/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/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:10:57,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:10:57,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:10:57,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:10:57,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:10:57,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:10:57,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:10:57,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:10:57,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:10:57,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:10:57,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:10:57,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:10:57,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:10:57,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:10:57,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:10:57,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:10:57,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:10:57,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:10:57,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:10:57,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:10:57,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:10:57,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:10:57,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:10:57,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:10:57,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:10:57,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:10:57,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:10:57,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:10:57,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:10:57,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:10:57,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:10:57,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:10:57,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:10:57,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:10:57,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:10:57,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:10:57,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:10:57,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:10:57,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:10:57,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:10:57,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:10:57,908 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 11:10:57,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:10:57,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:10:57,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:10:57,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:10:57,941 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:10:57,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:10:57,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:10:57,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:10:57,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:10:57,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:10:57,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:10:57,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:10:57,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:10:57,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:10:57,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:10:57,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:10:57,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:10:57,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:10:57,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:10:57,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:10:57,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:10:57,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:10:57,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:10:57,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:10:57,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:10:57,946 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:10:57,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:10:57,946 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:10:57,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:10:57,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:10:58,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:10:58,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:10:58,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:10:58,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:10:58,236 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:10:58,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-04-18 11:10:58,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396c5a15e/4ca30589aabc4597a2a53fc0e38a6c56/FLAG564f820a0 [2020-04-18 11:10:58,829 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:10:58,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-04-18 11:10:58,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396c5a15e/4ca30589aabc4597a2a53fc0e38a6c56/FLAG564f820a0 [2020-04-18 11:10:59,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396c5a15e/4ca30589aabc4597a2a53fc0e38a6c56 [2020-04-18 11:10:59,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:10:59,160 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:10:59,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:10:59,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:10:59,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:10:59,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59, skipping insertion in model container [2020-04-18 11:10:59,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:10:59,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:10:59,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:10:59,722 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:10:59,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:10:59,913 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:10:59,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59 WrapperNode [2020-04-18 11:10:59,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:10:59,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:10:59,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:10:59,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:10:59,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:10:59,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:10:59,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:10:59,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:10:59,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:10:59,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (1/1) ... [2020-04-18 11:11:00,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:11:00,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:11:00,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:11:00,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:11:00,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (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 11:11:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:11:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:11:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:11:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:11:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:11:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:11:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:11:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:11:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:11:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:11:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:11:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:11:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:11:00,082 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 11:11:00,482 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:11:00,482 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:11:00,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:11:00 BoogieIcfgContainer [2020-04-18 11:11:00,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:11:00,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:11:00,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:11:00,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:11:00,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:10:59" (1/3) ... [2020-04-18 11:11:00,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbcd474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:11:00, skipping insertion in model container [2020-04-18 11:11:00,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:59" (2/3) ... [2020-04-18 11:11:00,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbcd474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:11:00, skipping insertion in model container [2020-04-18 11:11:00,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:11:00" (3/3) ... [2020-04-18 11:11:00,496 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-04-18 11:11:00,506 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:11:00,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:11:00,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:11:00,514 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:11:00,539 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,539 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,539 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,540 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,540 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,541 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,541 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,541 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,542 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,542 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,542 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,543 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,543 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,543 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,544 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,544 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,544 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,544 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,549 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,549 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,550 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,550 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,557 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,557 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,557 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,558 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,560 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,560 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,560 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,560 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:00,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:11:00,591 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:11:00,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:11:00,592 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:11:00,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:11:00,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:11:00,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:11:00,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:11:00,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:11:00,607 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 11:11:00,609 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:11:00,653 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:11:00,653 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:11:00,658 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 51 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 11:11:00,661 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:11:00,683 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:11:00,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:11:00,684 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 51 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 11:11:00,687 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:11:00,688 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:11:02,624 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 11:11:02,698 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 11:11:02,698 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 11:11:02,702 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 11:11:02,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:11:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:11:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:11:02,740 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:02,741 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:02,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 11:11:02,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:02,756 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [129478911] [2020-04-18 11:11:02,774 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:02,787 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:11:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:11:02,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:11:02,789 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:02,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 11:11:02,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:02,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024957364] [2020-04-18 11:11:02,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,039 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 11:11:03,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024957364] [2020-04-18 11:11:03,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:11:03,042 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,043 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:11:03,046 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:03,055 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:03,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:03,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:03,060 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:11:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,063 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:11:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:11:03,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:03,064 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [129478911] [2020-04-18 11:11:03,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:03,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:11:03,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [129478911] [2020-04-18 11:11:03,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:11:03,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:03,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:03,071 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:11:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,158 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 11:11:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:11:03,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:11:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:03,183 INFO L225 Difference]: With dead ends: 282 [2020-04-18 11:11:03,183 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 11:11:03,186 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 11:11:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 11:11:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 11:11:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 11:11:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 11:11:03,268 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 11:11:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:03,269 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 11:11:03,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:11:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 11:11:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:11:03,272 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:03,272 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:03,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-18 11:11:03,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:03,273 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [883663297] [2020-04-18 11:11:03,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 11:11:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:11:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:11:03,276 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,276 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 2 times [2020-04-18 11:11:03,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:03,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240401671] [2020-04-18 11:11:03,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,354 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 11:11:03,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240401671] [2020-04-18 11:11:03,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:03,355 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,356 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:11:03,357 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:03,398 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:11:03,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:11:03,399 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-04-18 11:11:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,415 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:11:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 11:11:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:11:03,416 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash -225370979, now seen corresponding path program 3 times [2020-04-18 11:11:03,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:03,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825719048] [2020-04-18 11:11:03,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,476 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 11:11:03,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825719048] [2020-04-18 11:11:03,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:03,478 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,478 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:11:03,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:03,489 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:03,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:03,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:03,490 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 11:11:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,495 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:11:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 11:11:03,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:03,496 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [883663297] [2020-04-18 11:11:03,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:03,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:11:03,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [883663297] [2020-04-18 11:11:03,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:11:03,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:11:03,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:03,499 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 5 states. [2020-04-18 11:11:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,541 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 11:11:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:11:03,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:11:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:03,544 INFO L225 Difference]: With dead ends: 202 [2020-04-18 11:11:03,544 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 11:11:03,545 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 11:11:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 11:11:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 11:11:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 11:11:03,562 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 11:11:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:03,562 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 11:11:03,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:11:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 11:11:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:11:03,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:03,564 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:03,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-04-18 11:11:03,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:03,565 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [662606734] [2020-04-18 11:11:03,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 11:11:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 11:11:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:11:03,568 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 2 times [2020-04-18 11:11:03,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:03,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691244157] [2020-04-18 11:11:03,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,653 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 11:11:03,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691244157] [2020-04-18 11:11:03,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:11:03,654 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,655 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,656 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 11:11:03,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:03,659 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:03,660 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 11:11:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,661 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-04-18 11:11:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-04-18 11:11:03,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:03,663 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [662606734] [2020-04-18 11:11:03,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:03,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:11:03,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [662606734] [2020-04-18 11:11:03,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:11:03,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:03,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:03,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:03,665 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 11:11:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,672 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-18 11:11:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:11:03,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:11:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:03,674 INFO L225 Difference]: With dead ends: 194 [2020-04-18 11:11:03,675 INFO L226 Difference]: Without dead ends: 194 [2020-04-18 11:11:03,675 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-18 11:11:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-18 11:11:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-18 11:11:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-18 11:11:03,688 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-18 11:11:03,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:03,689 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-18 11:11:03,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:11:03,689 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-18 11:11:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:11:03,691 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:03,691 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:03,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 11:11:03,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:03,692 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2050062692] [2020-04-18 11:11:03,692 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,693 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:11:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:11:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:11:03,694 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:03,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1834241260, now seen corresponding path program 2 times [2020-04-18 11:11:03,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:03,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245550825] [2020-04-18 11:11:03,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,731 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 11:11:03,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245550825] [2020-04-18 11:11:03,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:03,732 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,733 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,735 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:11:03,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:03,740 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:03,741 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:11:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,745 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:11:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:11:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:11:03,746 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 3 times [2020-04-18 11:11:03,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:03,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804403381] [2020-04-18 11:11:03,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,826 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 11:11:03,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804403381] [2020-04-18 11:11:03,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:03,830 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,832 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,834 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 11:11:03,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:03,850 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:03,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:03,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:03,850 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 11:11:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,863 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:11:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:11:03,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:03,864 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2050062692] [2020-04-18 11:11:03,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:03,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:11:03,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2050062692] [2020-04-18 11:11:03,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:11:03,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:03,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:11:03,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:11:03,865 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-04-18 11:11:03,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:03,942 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-04-18 11:11:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 11:11:03,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:11:03,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:03,945 INFO L225 Difference]: With dead ends: 225 [2020-04-18 11:11:03,945 INFO L226 Difference]: Without dead ends: 161 [2020-04-18 11:11:03,945 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:11:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-04-18 11:11:03,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-04-18 11:11:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-04-18 11:11:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-04-18 11:11:03,955 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-04-18 11:11:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:03,955 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-04-18 11:11:03,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:11:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-04-18 11:11:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:03,956 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:03,956 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:03,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:03,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-18 11:11:03,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:03,958 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1494407276] [2020-04-18 11:11:03,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,959 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 11:11:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 11:11:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:03,960 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1026920870, now seen corresponding path program 2 times [2020-04-18 11:11:03,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:03,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787572332] [2020-04-18 11:11:03,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:03,991 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 11:11:03,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787572332] [2020-04-18 11:11:03,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:03,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:03,992 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:03,994 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:03,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:11:03,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,001 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:04,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:04,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:04,001 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-04-18 11:11:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,005 INFO L93 Difference]: Finished difference Result 40 states and 67 transitions. [2020-04-18 11:11:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-04-18 11:11:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:04,006 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1026922250, now seen corresponding path program 3 times [2020-04-18 11:11:04,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:04,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415120439] [2020-04-18 11:11:04,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:04,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415120439] [2020-04-18 11:11:04,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:04,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:04,096 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:04,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,102 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 11:11:04,103 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,117 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:04,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:04,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:04,118 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-04-18 11:11:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,145 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 11:11:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 11:11:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:04,145 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:11:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 4 times [2020-04-18 11:11:04,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:04,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709528264] [2020-04-18 11:11:04,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:04,243 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 11:11:04,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709528264] [2020-04-18 11:11:04,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:04,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:04,245 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:04,246 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,250 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:11:04,250 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,281 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:04,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:04,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:11:04,282 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand 6 states. [2020-04-18 11:11:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,310 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 11:11:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 11:11:04,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:04,312 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1494407276] [2020-04-18 11:11:04,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:04,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:11:04,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1494407276] [2020-04-18 11:11:04,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:11:04,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:04,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:11:04,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:11:04,314 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 7 states. [2020-04-18 11:11:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,420 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-04-18 11:11:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:11:04,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 11:11:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:04,422 INFO L225 Difference]: With dead ends: 160 [2020-04-18 11:11:04,422 INFO L226 Difference]: Without dead ends: 123 [2020-04-18 11:11:04,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:11:04,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-04-18 11:11:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-04-18 11:11:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-04-18 11:11:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-04-18 11:11:04,433 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-04-18 11:11:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:04,434 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-04-18 11:11:04,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:11:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-04-18 11:11:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:04,437 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:04,437 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:04,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-18 11:11:04,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:04,439 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1236642323] [2020-04-18 11:11:04,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,443 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 11:11:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:11:04,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:04,446 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash 971527177, now seen corresponding path program 2 times [2020-04-18 11:11:04,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:04,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668063539] [2020-04-18 11:11:04,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:04,487 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 11:11:04,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668063539] [2020-04-18 11:11:04,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:04,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:04,488 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:04,489 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 11:11:04,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,497 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:04,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:04,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:04,498 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:11:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,502 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 11:11:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 11:11:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:04,503 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,504 INFO L82 PathProgramCache]: Analyzing trace with hash 970144267, now seen corresponding path program 3 times [2020-04-18 11:11:04,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:04,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293182621] [2020-04-18 11:11:04,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:04,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293182621] [2020-04-18 11:11:04,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:04,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:04,602 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:04,603 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,608 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 11:11:04,608 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,621 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:04,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:04,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:04,622 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 4 states. [2020-04-18 11:11:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,660 INFO L93 Difference]: Finished difference Result 89 states and 160 transitions. [2020-04-18 11:11:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 160 transitions. [2020-04-18 11:11:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:04,661 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:11:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1873050359, now seen corresponding path program 4 times [2020-04-18 11:11:04,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:04,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408345846] [2020-04-18 11:11:04,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:04,713 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 11:11:04,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408345846] [2020-04-18 11:11:04,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:04,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:04,714 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:04,716 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,718 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 11:11:04,718 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,748 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:04,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:11:04,748 INFO L87 Difference]: Start difference. First operand 89 states and 160 transitions. Second operand 6 states. [2020-04-18 11:11:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,805 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 11:11:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 11:11:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:04,806 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:11:04,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:04,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 5 times [2020-04-18 11:11:04,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:04,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545461622] [2020-04-18 11:11:04,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:04,864 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 11:11:04,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545461622] [2020-04-18 11:11:04,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:04,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:04,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:04,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:04,868 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 11:11:04,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:04,895 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:04,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:11:04,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:11:04,896 INFO L87 Difference]: Start difference. First operand 91 states and 161 transitions. Second operand 7 states. [2020-04-18 11:11:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:04,960 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 11:11:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 11:11:04,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:04,961 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1236642323] [2020-04-18 11:11:04,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:04,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:11:04,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1236642323] [2020-04-18 11:11:04,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:11:04,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:04,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:11:04,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:11:04,962 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 8 states. [2020-04-18 11:11:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:05,078 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-18 11:11:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:11:05,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 11:11:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:05,080 INFO L225 Difference]: With dead ends: 118 [2020-04-18 11:11:05,080 INFO L226 Difference]: Without dead ends: 108 [2020-04-18 11:11:05,081 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:11:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-18 11:11:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-18 11:11:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-18 11:11:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-18 11:11:05,086 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-18 11:11:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:05,086 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-18 11:11:05,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:11:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-18 11:11:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,087 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:05,087 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 11:11:05,087 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 11:11:05,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:05,088 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [431790283] [2020-04-18 11:11:05,089 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,094 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:11:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:11:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,098 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:05,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 11:11:05,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:05,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211159811] [2020-04-18 11:11:05,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:05,122 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 11:11:05,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211159811] [2020-04-18 11:11:05,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:05,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:05,123 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:05,124 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,131 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 95 transitions. [2020-04-18 11:11:05,131 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:05,136 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:05,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:05,136 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 11:11:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:05,142 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 11:11:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 11:11:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,143 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 11:11:05,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:05,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104810761] [2020-04-18 11:11:05,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:05,172 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 11:11:05,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104810761] [2020-04-18 11:11:05,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:05,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:05,173 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:05,174 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 113 transitions. [2020-04-18 11:11:05,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:05,230 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:11:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:11:05,230 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 6 states. [2020-04-18 11:11:05,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:05,280 INFO L93 Difference]: Finished difference Result 448 states and 1122 transitions. [2020-04-18 11:11:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1122 transitions. [2020-04-18 11:11:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,282 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:11:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,282 INFO L82 PathProgramCache]: Analyzing trace with hash 219088266, now seen corresponding path program 4 times [2020-04-18 11:11:05,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:05,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812570993] [2020-04-18 11:11:05,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:05,322 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 11:11:05,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812570993] [2020-04-18 11:11:05,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:05,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:05,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:05,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,335 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 83 transitions. [2020-04-18 11:11:05,335 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:05,436 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 11:11:05,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:11:05,436 INFO L87 Difference]: Start difference. First operand 448 states and 1122 transitions. Second operand 6 states. [2020-04-18 11:11:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:05,470 INFO L93 Difference]: Finished difference Result 670 states and 1595 transitions. [2020-04-18 11:11:05,470 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1595 transitions. [2020-04-18 11:11:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,472 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:11:05,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,473 INFO L82 PathProgramCache]: Analyzing trace with hash 273605796, now seen corresponding path program 5 times [2020-04-18 11:11:05,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:05,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461508645] [2020-04-18 11:11:05,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:05,536 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 11:11:05,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461508645] [2020-04-18 11:11:05,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:05,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:05,537 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:05,539 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,547 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-04-18 11:11:05,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:05,583 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:05,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:05,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:11:05,583 INFO L87 Difference]: Start difference. First operand 670 states and 1595 transitions. Second operand 4 states. [2020-04-18 11:11:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:05,627 INFO L93 Difference]: Finished difference Result 928 states and 2059 transitions. [2020-04-18 11:11:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2059 transitions. [2020-04-18 11:11:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,630 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:11:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,630 INFO L82 PathProgramCache]: Analyzing trace with hash -287452954, now seen corresponding path program 6 times [2020-04-18 11:11:05,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:05,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237335415] [2020-04-18 11:11:05,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:05,688 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 11:11:05,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237335415] [2020-04-18 11:11:05,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:05,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:05,689 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:05,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,716 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 81 transitions. [2020-04-18 11:11:05,716 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:05,762 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:11:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:11:05,763 INFO L87 Difference]: Start difference. First operand 928 states and 2059 transitions. Second operand 6 states. [2020-04-18 11:11:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:05,872 INFO L93 Difference]: Finished difference Result 998 states and 2142 transitions. [2020-04-18 11:11:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2142 transitions. [2020-04-18 11:11:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:05,875 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:11:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1691795752, now seen corresponding path program 7 times [2020-04-18 11:11:05,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:05,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069737334] [2020-04-18 11:11:05,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:05,952 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 11:11:05,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069737334] [2020-04-18 11:11:05,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:05,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:11:05,953 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:05,954 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:05,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 11:11:05,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:06,000 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:11:06,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:11:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:11:06,001 INFO L87 Difference]: Start difference. First operand 998 states and 2142 transitions. Second operand 7 states. [2020-04-18 11:11:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:06,124 INFO L93 Difference]: Finished difference Result 1006 states and 2146 transitions. [2020-04-18 11:11:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 2146 transitions. [2020-04-18 11:11:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:06,128 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:11:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 8 times [2020-04-18 11:11:06,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:06,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362868651] [2020-04-18 11:11:06,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:06,172 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 11:11:06,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362868651] [2020-04-18 11:11:06,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:06,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:06,173 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:06,176 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:06,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-04-18 11:11:06,179 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:06,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:06,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:11:06,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:11:06,261 INFO L87 Difference]: Start difference. First operand 1006 states and 2146 transitions. Second operand 5 states. [2020-04-18 11:11:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:06,310 INFO L93 Difference]: Finished difference Result 1412 states and 2920 transitions. [2020-04-18 11:11:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2920 transitions. [2020-04-18 11:11:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:06,314 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:11:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 9 times [2020-04-18 11:11:06,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:06,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038512538] [2020-04-18 11:11:06,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:06,351 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 11:11:06,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038512538] [2020-04-18 11:11:06,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:06,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:06,352 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:06,353 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:06,356 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 21 transitions. [2020-04-18 11:11:06,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:06,378 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:06,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-04-18 11:11:06,379 INFO L87 Difference]: Start difference. First operand 1412 states and 2920 transitions. Second operand 4 states. [2020-04-18 11:11:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:06,418 INFO L93 Difference]: Finished difference Result 2075 states and 4253 transitions. [2020-04-18 11:11:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 4253 transitions. [2020-04-18 11:11:06,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:06,424 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [431790283] [2020-04-18 11:11:06,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:06,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:11:06,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [431790283] [2020-04-18 11:11:06,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 11:11:06,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:06,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 11:11:06,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:11:06,431 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 20 states. [2020-04-18 11:11:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:09,117 INFO L93 Difference]: Finished difference Result 313 states and 618 transitions. [2020-04-18 11:11:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-04-18 11:11:09,117 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-04-18 11:11:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:09,118 INFO L225 Difference]: With dead ends: 313 [2020-04-18 11:11:09,118 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:11:09,123 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4569 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1746, Invalid=11364, Unknown=0, NotChecked=0, Total=13110 [2020-04-18 11:11:09,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:11:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:11:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:11:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:11:09,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:11:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:09,124 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:11:09,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 11:11:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:11:09,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:09,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:11:09 BasicIcfg [2020-04-18 11:11:09,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:11:09,130 INFO L168 Benchmark]: Toolchain (without parser) took 9990.09 ms. Allocated memory was 138.9 MB in the beginning and 317.2 MB in the end (delta: 178.3 MB). Free memory was 101.7 MB in the beginning and 162.4 MB in the end (delta: -60.7 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,131 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.97 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 157.9 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,132 INFO L168 Benchmark]: Boogie Preprocessor took 34.27 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,133 INFO L168 Benchmark]: RCFGBuilder took 479.07 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,134 INFO L168 Benchmark]: TraceAbstraction took 8639.86 ms. Allocated memory was 202.9 MB in the beginning and 317.2 MB in the end (delta: 114.3 MB). Free memory was 131.0 MB in the beginning and 162.4 MB in the end (delta: -31.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:09,136 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.97 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 157.9 MB in the end (delta: -57.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 202.9 MB. Free memory was 157.3 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.27 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.07 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8639.86 ms. Allocated memory was 202.9 MB in the beginning and 317.2 MB in the end (delta: 114.3 MB). Free memory was 131.0 MB in the beginning and 162.4 MB in the end (delta: -31.4 MB). Peak memory consumption was 82.9 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, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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: 8.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 159 SDtfs, 361 SDslu, 602 SDs, 0 SdLazy, 1084 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4622 ImplicationChecksByTransitivity, 2.3s 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...