/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-wmm/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:02,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:02,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:02,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:02,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:02,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:02,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:02,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:02,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:02,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:02,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:02,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:02,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:02,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:02,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:02,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:02,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:02,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:02,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:02,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:02,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:02,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:02,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:02,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:02,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:02,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:02,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:02,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:02,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:02,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:02,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:02,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:02,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:02,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:02,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:02,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:02,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:02,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:02,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:02,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:02,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:02,796 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 11:27:02,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:02,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:02,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:02,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:02,813 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:02,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:02,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:02,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:02,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:02,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:02,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:02,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:02,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:02,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:02,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:02,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:02,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:02,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:02,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:02,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:02,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:02,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:02,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:02,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:02,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:02,817 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:02,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:02,818 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:02,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:02,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:03,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:03,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:03,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:03,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:03,124 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:03,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 11:27:03,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a482f79/fb0ab5d50a5a454ba1a09269800536c0/FLAG4be3eddc8 [2020-04-18 11:27:03,709 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:03,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 11:27:03,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a482f79/fb0ab5d50a5a454ba1a09269800536c0/FLAG4be3eddc8 [2020-04-18 11:27:03,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92a482f79/fb0ab5d50a5a454ba1a09269800536c0 [2020-04-18 11:27:04,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:04,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:04,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:04,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:04,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:04,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:03" (1/1) ... [2020-04-18 11:27:04,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6abf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04, skipping insertion in model container [2020-04-18 11:27:04,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:03" (1/1) ... [2020-04-18 11:27:04,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:04,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:04,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:04,696 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:04,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:04,845 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:04,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04 WrapperNode [2020-04-18 11:27:04,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:04,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:04,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:04,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:04,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:04,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:04,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:04,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:04,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (1/1) ... [2020-04-18 11:27:04,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:04,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:04,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:04,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:04,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (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 11:27:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:05,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:05,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:27:05,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:27:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:05,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:05,033 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 11:27:05,438 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:05,438 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:05,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:05 BoogieIcfgContainer [2020-04-18 11:27:05,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:05,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:05,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:05,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:05,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:03" (1/3) ... [2020-04-18 11:27:05,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf8ad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:05, skipping insertion in model container [2020-04-18 11:27:05,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:04" (2/3) ... [2020-04-18 11:27:05,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf8ad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:05, skipping insertion in model container [2020-04-18 11:27:05,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:05" (3/3) ... [2020-04-18 11:27:05,456 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-04-18 11:27:05,466 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:05,467 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:05,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:05,476 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:05,503 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,503 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,504 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,504 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,504 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,505 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,505 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,506 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,506 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,506 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,506 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,507 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,508 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,508 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,508 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,508 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,509 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,509 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,513 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,514 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,514 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,514 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,521 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,521 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,522 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,527 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,527 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,527 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,528 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:05,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:27:05,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:05,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:05,564 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:05,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:05,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:05,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:05,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:05,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:05,581 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 11:27:05,583 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:27:05,626 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:27:05,627 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:05,632 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:05,635 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:27:05,656 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:27:05,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:05,657 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:05,659 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:27:05,660 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:07,463 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-18 11:27:07,641 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-18 11:27:07,641 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 11:27:07,646 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 11:27:07,672 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:27:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:27:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:07,683 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:07,684 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:07,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-18 11:27:07,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:07,700 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1280008427] [2020-04-18 11:27:07,717 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:07,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:27:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:07,735 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:07,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 2 times [2020-04-18 11:27:07,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:07,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059860927] [2020-04-18 11:27:07,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,000 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 11:27:08,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059860927] [2020-04-18 11:27:08,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:27:08,003 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,004 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,006 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:08,007 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,016 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:08,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:08,023 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:27:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,027 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:27:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:27:08,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:08,028 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1280008427] [2020-04-18 11:27:08,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:08,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:27:08,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1280008427] [2020-04-18 11:27:08,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:27:08,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:08,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:08,036 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:27:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,105 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-18 11:27:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:27:08,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:27:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:08,140 INFO L225 Difference]: With dead ends: 294 [2020-04-18 11:27:08,143 INFO L226 Difference]: Without dead ends: 230 [2020-04-18 11:27:08,145 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 11:27:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-18 11:27:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-18 11:27:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-18 11:27:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-18 11:27:08,228 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-18 11:27:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:08,230 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-18 11:27:08,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:27:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-18 11:27:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:08,231 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:08,231 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:08,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,232 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-18 11:27:08,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:08,233 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [542630048] [2020-04-18 11:27:08,233 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,234 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:27:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:27:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:08,235 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,235 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 2 times [2020-04-18 11:27:08,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:08,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792657197] [2020-04-18 11:27:08,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,307 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 11:27:08,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792657197] [2020-04-18 11:27:08,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:27:08,308 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,309 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,311 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:27:08,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,317 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:08,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:08,318 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:27:08,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,319 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 11:27:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 11:27:08,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:08,320 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [542630048] [2020-04-18 11:27:08,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:08,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:27:08,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [542630048] [2020-04-18 11:27:08,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:27:08,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:08,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:08,323 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-18 11:27:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,333 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 11:27:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:27:08,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:27:08,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:08,340 INFO L225 Difference]: With dead ends: 202 [2020-04-18 11:27:08,340 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 11:27:08,343 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 11:27:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 11:27:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 11:27:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 11:27:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 11:27:08,365 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 11:27:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:08,366 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 11:27:08,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:27:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 11:27:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:27:08,367 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:08,367 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:08,368 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,368 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-18 11:27:08,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:08,369 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1385273788] [2020-04-18 11:27:08,369 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 11:27:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 11:27:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:27:08,371 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:08,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,371 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 2 times [2020-04-18 11:27:08,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:08,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899232100] [2020-04-18 11:27:08,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,424 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 11:27:08,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899232100] [2020-04-18 11:27:08,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:08,426 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,426 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,428 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 11:27:08,428 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:08,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:08,432 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 11:27:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,440 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 11:27:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 11:27:08,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:27:08,441 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,441 INFO L82 PathProgramCache]: Analyzing trace with hash -53993097, now seen corresponding path program 3 times [2020-04-18 11:27:08,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:08,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666712159] [2020-04-18 11:27:08,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,511 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 11:27:08,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666712159] [2020-04-18 11:27:08,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:08,515 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,517 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:27:08,517 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,534 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:08,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:08,535 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-04-18 11:27:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,545 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 11:27:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 11:27:08,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:08,546 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1385273788] [2020-04-18 11:27:08,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:08,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:08,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1385273788] [2020-04-18 11:27:08,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:08,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:08,548 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 11:27:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,586 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-18 11:27:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:27:08,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 11:27:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:08,589 INFO L225 Difference]: With dead ends: 266 [2020-04-18 11:27:08,589 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 11:27:08,589 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 11:27:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 11:27:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 11:27:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-18 11:27:08,601 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-18 11:27:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:08,601 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-18 11:27:08,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-18 11:27:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:27:08,602 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:08,603 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:08,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-18 11:27:08,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:08,604 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1412051337] [2020-04-18 11:27:08,604 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:27:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:27:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:27:08,606 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1335752706, now seen corresponding path program 2 times [2020-04-18 11:27:08,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:08,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508362059] [2020-04-18 11:27:08,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,665 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 11:27:08,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508362059] [2020-04-18 11:27:08,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:08,666 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:27:08,670 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,687 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:08,689 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:27:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,699 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2020-04-18 11:27:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-04-18 11:27:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:27:08,700 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1336319106, now seen corresponding path program 3 times [2020-04-18 11:27:08,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:08,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741260979] [2020-04-18 11:27:08,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,758 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 11:27:08,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741260979] [2020-04-18 11:27:08,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:08,761 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,763 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,784 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 11:27:08,785 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,791 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:08,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:08,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:08,792 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand 3 states. [2020-04-18 11:27:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,795 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 11:27:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 11:27:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:27:08,796 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 4 times [2020-04-18 11:27:08,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:08,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073052090] [2020-04-18 11:27:08,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:08,881 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 11:27:08,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073052090] [2020-04-18 11:27:08,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:08,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:08,882 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:08,883 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:08,886 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:27:08,887 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:08,900 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:27:08,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:08,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:08,901 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 4 states. [2020-04-18 11:27:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:08,913 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 11:27:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 11:27:08,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:08,916 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1412051337] [2020-04-18 11:27:08,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:08,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:08,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1412051337] [2020-04-18 11:27:08,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:27:08,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:08,918 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 6 states. [2020-04-18 11:27:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,154 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-18 11:27:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 11:27:09,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 11:27:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:09,156 INFO L225 Difference]: With dead ends: 165 [2020-04-18 11:27:09,156 INFO L226 Difference]: Without dead ends: 113 [2020-04-18 11:27:09,157 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:27:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-18 11:27:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-18 11:27:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-18 11:27:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-18 11:27:09,176 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-18 11:27:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:09,176 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-18 11:27:09,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:27:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-18 11:27:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:09,180 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:09,180 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:09,181 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,181 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-18 11:27:09,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:09,182 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2050807727] [2020-04-18 11:27:09,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,183 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 11:27:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:27:09,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:09,188 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1541327102, now seen corresponding path program 2 times [2020-04-18 11:27:09,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:09,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162260507] [2020-04-18 11:27:09,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:09,259 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 11:27:09,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162260507] [2020-04-18 11:27:09,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:09,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:09,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:09,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,265 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 11:27:09,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:09,270 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:09,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:09,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:09,272 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-04-18 11:27:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,280 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2020-04-18 11:27:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-04-18 11:27:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:09,281 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1523780462, now seen corresponding path program 3 times [2020-04-18 11:27:09,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:09,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884278150] [2020-04-18 11:27:09,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:09,327 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 11:27:09,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884278150] [2020-04-18 11:27:09,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:09,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:09,329 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:09,331 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,333 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:27:09,333 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:09,339 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:09,340 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-04-18 11:27:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,343 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 11:27:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 11:27:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:09,344 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,344 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 4 times [2020-04-18 11:27:09,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:09,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282430946] [2020-04-18 11:27:09,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:09,430 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 11:27:09,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282430946] [2020-04-18 11:27:09,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:09,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:09,431 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:09,432 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:27:09,436 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:09,456 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:09,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:09,456 INFO L87 Difference]: Start difference. First operand 55 states and 84 transitions. Second operand 5 states. [2020-04-18 11:27:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,484 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 11:27:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 11:27:09,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:09,485 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2050807727] [2020-04-18 11:27:09,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:09,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:09,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2050807727] [2020-04-18 11:27:09,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:27:09,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:09,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:27:09,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:27:09,487 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 7 states. [2020-04-18 11:27:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,711 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-18 11:27:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 11:27:09,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 11:27:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:09,713 INFO L225 Difference]: With dead ends: 111 [2020-04-18 11:27:09,713 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 11:27:09,713 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:27:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 11:27:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 11:27:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 11:27:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-18 11:27:09,716 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-18 11:27:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:09,716 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-18 11:27:09,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:27:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-18 11:27:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:27:09,717 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:09,717 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:09,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:09,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-18 11:27:09,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:09,718 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1420555786] [2020-04-18 11:27:09,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 134 transitions. [2020-04-18 11:27:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 11:27:09,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:27:09,721 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash -605969466, now seen corresponding path program 2 times [2020-04-18 11:27:09,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:09,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920824654] [2020-04-18 11:27:09,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:09,754 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 11:27:09,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920824654] [2020-04-18 11:27:09,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:09,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:09,755 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:09,756 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,760 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 11:27:09,760 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:09,765 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:09,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:09,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:09,766 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 11:27:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,773 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2020-04-18 11:27:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 205 transitions. [2020-04-18 11:27:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:27:09,774 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash -588422826, now seen corresponding path program 3 times [2020-04-18 11:27:09,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:09,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349626927] [2020-04-18 11:27:09,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:09,800 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 11:27:09,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349626927] [2020-04-18 11:27:09,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:09,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:09,801 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:09,802 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 11:27:09,806 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:09,811 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:09,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:09,811 INFO L87 Difference]: Start difference. First operand 105 states and 205 transitions. Second operand 3 states. [2020-04-18 11:27:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,815 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 11:27:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 11:27:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:27:09,816 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:09,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 4 times [2020-04-18 11:27:09,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:09,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185601115] [2020-04-18 11:27:09,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:09,870 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 11:27:09,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185601115] [2020-04-18 11:27:09,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:09,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:09,872 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:09,873 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:09,876 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 11:27:09,877 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:09,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:27:09,903 INFO L87 Difference]: Start difference. First operand 119 states and 222 transitions. Second operand 6 states. [2020-04-18 11:27:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:09,977 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 11:27:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 11:27:09,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:09,978 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1420555786] [2020-04-18 11:27:09,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:09,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:09,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1420555786] [2020-04-18 11:27:09,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:27:09,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:27:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:27:09,980 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 8 states. [2020-04-18 11:27:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:10,169 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-18 11:27:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 11:27:10,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 11:27:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:10,171 INFO L225 Difference]: With dead ends: 75 [2020-04-18 11:27:10,171 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 11:27:10,172 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:27:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 11:27:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-18 11:27:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-18 11:27:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-18 11:27:10,179 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-18 11:27:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:10,179 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-18 11:27:10,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:27:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-18 11:27:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:27:10,180 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:10,180 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:10,180 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-18 11:27:10,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:10,181 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1314658621] [2020-04-18 11:27:10,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:10,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:27:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:27:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:27:10,192 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:10,192 INFO L82 PathProgramCache]: Analyzing trace with hash -689704600, now seen corresponding path program 2 times [2020-04-18 11:27:10,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:10,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394723770] [2020-04-18 11:27:10,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:10,218 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 11:27:10,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394723770] [2020-04-18 11:27:10,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:10,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:10,219 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:10,221 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:10,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 90 transitions. [2020-04-18 11:27:10,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:10,232 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:27:10,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:10,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:10,233 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 11:27:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:10,244 INFO L93 Difference]: Finished difference Result 390 states and 1057 transitions. [2020-04-18 11:27:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1057 transitions. [2020-04-18 11:27:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:27:10,246 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:10,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:10,246 INFO L82 PathProgramCache]: Analyzing trace with hash 595608656, now seen corresponding path program 3 times [2020-04-18 11:27:10,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:10,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512060526] [2020-04-18 11:27:10,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:10,272 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 11:27:10,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512060526] [2020-04-18 11:27:10,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:10,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:10,273 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:10,275 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:10,284 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 76 transitions. [2020-04-18 11:27:10,285 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:10,290 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:10,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:10,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:10,291 INFO L87 Difference]: Start difference. First operand 390 states and 1057 transitions. Second operand 3 states. [2020-04-18 11:27:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:10,298 INFO L93 Difference]: Finished difference Result 446 states and 1167 transitions. [2020-04-18 11:27:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1167 transitions. [2020-04-18 11:27:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:27:10,300 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -901910694, now seen corresponding path program 4 times [2020-04-18 11:27:10,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:10,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632497836] [2020-04-18 11:27:10,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:10,330 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 11:27:10,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632497836] [2020-04-18 11:27:10,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:10,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:10,331 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:10,333 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:10,343 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 63 transitions. [2020-04-18 11:27:10,343 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:10,362 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:27:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:10,362 INFO L87 Difference]: Start difference. First operand 446 states and 1167 transitions. Second operand 4 states. [2020-04-18 11:27:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:10,388 INFO L93 Difference]: Finished difference Result 638 states and 1577 transitions. [2020-04-18 11:27:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1577 transitions. [2020-04-18 11:27:10,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:27:10,391 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:10,391 INFO L82 PathProgramCache]: Analyzing trace with hash -901846014, now seen corresponding path program 5 times [2020-04-18 11:27:10,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:10,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758843053] [2020-04-18 11:27:10,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:10,461 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 11:27:10,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758843053] [2020-04-18 11:27:10,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:10,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:27:10,462 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:10,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:10,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 52 transitions. [2020-04-18 11:27:10,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:10,506 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:10,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:10,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:27:10,507 INFO L87 Difference]: Start difference. First operand 638 states and 1577 transitions. Second operand 6 states. [2020-04-18 11:27:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:10,602 INFO L93 Difference]: Finished difference Result 644 states and 1580 transitions. [2020-04-18 11:27:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1580 transitions. [2020-04-18 11:27:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:27:10,604 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:27:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 6 times [2020-04-18 11:27:10,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:10,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315748950] [2020-04-18 11:27:10,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:10,640 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 11:27:10,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315748950] [2020-04-18 11:27:10,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:10,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:10,641 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:10,644 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:10,652 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 11:27:10,652 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:10,740 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:27:10,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:10,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:27:10,741 INFO L87 Difference]: Start difference. First operand 644 states and 1580 transitions. Second operand 5 states. [2020-04-18 11:27:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:10,777 INFO L93 Difference]: Finished difference Result 1048 states and 2378 transitions. [2020-04-18 11:27:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 2378 transitions. [2020-04-18 11:27:10,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:10,781 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1314658621] [2020-04-18 11:27:10,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:10,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:10,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1314658621] [2020-04-18 11:27:10,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:27:10,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:27:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:27:10,784 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 13 states. [2020-04-18 11:27:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:11,689 INFO L93 Difference]: Finished difference Result 103 states and 198 transitions. [2020-04-18 11:27:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-18 11:27:11,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-04-18 11:27:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:11,691 INFO L225 Difference]: With dead ends: 103 [2020-04-18 11:27:11,691 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:11,693 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=655, Invalid=2767, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 11:27:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:11,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:27:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:11,694 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:11,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:27:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:11,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:11,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:11 BasicIcfg [2020-04-18 11:27:11,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:11,702 INFO L168 Benchmark]: Toolchain (without parser) took 7694.15 ms. Allocated memory was 134.7 MB in the beginning and 302.0 MB in the end (delta: 167.2 MB). Free memory was 98.5 MB in the beginning and 195.2 MB in the end (delta: -96.7 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,709 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.42 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 96.5 MB in the beginning and 153.7 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.68 ms. Allocated memory is still 199.2 MB. Free memory was 153.7 MB in the beginning and 151.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,713 INFO L168 Benchmark]: Boogie Preprocessor took 29.18 ms. Allocated memory is still 199.2 MB. Free memory was 151.5 MB in the beginning and 150.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,714 INFO L168 Benchmark]: RCFGBuilder took 483.42 ms. Allocated memory is still 199.2 MB. Free memory was 150.1 MB in the beginning and 127.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,714 INFO L168 Benchmark]: TraceAbstraction took 6253.45 ms. Allocated memory was 199.2 MB in the beginning and 302.0 MB in the end (delta: 102.8 MB). Free memory was 127.8 MB in the beginning and 195.2 MB in the end (delta: -67.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:11,719 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.42 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 96.5 MB in the beginning and 153.7 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 83.68 ms. Allocated memory is still 199.2 MB. Free memory was 153.7 MB in the beginning and 151.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.18 ms. Allocated memory is still 199.2 MB. Free memory was 151.5 MB in the beginning and 150.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.42 ms. Allocated memory is still 199.2 MB. Free memory was 150.1 MB in the beginning and 127.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6253.45 ms. Allocated memory was 199.2 MB in the beginning and 302.0 MB in the end (delta: 102.8 MB). Free memory was 127.8 MB in the beginning and 195.2 MB in the end (delta: -67.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 132 SDtfs, 233 SDslu, 298 SDs, 0 SdLazy, 495 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...