29,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:29,279 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:29,280 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:29,285 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-04-18 11:33:29,285 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:29,380 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:33:29,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:29,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:33:29,381 INFO L87 Difference]: Start difference. First operand 131 states and 228 transitions. Second operand 13 states. [2020-04-18 11:33:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:29,497 INFO L93 Difference]: Finished difference Result 131 states and 228 transitions. [2020-04-18 11:33:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 228 transitions. [2020-04-18 11:33:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:29,498 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:33:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 6 times [2020-04-18 11:33:29,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:29,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143755929] [2020-04-18 11:33:29,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:29,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143755929] [2020-04-18 11:33:29,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:29,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:29,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:29,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:29,531 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:33:29,531 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:29,540 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:29,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:29,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:33:29,540 INFO L87 Difference]: Start difference. First operand 131 states and 228 transitions. Second operand 7 states. [2020-04-18 11:33:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:30,073 INFO L93 Difference]: Finished difference Result 131 states and 228 transitions. [2020-04-18 11:33:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 228 transitions. [2020-04-18 11:33:30,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:30,074 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1468011686] [2020-04-18 11:33:30,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:30,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:33:30,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1468011686] [2020-04-18 11:33:30,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:33:30,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:30,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:33:30,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:33:30,075 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 15 states. [2020-04-18 11:33:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:31,276 INFO L93 Difference]: Finished difference Result 94350 states and 432647 transitions. [2020-04-18 11:33:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:33:31,276 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2020-04-18 11:33:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:31,558 INFO L225 Difference]: With dead ends: 94350 [2020-04-18 11:33:31,558 INFO L226 Difference]: Without dead ends: 94208 [2020-04-18 11:33:31,558 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=436, Invalid=1204, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 11:33:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94208 states. [2020-04-18 11:33:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94208 to 32410. [2020-04-18 11:33:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32410 states. [2020-04-18 11:33:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32410 states to 32410 states and 173487 transitions. [2020-04-18 11:33:37,110 INFO L78 Accepts]: Start accepts. Automaton has 32410 states and 173487 transitions. Word has length 23 [2020-04-18 11:33:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:37,110 INFO L479 AbstractCegarLoop]: Abstraction has 32410 states and 173487 transitions. [2020-04-18 11:33:37,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:33:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 32410 states and 173487 transitions. [2020-04-18 11:33:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:37,112 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:37,112 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:37,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:37,513 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:37,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-04-18 11:33:37,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:37,515 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2000387287] [2020-04-18 11:33:37,515 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 123 transitions. [2020-04-18 11:33:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 11:33:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:37,517 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1724453322, now seen corresponding path program 2 times [2020-04-18 11:33:37,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078244746] [2020-04-18 11:33:37,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:37,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078244746] [2020-04-18 11:33:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:37,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:37,528 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,529 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,533 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 85 transitions. [2020-04-18 11:33:37,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,536 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:37,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:37,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:37,536 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-04-18 11:33:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:37,543 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2020-04-18 11:33:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 131 transitions. [2020-04-18 11:33:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:37,544 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1118728608, now seen corresponding path program 3 times [2020-04-18 11:33:37,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126100928] [2020-04-18 11:33:37,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:37,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126100928] [2020-04-18 11:33:37,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394669799] [2020-04-18 11:33:37,564 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:37,646 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:33:37,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:37,647 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:37,648 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:37,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:37,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:33:37,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,666 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 49 transitions. [2020-04-18 11:33:37,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,684 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:33:37,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:37,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:37,684 INFO L87 Difference]: Start difference. First operand 77 states and 131 transitions. Second operand 7 states. [2020-04-18 11:33:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:37,728 INFO L93 Difference]: Finished difference Result 84 states and 136 transitions. [2020-04-18 11:33:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 136 transitions. [2020-04-18 11:33:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:37,729 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 4 times [2020-04-18 11:33:37,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708798372] [2020-04-18 11:33:37,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:37,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708798372] [2020-04-18 11:33:37,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303385761] [2020-04-18 11:33:37,758 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:37,850 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:37,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:37,850 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:37,851 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:37,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:37,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:37,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,869 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-04-18 11:33:37,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,881 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:33:37,881 INFO L87 Difference]: Start difference. First operand 84 states and 136 transitions. Second operand 9 states. [2020-04-18 11:33:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:37,970 INFO L93 Difference]: Finished difference Result 85 states and 136 transitions. [2020-04-18 11:33:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 136 transitions. [2020-04-18 11:33:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:37,971 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,971 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 5 times [2020-04-18 11:33:37,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104514956] [2020-04-18 11:33:37,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:38,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104514956] [2020-04-18 11:33:38,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:38,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:38,005 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:38,006 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:38,009 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:33:38,009 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:38,023 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:38,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:38,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:33:38,023 INFO L87 Difference]: Start difference. First operand 85 states and 136 transitions. Second operand 7 states. [2020-04-18 11:33:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:38,120 INFO L93 Difference]: Finished difference Result 88 states and 139 transitions. [2020-04-18 11:33:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 139 transitions. [2020-04-18 11:33:38,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:38,121 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2000387287] [2020-04-18 11:33:38,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:38,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:33:38,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2000387287] [2020-04-18 11:33:38,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:33:38,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:33:38,122 INFO L87 Difference]: Start difference. First operand 32410 states and 173487 transitions. Second operand 11 states. [2020-04-18 11:33:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:38,807 INFO L93 Difference]: Finished difference Result 89551 states and 421651 transitions. [2020-04-18 11:33:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:33:38,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-04-18 11:33:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:39,082 INFO L225 Difference]: With dead ends: 89551 [2020-04-18 11:33:39,082 INFO L226 Difference]: Without dead ends: 89454 [2020-04-18 11:33:39,082 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:33:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89454 states. [2020-04-18 11:33:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89454 to 34508. [2020-04-18 11:33:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-04-18 11:33:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-04-18 11:33:41,707 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-04-18 11:33:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:41,708 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-04-18 11:33:41,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:33:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-04-18 11:33:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:41,709 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:41,709 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:42,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:42,111 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:42,111 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-04-18 11:33:42,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:42,112 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1250838081] [2020-04-18 11:33:42,113 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:42,115 INFO L259 McrAutomatonBuilder]: Finished intersection with 84 states and 163 transitions. [2020-04-18 11:33:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-04-18 11:33:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:42,115 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:42,116 INFO L82 PathProgramCache]: Analyzing trace with hash -114932514, now seen corresponding path program 2 times [2020-04-18 11:33:42,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:42,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359835996] [2020-04-18 11:33:42,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:42,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359835996] [2020-04-18 11:33:42,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:42,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:42,124 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:42,125 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:42,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 57 transitions. [2020-04-18 11:33:42,129 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:42,131 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:42,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:42,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:42,131 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-04-18 11:33:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:42,139 INFO L93 Difference]: Finished difference Result 97 states and 175 transitions. [2020-04-18 11:33:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 175 transitions. [2020-04-18 11:33:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:42,139 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash -617737926, now seen corresponding path program 3 times [2020-04-18 11:33:42,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:42,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251536285] [2020-04-18 11:33:42,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:42,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251536285] [2020-04-18 11:33:42,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:42,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:42,182 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:42,183 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:42,187 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 25 transitions. [2020-04-18 11:33:42,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:42,198 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:42,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:42,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:42,199 INFO L87 Difference]: Start difference. First operand 97 states and 175 transitions. Second operand 5 states. [2020-04-18 11:33:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:42,232 INFO L93 Difference]: Finished difference Result 104 states and 180 transitions. [2020-04-18 11:33:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 180 transitions. [2020-04-18 11:33:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:42,233 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:42,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:42,234 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 4 times [2020-04-18 11:33:42,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:42,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464345102] [2020-04-18 11:33:42,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:42,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464345102] [2020-04-18 11:33:42,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:42,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:42,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:42,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:42,265 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:33:42,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:42,275 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:42,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:42,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:33:42,276 INFO L87 Difference]: Start difference. First operand 104 states and 180 transitions. Second operand 7 states. [2020-04-18 11:33:42,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:42,350 INFO L93 Difference]: Finished difference Result 105 states and 180 transitions. [2020-04-18 11:33:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 180 transitions. [2020-04-18 11:33:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:33:42,350 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:42,351 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 5 times [2020-04-18 11:33:42,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:42,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131600671] [2020-04-18 11:33:42,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:42,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131600671] [2020-04-18 11:33:42,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:42,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:42,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:42,385 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:42,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-04-18 11:33:42,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:42,530 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:33:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:42,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:33:42,531 INFO L87 Difference]: Start difference. First operand 105 states and 180 transitions. Second operand 13 states. [2020-04-18 11:33:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:42,669 INFO L93 Difference]: Finished difference Result 108 states and 183 transitions. [2020-04-18 11:33:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 183 transitions. [2020-04-18 11:33:42,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:42,670 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1250838081] [2020-04-18 11:33:42,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:42,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:33:42,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1250838081] [2020-04-18 11:33:42,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:33:42,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:42,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:33:42,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:33:42,672 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 15 states. [2020-04-18 11:33:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:44,045 INFO L93 Difference]: Finished difference Result 107380 states and 487761 transitions. [2020-04-18 11:33:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:33:44,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2020-04-18 11:33:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:44,375 INFO L225 Difference]: With dead ends: 107380 [2020-04-18 11:33:44,376 INFO L226 Difference]: Without dead ends: 107189 [2020-04-18 11:33:44,376 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=585, Invalid=1767, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 11:33:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107189 states. [2020-04-18 11:33:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107189 to 37062. [2020-04-18 11:33:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-04-18 11:33:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-04-18 11:33:47,631 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-04-18 11:33:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:47,631 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-04-18 11:33:47,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:33:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-04-18 11:33:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:47,634 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:47,634 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:47,634 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-04-18 11:33:47,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:47,635 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1741233125] [2020-04-18 11:33:47,635 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:47,638 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 457 transitions. [2020-04-18 11:33:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-04-18 11:33:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:47,639 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,639 INFO L82 PathProgramCache]: Analyzing trace with hash 574724282, now seen corresponding path program 2 times [2020-04-18 11:33:47,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:47,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517903521] [2020-04-18 11:33:47,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:47,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517903521] [2020-04-18 11:33:47,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:47,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:47,649 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:47,650 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:47,661 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 203 transitions. [2020-04-18 11:33:47,661 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:47,664 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:47,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:47,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:47,664 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-04-18 11:33:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:47,676 INFO L93 Difference]: Finished difference Result 231 states and 531 transitions. [2020-04-18 11:33:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 531 transitions. [2020-04-18 11:33:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:47,677 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,677 INFO L82 PathProgramCache]: Analyzing trace with hash -899589434, now seen corresponding path program 3 times [2020-04-18 11:33:47,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:47,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516459838] [2020-04-18 11:33:47,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:47,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516459838] [2020-04-18 11:33:47,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349889221] [2020-04-18 11:33:47,699 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:47,792 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:33:47,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:47,793 INFO L264 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:47,794 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:47,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:47,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:33:47,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:47,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:47,815 INFO L259 McrAutomatonBuilder]: Finished intersection with 73 states and 121 transitions. [2020-04-18 11:33:47,815 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:47,835 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:33:47,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:47,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:47,836 INFO L87 Difference]: Start difference. First operand 231 states and 531 transitions. Second operand 7 states. [2020-04-18 11:33:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:47,912 INFO L93 Difference]: Finished difference Result 294 states and 632 transitions. [2020-04-18 11:33:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 632 transitions. [2020-04-18 11:33:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:47,913 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash 542684702, now seen corresponding path program 4 times [2020-04-18 11:33:47,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:47,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429646840] [2020-04-18 11:33:47,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:47,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429646840] [2020-04-18 11:33:47,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530419904] [2020-04-18 11:33:47,947 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:48,044 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:48,044 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:48,045 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:48,046 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:48,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:48,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:33:48,058 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:48,059 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:48,067 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 101 transitions. [2020-04-18 11:33:48,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:48,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:33:48,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:33:48,079 INFO L87 Difference]: Start difference. First operand 294 states and 632 transitions. Second operand 9 states. [2020-04-18 11:33:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:48,291 INFO L93 Difference]: Finished difference Result 336 states and 684 transitions. [2020-04-18 11:33:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 684 transitions. [2020-04-18 11:33:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:48,292 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash 542683652, now seen corresponding path program 5 times [2020-04-18 11:33:48,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:48,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463714268] [2020-04-18 11:33:48,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:48,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463714268] [2020-04-18 11:33:48,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184474292] [2020-04-18 11:33:48,312 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:48,407 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:33:48,407 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:48,409 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:48,409 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:48,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:48,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:33:48,421 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:48,422 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:48,432 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 110 transitions. [2020-04-18 11:33:48,432 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:48,510 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 11:33:48,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:48,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:33:48,511 INFO L87 Difference]: Start difference. First operand 336 states and 684 transitions. Second operand 11 states. [2020-04-18 11:33:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:48,633 INFO L93 Difference]: Finished difference Result 434 states and 804 transitions. [2020-04-18 11:33:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 804 transitions. [2020-04-18 11:33:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:48,634 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:33:48,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:48,634 INFO L82 PathProgramCache]: Analyzing trace with hash 543336512, now seen corresponding path program 6 times [2020-04-18 11:33:48,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:48,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97544584] [2020-04-18 11:33:48,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:48,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97544584] [2020-04-18 11:33:48,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721648788] [2020-04-18 11:33:48,667 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:48,759 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:33:48,759 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:48,760 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:48,760 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:48,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:48,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:48,775 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:48,776 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:48,785 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 101 transitions. [2020-04-18 11:33:48,785 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:48,787 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:33:48,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:48,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:33:48,788 INFO L87 Difference]: Start difference. First operand 434 states and 804 transitions. Second operand 11 states. [2020-04-18 11:33:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:49,105 INFO L93 Difference]: Finished difference Result 480 states and 853 transitions. [2020-04-18 11:33:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 853 transitions. [2020-04-18 11:33:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:49,107 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:33:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:49,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1103270398, now seen corresponding path program 7 times [2020-04-18 11:33:49,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:49,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101772324] [2020-04-18 11:33:49,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:49,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101772324] [2020-04-18 11:33:49,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:49,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:33:49,158 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:49,161 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:49,174 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:33:49,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:49,219 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:49,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:49,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:33:49,221 INFO L87 Difference]: Start difference. First operand 480 states and 853 transitions. Second operand 7 states. [2020-04-18 11:33:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:49,506 INFO L93 Difference]: Finished difference Result 499 states and 867 transitions. [2020-04-18 11:33:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 867 transitions. [2020-04-18 11:33:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:49,507 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:33:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1103458138, now seen corresponding path program 8 times [2020-04-18 11:33:49,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:49,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860388442] [2020-04-18 11:33:49,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:49,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860388442] [2020-04-18 11:33:49,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985071178] [2020-04-18 11:33:49,544 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:49,641 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:33:49,641 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:49,642 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:49,642 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:49,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:49,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:49,656 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:49,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:49,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:33:49,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:49,665 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:33:49,665 INFO L87 Difference]: Start difference. First operand 499 states and 867 transitions. Second operand 9 states. [2020-04-18 11:33:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:49,866 INFO L93 Difference]: Finished difference Result 510 states and 873 transitions. [2020-04-18 11:33:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 873 transitions. [2020-04-18 11:33:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:49,867 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:33:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:49,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 9 times [2020-04-18 11:33:49,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:49,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966496627] [2020-04-18 11:33:49,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:49,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966496627] [2020-04-18 11:33:49,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317569633] [2020-04-18 11:33:49,907 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:49,998 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 11:33:49,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:49,998 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:49,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:50,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:50,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:50,013 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:50,014 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:50,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:33:50,021 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:50,103 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:33:50,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:33:50,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1728, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 11:33:50,104 INFO L87 Difference]: Start difference. First operand 510 states and 873 transitions. Second operand 15 states. [2020-04-18 11:33:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:52,873 INFO L93 Difference]: Finished difference Result 510 states and 873 transitions. [2020-04-18 11:33:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 873 transitions. [2020-04-18 11:33:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:52,874 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:33:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 10 times [2020-04-18 11:33:52,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:52,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494760437] [2020-04-18 11:33:52,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:52,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494760437] [2020-04-18 11:33:52,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780867141] [2020-04-18 11:33:52,917 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:53,009 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:53,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:53,010 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:53,010 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:33:53,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:53,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:53,025 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:53,027 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:53,036 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:33:53,036 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:53,170 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 11:33:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:33:53,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=3451, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 11:33:53,171 INFO L87 Difference]: Start difference. First operand 510 states and 873 transitions. Second operand 19 states. [2020-04-18 11:33:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:53,985 INFO L93 Difference]: Finished difference Result 510 states and 873 transitions. [2020-04-18 11:33:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 873 transitions. [2020-04-18 11:33:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:53,986 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:33:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:53,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1848455064, now seen corresponding path program 11 times [2020-04-18 11:33:53,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:53,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646448007] [2020-04-18 11:33:53,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:54,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646448007] [2020-04-18 11:33:54,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205942920] [2020-04-18 11:33:54,014 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:54,105 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:33:54,106 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:54,106 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:54,107 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:54,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:54,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:54,120 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:54,122 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:54,127 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 54 transitions. [2020-04-18 11:33:54,128 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:54,144 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:33:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1201, Invalid=5279, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 11:33:54,145 INFO L87 Difference]: Start difference. First operand 510 states and 873 transitions. Second operand 9 states. [2020-04-18 11:33:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:54,385 INFO L93 Difference]: Finished difference Result 525 states and 884 transitions. [2020-04-18 11:33:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 884 transitions. [2020-04-18 11:33:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:54,386 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:33:54,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:54,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 12 times [2020-04-18 11:33:54,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:54,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897696865] [2020-04-18 11:33:54,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:54,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897696865] [2020-04-18 11:33:54,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145294902] [2020-04-18 11:33:54,467 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:54,589 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:33:54,590 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:54,591 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:54,592 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:54,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:54,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:54,630 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:54,633 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:54,640 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:33:54,640 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:54,642 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:54,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:54,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=6153, Unknown=0, NotChecked=0, Total=7482 [2020-04-18 11:33:54,643 INFO L87 Difference]: Start difference. First operand 525 states and 884 transitions. Second operand 13 states. [2020-04-18 11:33:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:55,193 INFO L93 Difference]: Finished difference Result 525 states and 884 transitions. [2020-04-18 11:33:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 884 transitions. [2020-04-18 11:33:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:55,194 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:33:55,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:55,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 13 times [2020-04-18 11:33:55,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:55,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95553945] [2020-04-18 11:33:55,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:55,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95553945] [2020-04-18 11:33:55,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333408579] [2020-04-18 11:33:55,239 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:55,330 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:55,331 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:55,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:55,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:55,345 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:55,347 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:55,352 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:33:55,352 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:55,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:55,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1698, Invalid=8202, Unknown=0, NotChecked=0, Total=9900 [2020-04-18 11:33:55,369 INFO L87 Difference]: Start difference. First operand 525 states and 884 transitions. Second operand 11 states. [2020-04-18 11:33:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:55,888 INFO L93 Difference]: Finished difference Result 532 states and 888 transitions. [2020-04-18 11:33:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 888 transitions. [2020-04-18 11:33:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:55,889 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:33:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:55,889 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 14 times [2020-04-18 11:33:55,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:55,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928102545] [2020-04-18 11:33:55,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:55,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928102545] [2020-04-18 11:33:55,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:55,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:55,936 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:55,937 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:55,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:33:55,942 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:55,942 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:55,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:55,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2105, Invalid=10777, Unknown=0, NotChecked=0, Total=12882 [2020-04-18 11:33:55,943 INFO L87 Difference]: Start difference. First operand 532 states and 888 transitions. Second operand 9 states. [2020-04-18 11:33:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:56,448 INFO L93 Difference]: Finished difference Result 532 states and 888 transitions. [2020-04-18 11:33:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 888 transitions. [2020-04-18 11:33:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:56,449 INFO L105 Mcr]: ---- MCR iteration 13 ---- [2020-04-18 11:33:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 15 times [2020-04-18 11:33:56,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:56,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838170368] [2020-04-18 11:33:56,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:56,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838170368] [2020-04-18 11:33:56,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:56,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:56,534 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:56,535 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:56,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:33:56,541 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:56,542 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:56,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:56,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2552, Invalid=13960, Unknown=0, NotChecked=0, Total=16512 [2020-04-18 11:33:56,544 INFO L87 Difference]: Start difference. First operand 532 states and 888 transitions. Second operand 9 states. [2020-04-18 11:33:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:56,991 INFO L93 Difference]: Finished difference Result 532 states and 888 transitions. [2020-04-18 11:33:56,991 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 888 transitions. [2020-04-18 11:33:56,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:56,993 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1741233125] [2020-04-18 11:33:56,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:56,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:33:56,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1741233125] [2020-04-18 11:33:56,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 11:33:56,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 11:33:56,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2953, Invalid=16787, Unknown=0, NotChecked=0, Total=19740 [2020-04-18 11:33:56,996 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 28 states. [2020-04-18 11:34:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:02,262 INFO L93 Difference]: Finished difference Result 181501 states and 778700 transitions. [2020-04-18 11:34:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:34:02,263 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 25 [2020-04-18 11:34:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:02,893 INFO L225 Difference]: With dead ends: 181501 [2020-04-18 11:34:02,893 INFO L226 Difference]: Without dead ends: 181305 [2020-04-18 11:34:02,894 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 715 SyntacticMatches, 4 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26267 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=8983, Invalid=55279, Unknown=0, NotChecked=0, Total=64262 [2020-04-18 11:34:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181305 states. [2020-04-18 11:34:07,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181305 to 33875. [2020-04-18 11:34:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33875 states. [2020-04-18 11:34:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33875 states to 33875 states and 181202 transitions. [2020-04-18 11:34:07,269 INFO L78 Accepts]: Start accepts. Automaton has 33875 states and 181202 transitions. Word has length 25 [2020-04-18 11:34:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:07,270 INFO L479 AbstractCegarLoop]: Abstraction has 33875 states and 181202 transitions. [2020-04-18 11:34:07,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 11:34:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 33875 states and 181202 transitions. [2020-04-18 11:34:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:07,272 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:07,272 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:09,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:09,279 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:09,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-04-18 11:34:09,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:09,280 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [858331580] [2020-04-18 11:34:09,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,285 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 609 transitions. [2020-04-18 11:34:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-04-18 11:34:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:09,287 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash -290393454, now seen corresponding path program 2 times [2020-04-18 11:34:09,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616641265] [2020-04-18 11:34:09,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:09,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616641265] [2020-04-18 11:34:09,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:09,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:09,296 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:09,297 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,310 INFO L259 McrAutomatonBuilder]: Finished intersection with 129 states and 275 transitions. [2020-04-18 11:34:09,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:09,313 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:09,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:09,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:09,314 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 3 states. [2020-04-18 11:34:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:09,324 INFO L93 Difference]: Finished difference Result 295 states and 715 transitions. [2020-04-18 11:34:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 715 transitions. [2020-04-18 11:34:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:09,325 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1948435474, now seen corresponding path program 3 times [2020-04-18 11:34:09,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480189091] [2020-04-18 11:34:09,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:09,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480189091] [2020-04-18 11:34:09,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:09,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:34:09,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:09,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 181 transitions. [2020-04-18 11:34:09,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:09,378 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 11:34:09,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:09,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:34:09,379 INFO L87 Difference]: Start difference. First operand 295 states and 715 transitions. Second operand 5 states. [2020-04-18 11:34:09,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:09,431 INFO L93 Difference]: Finished difference Result 386 states and 864 transitions. [2020-04-18 11:34:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 864 transitions. [2020-04-18 11:34:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:09,432 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,433 INFO L82 PathProgramCache]: Analyzing trace with hash -506161338, now seen corresponding path program 4 times [2020-04-18 11:34:09,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436070334] [2020-04-18 11:34:09,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:09,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436070334] [2020-04-18 11:34:09,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173694628] [2020-04-18 11:34:09,470 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:09,556 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:09,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:09,557 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:09,558 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:09,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:09,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:34:09,571 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:09,572 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,584 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 145 transitions. [2020-04-18 11:34:09,584 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:09,632 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:34:09,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:34:09,633 INFO L87 Difference]: Start difference. First operand 386 states and 864 transitions. Second operand 11 states. [2020-04-18 11:34:09,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:09,882 INFO L93 Difference]: Finished difference Result 428 states and 916 transitions. [2020-04-18 11:34:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 916 transitions. [2020-04-18 11:34:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:09,883 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,883 INFO L82 PathProgramCache]: Analyzing trace with hash -506162388, now seen corresponding path program 5 times [2020-04-18 11:34:09,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652822245] [2020-04-18 11:34:09,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:09,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652822245] [2020-04-18 11:34:09,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621345817] [2020-04-18 11:34:09,903 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:09,993 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:09,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:09,994 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:09,995 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:10,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:10,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:34:10,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:10,009 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:10,020 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 162 transitions. [2020-04-18 11:34:10,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:10,164 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 11:34:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:34:10,165 INFO L87 Difference]: Start difference. First operand 428 states and 916 transitions. Second operand 13 states. [2020-04-18 11:34:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:10,388 INFO L93 Difference]: Finished difference Result 554 states and 1080 transitions. [2020-04-18 11:34:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1080 transitions. [2020-04-18 11:34:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:10,390 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:34:10,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:10,390 INFO L82 PathProgramCache]: Analyzing trace with hash -505509528, now seen corresponding path program 6 times [2020-04-18 11:34:10,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:10,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835010103] [2020-04-18 11:34:10,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:10,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835010103] [2020-04-18 11:34:10,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433173346] [2020-04-18 11:34:10,439 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:10,579 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:34:10,579 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:10,580 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:10,581 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:10,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:10,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:10,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:10,600 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:10,617 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 145 transitions. [2020-04-18 11:34:10,617 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:10,635 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 11:34:10,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:34:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:34:10,636 INFO L87 Difference]: Start difference. First operand 554 states and 1080 transitions. Second operand 12 states. [2020-04-18 11:34:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:10,922 INFO L93 Difference]: Finished difference Result 600 states and 1129 transitions. [2020-04-18 11:34:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1129 transitions. [2020-04-18 11:34:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:10,923 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:34:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1103954630, now seen corresponding path program 7 times [2020-04-18 11:34:10,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:10,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101765204] [2020-04-18 11:34:10,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:10,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101765204] [2020-04-18 11:34:10,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:10,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:34:10,978 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:10,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:10,988 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:34:10,989 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:11,019 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:34:11,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:34:11,019 INFO L87 Difference]: Start difference. First operand 600 states and 1129 transitions. Second operand 7 states. [2020-04-18 11:34:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:11,227 INFO L93 Difference]: Finished difference Result 619 states and 1143 transitions. [2020-04-18 11:34:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1143 transitions. [2020-04-18 11:34:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:11,228 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:34:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1103480210, now seen corresponding path program 8 times [2020-04-18 11:34:11,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:11,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836483811] [2020-04-18 11:34:11,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:11,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836483811] [2020-04-18 11:34:11,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242894935] [2020-04-18 11:34:11,258 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:11,354 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:34:11,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:11,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:11,357 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:11,693 WARN L192 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-04-18 11:34:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:11,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:11,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:11,695 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:11,697 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:11,704 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:34:11,704 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:11,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:34:11,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:11,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1464, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:34:11,705 INFO L87 Difference]: Start difference. First operand 619 states and 1143 transitions. Second operand 9 states. [2020-04-18 11:34:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:11,913 INFO L93 Difference]: Finished difference Result 630 states and 1149 transitions. [2020-04-18 11:34:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1149 transitions. [2020-04-18 11:34:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:11,915 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:34:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:11,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 9 times [2020-04-18 11:34:11,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:11,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689887253] [2020-04-18 11:34:11,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:11,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689887253] [2020-04-18 11:34:11,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202795246] [2020-04-18 11:34:11,956 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:12,046 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 11:34:12,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:12,047 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:12,048 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:12,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:12,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:12,065 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:12,066 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:12,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:34:12,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:12,143 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:12,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:34:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 11:34:12,144 INFO L87 Difference]: Start difference. First operand 630 states and 1149 transitions. Second operand 15 states. [2020-04-18 11:34:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:12,816 INFO L93 Difference]: Finished difference Result 630 states and 1149 transitions. [2020-04-18 11:34:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1149 transitions. [2020-04-18 11:34:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:12,818 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:34:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:12,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 10 times [2020-04-18 11:34:12,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:12,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694002705] [2020-04-18 11:34:12,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:12,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694002705] [2020-04-18 11:34:12,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036738333] [2020-04-18 11:34:12,856 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:12,948 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:12,948 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:12,949 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:12,949 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:12,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:12,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:12,963 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:12,963 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:12,972 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-04-18 11:34:12,972 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:13,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 11:34:13,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 11:34:13,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=4026, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 11:34:13,197 INFO L87 Difference]: Start difference. First operand 630 states and 1149 transitions. Second operand 21 states. [2020-04-18 11:34:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:14,102 INFO L93 Difference]: Finished difference Result 630 states and 1149 transitions. [2020-04-18 11:34:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1149 transitions. [2020-04-18 11:34:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:14,103 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:34:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash -601001104, now seen corresponding path program 11 times [2020-04-18 11:34:14,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:14,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744787871] [2020-04-18 11:34:14,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:14,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744787871] [2020-04-18 11:34:14,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096879557] [2020-04-18 11:34:14,134 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:14,225 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:14,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:14,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:14,227 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:14,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:14,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:14,239 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:14,240 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:14,249 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 78 transitions. [2020-04-18 11:34:14,249 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:14,268 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:34:14,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1322, Invalid=5988, Unknown=0, NotChecked=0, Total=7310 [2020-04-18 11:34:14,269 INFO L87 Difference]: Start difference. First operand 630 states and 1149 transitions. Second operand 11 states. [2020-04-18 11:34:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:14,560 INFO L93 Difference]: Finished difference Result 645 states and 1160 transitions. [2020-04-18 11:34:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1160 transitions. [2020-04-18 11:34:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:14,561 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:34:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash -600348244, now seen corresponding path program 12 times [2020-04-18 11:34:14,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:14,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159641536] [2020-04-18 11:34:14,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:14,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159641536] [2020-04-18 11:34:14,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444734801] [2020-04-18 11:34:14,604 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:14,697 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:34:14,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:14,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:14,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:14,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:14,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:14,714 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:14,715 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:14,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:34:14,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:14,746 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 11:34:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:34:14,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1467, Invalid=6905, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 11:34:14,748 INFO L87 Difference]: Start difference. First operand 645 states and 1160 transitions. Second operand 16 states. [2020-04-18 11:34:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:15,448 INFO L93 Difference]: Finished difference Result 645 states and 1160 transitions. [2020-04-18 11:34:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1160 transitions. [2020-04-18 11:34:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:15,450 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:34:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash 667735448, now seen corresponding path program 13 times [2020-04-18 11:34:15,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:15,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676843157] [2020-04-18 11:34:15,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:15,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676843157] [2020-04-18 11:34:15,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878981503] [2020-04-18 11:34:15,526 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:15,625 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:15,626 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:15,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:15,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:15,641 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:15,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:15,648 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:34:15,649 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:15,667 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:15,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1867, Invalid=9053, Unknown=0, NotChecked=0, Total=10920 [2020-04-18 11:34:15,668 INFO L87 Difference]: Start difference. First operand 645 states and 1160 transitions. Second operand 13 states. [2020-04-18 11:34:16,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:16,289 INFO L93 Difference]: Finished difference Result 652 states and 1164 transitions. [2020-04-18 11:34:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1164 transitions. [2020-04-18 11:34:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:16,290 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:34:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 14 times [2020-04-18 11:34:16,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:16,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529345012] [2020-04-18 11:34:16,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:16,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529345012] [2020-04-18 11:34:16,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:16,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:16,337 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:16,337 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:16,341 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:16,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:16,342 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:16,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2306, Invalid=11736, Unknown=0, NotChecked=0, Total=14042 [2020-04-18 11:34:16,343 INFO L87 Difference]: Start difference. First operand 652 states and 1164 transitions. Second operand 9 states. [2020-04-18 11:34:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:16,844 INFO L93 Difference]: Finished difference Result 652 states and 1164 transitions. [2020-04-18 11:34:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1164 transitions. [2020-04-18 11:34:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:16,846 INFO L105 Mcr]: ---- MCR iteration 13 ---- [2020-04-18 11:34:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash -958277096, now seen corresponding path program 15 times [2020-04-18 11:34:16,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:16,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036352646] [2020-04-18 11:34:16,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:16,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036352646] [2020-04-18 11:34:16,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:16,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:16,890 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:16,891 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:16,894 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:16,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:16,895 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:16,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:16,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2763, Invalid=15059, Unknown=0, NotChecked=0, Total=17822 [2020-04-18 11:34:16,897 INFO L87 Difference]: Start difference. First operand 652 states and 1164 transitions. Second operand 9 states. [2020-04-18 11:34:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:17,346 INFO L93 Difference]: Finished difference Result 652 states and 1164 transitions. [2020-04-18 11:34:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1164 transitions. [2020-04-18 11:34:17,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:17,349 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [858331580] [2020-04-18 11:34:17,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:17,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:34:17,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [858331580] [2020-04-18 11:34:17,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-18 11:34:17,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:17,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-18 11:34:17,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3179, Invalid=17991, Unknown=0, NotChecked=0, Total=21170 [2020-04-18 11:34:17,352 INFO L87 Difference]: Start difference. First operand 33875 states and 181202 transitions. Second operand 33 states. [2020-04-18 11:34:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:23,429 INFO L93 Difference]: Finished difference Result 183572 states and 774369 transitions. [2020-04-18 11:34:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2020-04-18 11:34:23,430 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2020-04-18 11:34:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:23,995 INFO L225 Difference]: With dead ends: 183572 [2020-04-18 11:34:23,995 INFO L226 Difference]: Without dead ends: 182550 [2020-04-18 11:34:23,998 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 774 SyntacticMatches, 10 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30771 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10600, Invalid=64202, Unknown=0, NotChecked=0, Total=74802 [2020-04-18 11:34:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182550 states. [2020-04-18 11:34:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182550 to 30165. [2020-04-18 11:34:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30165 states. [2020-04-18 11:34:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30165 states to 30165 states and 162363 transitions. [2020-04-18 11:34:28,155 INFO L78 Accepts]: Start accepts. Automaton has 30165 states and 162363 transitions. Word has length 25 [2020-04-18 11:34:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:28,155 INFO L479 AbstractCegarLoop]: Abstraction has 30165 states and 162363 transitions. [2020-04-18 11:34:28,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-18 11:34:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 30165 states and 162363 transitions. [2020-04-18 11:34:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:28,157 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:28,157 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:29,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:29,960 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:29,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:29,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-04-18 11:34:29,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:29,962 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [130442369] [2020-04-18 11:34:29,963 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:29,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 417 transitions. [2020-04-18 11:34:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-04-18 11:34:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:29,967 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:29,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:29,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1256748813, now seen corresponding path program 2 times [2020-04-18 11:34:29,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:29,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99846903] [2020-04-18 11:34:29,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:29,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99846903] [2020-04-18 11:34:29,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:29,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:29,976 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:29,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:29,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 103 transitions. [2020-04-18 11:34:29,984 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:29,987 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:29,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:29,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:29,987 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-04-18 11:34:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:29,998 INFO L93 Difference]: Finished difference Result 211 states and 487 transitions. [2020-04-18 11:34:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 487 transitions. [2020-04-18 11:34:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:29,999 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash -558114339, now seen corresponding path program 3 times [2020-04-18 11:34:29,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:29,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695303084] [2020-04-18 11:34:30,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:30,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695303084] [2020-04-18 11:34:30,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884766456] [2020-04-18 11:34:30,018 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:30,107 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:34:30,108 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:30,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:30,109 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:30,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:30,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:34:30,594 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:30,595 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:30,602 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 79 transitions. [2020-04-18 11:34:30,602 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:30,615 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:34:30,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:30,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:30,616 INFO L87 Difference]: Start difference. First operand 211 states and 487 transitions. Second operand 7 states. [2020-04-18 11:34:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:30,693 INFO L93 Difference]: Finished difference Result 274 states and 588 transitions. [2020-04-18 11:34:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 588 transitions. [2020-04-18 11:34:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:30,694 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:30,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:30,694 INFO L82 PathProgramCache]: Analyzing trace with hash -306385085, now seen corresponding path program 4 times [2020-04-18 11:34:30,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:30,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611699581] [2020-04-18 11:34:30,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:30,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611699581] [2020-04-18 11:34:30,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434514160] [2020-04-18 11:34:30,723 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:30,816 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:30,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:30,817 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:30,817 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:30,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:30,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:34:30,828 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:30,829 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:30,835 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 67 transitions. [2020-04-18 11:34:30,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:30,849 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:34:30,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:30,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:34:30,850 INFO L87 Difference]: Start difference. First operand 274 states and 588 transitions. Second operand 9 states. [2020-04-18 11:34:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:31,064 INFO L93 Difference]: Finished difference Result 320 states and 644 transitions. [2020-04-18 11:34:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 644 transitions. [2020-04-18 11:34:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:31,065 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:31,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:31,066 INFO L82 PathProgramCache]: Analyzing trace with hash -398407445, now seen corresponding path program 5 times [2020-04-18 11:34:31,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:31,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552741484] [2020-04-18 11:34:31,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:31,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552741484] [2020-04-18 11:34:31,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794465767] [2020-04-18 11:34:31,106 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:31,203 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:31,203 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:31,205 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:31,205 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:31,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:31,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:31,224 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:31,225 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:31,233 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:34:31,233 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:31,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:34:31,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:31,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:34:31,261 INFO L87 Difference]: Start difference. First operand 320 states and 644 transitions. Second operand 11 states. [2020-04-18 11:34:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:31,703 INFO L93 Difference]: Finished difference Result 337 states and 655 transitions. [2020-04-18 11:34:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 655 transitions. [2020-04-18 11:34:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:31,704 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:34:31,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:31,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 6 times [2020-04-18 11:34:31,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:31,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156269324] [2020-04-18 11:34:31,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:31,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156269324] [2020-04-18 11:34:31,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442846425] [2020-04-18 11:34:31,745 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:31,836 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:34:31,836 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:31,837 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:31,838 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:31,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:31,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:31,858 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:31,859 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:31,864 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:34:31,864 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:31,890 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:34:31,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:31,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:34:31,891 INFO L87 Difference]: Start difference. First operand 337 states and 655 transitions. Second operand 11 states. [2020-04-18 11:34:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:32,406 INFO L93 Difference]: Finished difference Result 366 states and 689 transitions. [2020-04-18 11:34:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 689 transitions. [2020-04-18 11:34:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:32,407 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:34:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1664960285, now seen corresponding path program 7 times [2020-04-18 11:34:32,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:32,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301904106] [2020-04-18 11:34:32,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:32,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301904106] [2020-04-18 11:34:32,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:32,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:34:32,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:32,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:32,445 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 83 transitions. [2020-04-18 11:34:32,446 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:32,538 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 11:34:32,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:32,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=2838, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:34:32,539 INFO L87 Difference]: Start difference. First operand 366 states and 689 transitions. Second operand 11 states. [2020-04-18 11:34:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:32,845 INFO L93 Difference]: Finished difference Result 411 states and 747 transitions. [2020-04-18 11:34:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 747 transitions. [2020-04-18 11:34:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:32,846 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:34:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:32,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1756982645, now seen corresponding path program 8 times [2020-04-18 11:34:32,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:32,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435584709] [2020-04-18 11:34:32,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:32,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435584709] [2020-04-18 11:34:32,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72567624] [2020-04-18 11:34:32,911 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:33,004 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:34:33,005 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:33,006 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:33,007 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:33,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:33,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:33,023 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:33,023 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:33,030 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:34:33,030 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:33,087 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 11:34:33,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:34:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=878, Invalid=4092, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 11:34:33,088 INFO L87 Difference]: Start difference. First operand 411 states and 747 transitions. Second operand 15 states. [2020-04-18 11:34:33,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:33,730 INFO L93 Difference]: Finished difference Result 414 states and 748 transitions. [2020-04-18 11:34:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 748 transitions. [2020-04-18 11:34:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:33,731 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:34:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash 667736843, now seen corresponding path program 9 times [2020-04-18 11:34:33,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:33,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850833770] [2020-04-18 11:34:33,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:33,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850833770] [2020-04-18 11:34:33,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713386947] [2020-04-18 11:34:33,799 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:33,889 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:34:33,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:33,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:33,891 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:33,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:33,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:33,905 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:33,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:33,912 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:34:33,912 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:33,928 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=5745, Unknown=0, NotChecked=0, Total=6972 [2020-04-18 11:34:33,930 INFO L87 Difference]: Start difference. First operand 414 states and 748 transitions. Second operand 13 states. [2020-04-18 11:34:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:34,564 INFO L93 Difference]: Finished difference Result 449 states and 785 transitions. [2020-04-18 11:34:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 785 transitions. [2020-04-18 11:34:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:34,565 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:34:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash -979464821, now seen corresponding path program 10 times [2020-04-18 11:34:34,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:34,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509379105] [2020-04-18 11:34:34,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:34,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509379105] [2020-04-18 11:34:34,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:34,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:34,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:34,607 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:34,610 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:34,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:34,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1722, Invalid=8580, Unknown=0, NotChecked=0, Total=10302 [2020-04-18 11:34:34,631 INFO L87 Difference]: Start difference. First operand 449 states and 785 transitions. Second operand 9 states. [2020-04-18 11:34:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:35,127 INFO L93 Difference]: Finished difference Result 449 states and 785 transitions. [2020-04-18 11:34:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 785 transitions. [2020-04-18 11:34:35,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:35,128 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:34:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:35,129 INFO L82 PathProgramCache]: Analyzing trace with hash -958275701, now seen corresponding path program 11 times [2020-04-18 11:34:35,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:35,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478318163] [2020-04-18 11:34:35,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:35,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478318163] [2020-04-18 11:34:35,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:35,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:35,170 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:35,172 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:35,175 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:35,176 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:35,176 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:35,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2154, Invalid=11888, Unknown=0, NotChecked=0, Total=14042 [2020-04-18 11:34:35,177 INFO L87 Difference]: Start difference. First operand 449 states and 785 transitions. Second operand 9 states. [2020-04-18 11:34:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:35,672 INFO L93 Difference]: Finished difference Result 449 states and 785 transitions. [2020-04-18 11:34:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 785 transitions. [2020-04-18 11:34:35,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:35,674 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [130442369] [2020-04-18 11:34:35,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:35,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:34:35,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [130442369] [2020-04-18 11:34:35,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:34:35,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:34:35,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2597, Invalid=15225, Unknown=0, NotChecked=0, Total=17822 [2020-04-18 11:34:35,676 INFO L87 Difference]: Start difference. First operand 30165 states and 162363 transitions. Second operand 24 states. [2020-04-18 11:34:38,370 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-04-18 11:34:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:41,964 INFO L93 Difference]: Finished difference Result 197911 states and 812328 transitions. [2020-04-18 11:34:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2020-04-18 11:34:41,964 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-04-18 11:34:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:42,524 INFO L225 Difference]: With dead ends: 197911 [2020-04-18 11:34:42,524 INFO L226 Difference]: Without dead ends: 197474 [2020-04-18 11:34:42,527 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34322 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=9967, Invalid=69839, Unknown=0, NotChecked=0, Total=79806 [2020-04-18 11:34:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197474 states. [2020-04-18 11:34:47,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197474 to 29338. [2020-04-18 11:34:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29338 states. [2020-04-18 11:34:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29338 states to 29338 states and 157263 transitions. [2020-04-18 11:34:47,466 INFO L78 Accepts]: Start accepts. Automaton has 29338 states and 157263 transitions. Word has length 25 [2020-04-18 11:34:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:47,466 INFO L479 AbstractCegarLoop]: Abstraction has 29338 states and 157263 transitions. [2020-04-18 11:34:47,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:34:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 29338 states and 157263 transitions. [2020-04-18 11:34:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:47,469 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:47,469 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:48,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:48,671 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 1 times [2020-04-18 11:34:48,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:48,673 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [410166368] [2020-04-18 11:34:48,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:48,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 69 transitions. [2020-04-18 11:34:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-04-18 11:34:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:48,676 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 86770305, now seen corresponding path program 2 times [2020-04-18 11:34:48,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:48,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847210467] [2020-04-18 11:34:48,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:34:48,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847210467] [2020-04-18 11:34:48,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:48,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:48,684 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:48,685 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:48,689 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 67 transitions. [2020-04-18 11:34:48,689 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:48,692 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:48,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:48,692 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-04-18 11:34:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:48,695 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:34:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:34:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:48,695 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 3 times [2020-04-18 11:34:48,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:48,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156507299] [2020-04-18 11:34:48,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:34:48,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156507299] [2020-04-18 11:34:48,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:48,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:34:48,717 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:48,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:48,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:48,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:48,729 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:48,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:48,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:34:48,730 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand 5 states. [2020-04-18 11:34:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:48,745 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:34:48,745 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:34:48,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:48,746 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [410166368] [2020-04-18 11:34:48,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:48,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:34:48,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [410166368] [2020-04-18 11:34:48,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:34:48,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:48,747 INFO L87 Difference]: Start difference. First operand 29338 states and 157263 transitions. Second operand 5 states. [2020-04-18 11:34:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:49,240 INFO L93 Difference]: Finished difference Result 52267 states and 269053 transitions. [2020-04-18 11:34:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:34:49,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-18 11:34:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:49,492 INFO L225 Difference]: With dead ends: 52267 [2020-04-18 11:34:49,492 INFO L226 Difference]: Without dead ends: 52173 [2020-04-18 11:34:49,492 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52173 states. [2020-04-18 11:34:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52173 to 36868. [2020-04-18 11:34:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36868 states. Received shutdown request... [2020-04-18 11:34:51,609 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 11:34:51,613 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 11:34:51,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:34:51 BasicIcfg [2020-04-18 11:34:51,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:34:51,614 INFO L168 Benchmark]: Toolchain (without parser) took 236629.23 ms. Allocated memory was 145.2 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 102.0 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,615 INFO L168 Benchmark]: CDTParser took 0.23 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: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.93 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.0 MB in the beginning and 161.7 MB in the end (delta: -61.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.15 ms. Allocated memory is still 202.9 MB. Free memory was 161.7 MB in the beginning and 159.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,615 INFO L168 Benchmark]: Boogie Preprocessor took 27.02 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,615 INFO L168 Benchmark]: RCFGBuilder took 433.04 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 138.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,616 INFO L168 Benchmark]: TraceAbstraction took 235322.47 ms. Allocated memory was 202.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 138.3 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2020-04-18 11:34:51,617 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 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.93 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.0 MB in the beginning and 161.7 MB in the end (delta: -61.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.15 ms. Allocated memory is still 202.9 MB. Free memory was 161.7 MB in the beginning and 159.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.02 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 158.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.04 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 138.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235322.47 ms. Allocated memory was 202.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 138.3 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 55 ProgramPointsBefore, 18 ProgramPointsAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 389 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 576 CheckedPairsTotal, 45 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 577 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 964 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 781 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1796 CheckedPairsTotal, 73 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 1100 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2240 CheckedPairsTotal, 92 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 139 ProgramPointsBefore, 61 ProgramPointsAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 1387 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3096 CheckedPairsTotal, 115 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 160 ProgramPointsBefore, 71 ProgramPointsAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 1785 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 4226 CheckedPairsTotal, 127 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while ReachableStatesComputation was computing reachable states (6978 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 234.8s, OverallIterations: 56, TraceHistogramMax: 6, AutomataDifference: 67.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.8s, HoareTripleCheckerStatistics: 2562 SDtfs, 22822 SDslu, 15535 SDs, 0 SdLazy, 21100 SolverSat, 2164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10509 GetRequests, 7498 SyntacticMatches, 30 SemanticMatches, 2981 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270669 ImplicationChecksByTransitivity, 47.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 61.1s AutomataMinimizationTime, 51 MinimizatonAttempts, 1300289 StatesRemovedByMinimization, 43 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 could not prove your program: Timeout Completed graceful shutdown