/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:31:33,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:31:33,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:31:33,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:31:33,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:31:33,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:31:33,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:31:33,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:31:33,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:31:33,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:31:33,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:31:33,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:31:33,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:31:33,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:31:33,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:31:33,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:31:33,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:31:33,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:31:33,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:31:33,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:31:33,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:31:33,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:31:33,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:31:33,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:31:33,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:31:33,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:31:33,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:31:33,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:31:33,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:31:33,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:31:33,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:31:33,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:31:33,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:31:33,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:31:33,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:31:33,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:31:33,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:31:33,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:31:33,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:31:33,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:31:33,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:31:33,855 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-VariableLbe-McrStrategy.epf [2020-04-18 15:31:33,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:31:33,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:31:33,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:31:33,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:31:33,872 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:31:33,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:31:33,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:31:33,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:31:33,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:31:33,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:31:33,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:31:33,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:31:33,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:31:33,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:31:33,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:31:33,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:31:33,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:31:33,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:31:33,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:31:33,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:31:33,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:31:33,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:31:33,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:31:33,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:31:33,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:31:33,876 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:31:33,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:31:33,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:31:33,876 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:31:33,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:31:33,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:31:34,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:31:34,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:31:34,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:31:34,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:31:34,154 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:31:34,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-04-18 15:31:34,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a354b714/60d3174b9cf44c0b845103fadd08d9ed/FLAG73be80c65 [2020-04-18 15:31:34,823 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:31:34,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-04-18 15:31:34,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a354b714/60d3174b9cf44c0b845103fadd08d9ed/FLAG73be80c65 [2020-04-18 15:31:35,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a354b714/60d3174b9cf44c0b845103fadd08d9ed [2020-04-18 15:31:35,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:31:35,103 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:31:35,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:31:35,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:31:35,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:31:35,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85fced0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35, skipping insertion in model container [2020-04-18 15:31:35,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:31:35,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:31:35,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:31:35,696 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:31:35,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:31:35,829 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:31:35,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35 WrapperNode [2020-04-18 15:31:35,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:31:35,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:31:35,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:31:35,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:31:35,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:31:35,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:31:35,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:31:35,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:31:35,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... [2020-04-18 15:31:35,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:31:35,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:31:35,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:31:35,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:31:35,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:31:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:31:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:31:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:31:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:31:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:31:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:31:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:31:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:31:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:31:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:31:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:31:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:31:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:31:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:31:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:31:36,045 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 15:31:36,472 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:31:36,472 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:31:36,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:31:36 BoogieIcfgContainer [2020-04-18 15:31:36,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:31:36,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:31:36,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:31:36,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:31:36,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:31:35" (1/3) ... [2020-04-18 15:31:36,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af11fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:31:36, skipping insertion in model container [2020-04-18 15:31:36,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:31:35" (2/3) ... [2020-04-18 15:31:36,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af11fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:31:36, skipping insertion in model container [2020-04-18 15:31:36,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:31:36" (3/3) ... [2020-04-18 15:31:36,493 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-04-18 15:31:36,504 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:31:36,504 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:31:36,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:31:36,514 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:31:36,544 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,544 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,544 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,545 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,545 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,545 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,546 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,546 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,546 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,547 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,547 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,547 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,548 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,548 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,548 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,548 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,549 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,549 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,550 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,550 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,550 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,550 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,551 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,551 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,555 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,556 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,556 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,556 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,570 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,570 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,571 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,571 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,573 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,573 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,574 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,574 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,580 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,580 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,581 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,581 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:31:36,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:31:36,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:31:36,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:31:36,624 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:31:36,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:31:36,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:31:36,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:31:36,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:31:36,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:31:36,641 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-04-18 15:31:36,644 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 15:31:36,688 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 15:31:36,688 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:31:36,697 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:31:36,702 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 15:31:36,734 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 15:31:36,735 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:31:36,736 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:31:36,738 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 15:31:36,739 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:31:38,225 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 15:31:38,289 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-04-18 15:31:38,290 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-18 15:31:38,293 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 15:31:38,350 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 15:31:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 15:31:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:31:38,363 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:38,363 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:38,364 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:38,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:38,370 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-04-18 15:31:38,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:38,378 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1786456690] [2020-04-18 15:31:38,394 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:38,407 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:31:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:31:38,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:31:38,410 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:38,411 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 2 times [2020-04-18 15:31:38,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:38,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486990996] [2020-04-18 15:31:38,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:38,593 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 15:31:38,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486990996] [2020-04-18 15:31:38,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:38,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:38,596 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:38,597 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:38,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:31:38,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:38,605 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:31:38,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:31:38,618 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 15:31:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:38,623 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:31:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:31:38,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:38,628 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1786456690] [2020-04-18 15:31:38,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:38,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:31:38,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1786456690] [2020-04-18 15:31:38,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:31:38,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:38,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:31:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:31:38,637 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 15:31:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:38,684 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 15:31:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:31:38,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 15:31:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:38,714 INFO L225 Difference]: With dead ends: 850 [2020-04-18 15:31:38,714 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 15:31:38,716 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:31:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 15:31:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 15:31:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 15:31:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 15:31:38,870 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 15:31:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:38,871 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 15:31:38,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:31:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 15:31:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:38,874 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:38,874 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:38,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-04-18 15:31:38,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:38,876 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [221492663] [2020-04-18 15:31:38,876 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:38,877 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:31:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:31:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:31:38,878 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 2 times [2020-04-18 15:31:38,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:38,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573454210] [2020-04-18 15:31:38,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:39,023 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 15:31:39,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573454210] [2020-04-18 15:31:39,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:39,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:39,024 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:39,025 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,027 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:31:39,027 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:39,036 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:39,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:39,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:39,037 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:31:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,051 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 15:31:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 15:31:39,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:39,052 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [221492663] [2020-04-18 15:31:39,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:39,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:31:39,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [221492663] [2020-04-18 15:31:39,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:31:39,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:39,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:39,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:31:39,054 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 15:31:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,083 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-18 15:31:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:31:39,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:31:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:39,090 INFO L225 Difference]: With dead ends: 778 [2020-04-18 15:31:39,090 INFO L226 Difference]: Without dead ends: 634 [2020-04-18 15:31:39,091 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:31:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-18 15:31:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-18 15:31:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-18 15:31:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-18 15:31:39,120 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-18 15:31:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:39,120 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-18 15:31:39,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:31:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-18 15:31:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:31:39,123 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:39,123 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:39,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-04-18 15:31:39,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:39,125 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [200033543] [2020-04-18 15:31:39,125 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,126 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:31:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 15:31:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:31:39,127 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 2 times [2020-04-18 15:31:39,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:39,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837536329] [2020-04-18 15:31:39,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:39,229 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 15:31:39,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837536329] [2020-04-18 15:31:39,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:39,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:31:39,233 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:39,234 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,237 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:31:39,238 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:39,246 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:31:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:31:39,247 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 15:31:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,255 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-04-18 15:31:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 15:31:39,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:39,256 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [200033543] [2020-04-18 15:31:39,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:39,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:31:39,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [200033543] [2020-04-18 15:31:39,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:31:39,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:39,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:39,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:31:39,261 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-18 15:31:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,287 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2020-04-18 15:31:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:31:39,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:31:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:39,293 INFO L225 Difference]: With dead ends: 688 [2020-04-18 15:31:39,294 INFO L226 Difference]: Without dead ends: 580 [2020-04-18 15:31:39,294 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:31:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-18 15:31:39,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-04-18 15:31:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-18 15:31:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2020-04-18 15:31:39,317 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2020-04-18 15:31:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:39,317 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2020-04-18 15:31:39,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:31:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2020-04-18 15:31:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:39,319 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:39,319 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:39,319 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:39,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 1 times [2020-04-18 15:31:39,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:39,320 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1658952613] [2020-04-18 15:31:39,321 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,322 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 58 transitions. [2020-04-18 15:31:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:31:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:31:39,325 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 2 times [2020-04-18 15:31:39,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:39,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207278482] [2020-04-18 15:31:39,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:39,442 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 15:31:39,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207278482] [2020-04-18 15:31:39,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:39,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:39,443 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:39,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,448 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:31:39,448 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:39,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:31:39,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:39,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:31:39,599 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 8 states. [2020-04-18 15:31:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,629 INFO L93 Difference]: Finished difference Result 34 states and 58 transitions. [2020-04-18 15:31:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2020-04-18 15:31:39,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:39,630 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1658952613] [2020-04-18 15:31:39,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:39,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:31:39,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1658952613] [2020-04-18 15:31:39,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:31:39,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:39,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:39,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:31:39,633 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand 8 states. [2020-04-18 15:31:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,697 INFO L93 Difference]: Finished difference Result 751 states and 2457 transitions. [2020-04-18 15:31:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:31:39,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 15:31:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:39,701 INFO L225 Difference]: With dead ends: 751 [2020-04-18 15:31:39,701 INFO L226 Difference]: Without dead ends: 358 [2020-04-18 15:31:39,702 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:31:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-04-18 15:31:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-04-18 15:31:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-04-18 15:31:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-04-18 15:31:39,716 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-04-18 15:31:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:39,716 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-04-18 15:31:39,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:31:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-04-18 15:31:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:31:39,718 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:39,718 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:39,718 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-04-18 15:31:39,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:39,720 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1285287466] [2020-04-18 15:31:39,721 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,722 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 102 transitions. [2020-04-18 15:31:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 15:31:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:31:39,725 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1745220586, now seen corresponding path program 2 times [2020-04-18 15:31:39,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:39,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608479628] [2020-04-18 15:31:39,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:39,802 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 15:31:39,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608479628] [2020-04-18 15:31:39,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:39,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:39,804 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:39,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:39,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 15:31:39,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:39,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:31:39,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:39,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:31:39,903 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 8 states. [2020-04-18 15:31:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:39,963 INFO L93 Difference]: Finished difference Result 60 states and 115 transitions. [2020-04-18 15:31:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 115 transitions. [2020-04-18 15:31:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:31:39,965 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 3 times [2020-04-18 15:31:39,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:39,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039849550] [2020-04-18 15:31:39,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:40,039 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 15:31:40,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039849550] [2020-04-18 15:31:40,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:40,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:40,040 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:40,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:40,050 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-04-18 15:31:40,050 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:40,125 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:31:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:31:40,126 INFO L87 Difference]: Start difference. First operand 60 states and 115 transitions. Second operand 6 states. [2020-04-18 15:31:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:40,158 INFO L93 Difference]: Finished difference Result 60 states and 115 transitions. [2020-04-18 15:31:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 115 transitions. [2020-04-18 15:31:40,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:40,159 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1285287466] [2020-04-18 15:31:40,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:40,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:31:40,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1285287466] [2020-04-18 15:31:40,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:31:40,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:40,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:31:40,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:31:40,161 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand 11 states. [2020-04-18 15:31:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:40,298 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-04-18 15:31:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 15:31:40,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 15:31:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:40,301 INFO L225 Difference]: With dead ends: 496 [2020-04-18 15:31:40,301 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 15:31:40,302 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:31:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 15:31:40,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 15:31:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 15:31:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-04-18 15:31:40,313 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-04-18 15:31:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:40,313 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-04-18 15:31:40,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:31:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-04-18 15:31:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:31:40,314 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:40,314 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:40,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:40,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-04-18 15:31:40,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:40,316 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1042253646] [2020-04-18 15:31:40,316 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:40,320 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 15:31:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 15:31:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:31:40,322 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:40,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:40,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1852625697, now seen corresponding path program 2 times [2020-04-18 15:31:40,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:40,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848618598] [2020-04-18 15:31:40,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:40,376 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 15:31:40,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848618598] [2020-04-18 15:31:40,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:40,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:40,377 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:40,379 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:40,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 89 transitions. [2020-04-18 15:31:40,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:40,519 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:31:40,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:40,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:31:40,520 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 8 states. [2020-04-18 15:31:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:40,605 INFO L93 Difference]: Finished difference Result 114 states and 276 transitions. [2020-04-18 15:31:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 276 transitions. [2020-04-18 15:31:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:31:40,606 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1382462049, now seen corresponding path program 3 times [2020-04-18 15:31:40,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:40,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725592762] [2020-04-18 15:31:40,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:40,659 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 15:31:40,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725592762] [2020-04-18 15:31:40,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:40,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:40,660 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:40,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:40,666 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:31:40,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:40,764 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:31:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:31:40,765 INFO L87 Difference]: Start difference. First operand 114 states and 276 transitions. Second operand 8 states. [2020-04-18 15:31:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:40,864 INFO L93 Difference]: Finished difference Result 145 states and 324 transitions. [2020-04-18 15:31:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 324 transitions. [2020-04-18 15:31:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:31:40,865 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:40,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 4 times [2020-04-18 15:31:40,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:40,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677292522] [2020-04-18 15:31:40,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:40,945 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 15:31:40,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677292522] [2020-04-18 15:31:40,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:40,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:40,946 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:40,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:40,952 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:31:40,952 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:40,990 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:31:40,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:31:40,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:31:40,992 INFO L87 Difference]: Start difference. First operand 145 states and 324 transitions. Second operand 4 states. [2020-04-18 15:31:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:41,009 INFO L93 Difference]: Finished difference Result 145 states and 324 transitions. [2020-04-18 15:31:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 324 transitions. [2020-04-18 15:31:41,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:41,010 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1042253646] [2020-04-18 15:31:41,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:41,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:31:41,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1042253646] [2020-04-18 15:31:41,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 15:31:41,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:41,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 15:31:41,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:31:41,011 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 15 states. [2020-04-18 15:31:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:41,695 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-04-18 15:31:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 15:31:41,695 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-04-18 15:31:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:41,697 INFO L225 Difference]: With dead ends: 319 [2020-04-18 15:31:41,698 INFO L226 Difference]: Without dead ends: 238 [2020-04-18 15:31:41,699 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 15:31:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-18 15:31:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-18 15:31:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-18 15:31:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-04-18 15:31:41,706 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-04-18 15:31:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:41,707 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-04-18 15:31:41,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 15:31:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-04-18 15:31:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:41,708 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:41,708 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:41,708 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:41,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 1 times [2020-04-18 15:31:41,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:41,709 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [918171171] [2020-04-18 15:31:41,710 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:41,712 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 378 transitions. [2020-04-18 15:31:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:31:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:41,714 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash -85600614, now seen corresponding path program 2 times [2020-04-18 15:31:41,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:41,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236173812] [2020-04-18 15:31:41,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:41,779 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 15:31:41,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236173812] [2020-04-18 15:31:41,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:41,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:31:41,780 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:41,781 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:41,786 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 78 transitions. [2020-04-18 15:31:41,786 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:41,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:31:42,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:31:42,128 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:31:42,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:31:42,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:31:42,129 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 14 states. [2020-04-18 15:31:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:42,511 INFO L93 Difference]: Finished difference Result 168 states and 437 transitions. [2020-04-18 15:31:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 437 transitions. [2020-04-18 15:31:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:42,512 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash -466783372, now seen corresponding path program 3 times [2020-04-18 15:31:42,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:42,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881120420] [2020-04-18 15:31:42,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:42,550 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 15:31:42,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881120420] [2020-04-18 15:31:42,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:42,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:31:42,551 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:42,552 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:42,556 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 15:31:42,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:42,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:42,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:31:42,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:31:42,631 INFO L87 Difference]: Start difference. First operand 168 states and 437 transitions. Second operand 6 states. [2020-04-18 15:31:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:42,698 INFO L93 Difference]: Finished difference Result 230 states and 564 transitions. [2020-04-18 15:31:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 564 transitions. [2020-04-18 15:31:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:31:42,699 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:42,700 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 4 times [2020-04-18 15:31:42,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:42,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893977364] [2020-04-18 15:31:42,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:42,755 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 15:31:42,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893977364] [2020-04-18 15:31:42,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:42,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:42,756 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:42,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:42,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 15:31:42,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:42,975 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:42,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:31:42,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-04-18 15:31:42,976 INFO L87 Difference]: Start difference. First operand 230 states and 564 transitions. Second operand 7 states. [2020-04-18 15:31:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:43,029 INFO L93 Difference]: Finished difference Result 230 states and 564 transitions. [2020-04-18 15:31:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 564 transitions. [2020-04-18 15:31:43,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:43,030 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [918171171] [2020-04-18 15:31:43,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:43,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:31:43,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [918171171] [2020-04-18 15:31:43,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 15:31:43,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:43,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 15:31:43,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 15:31:43,032 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand 22 states. [2020-04-18 15:31:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:44,025 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-04-18 15:31:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-04-18 15:31:44,026 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 16 [2020-04-18 15:31:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:44,027 INFO L225 Difference]: With dead ends: 247 [2020-04-18 15:31:44,027 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 15:31:44,029 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=578, Invalid=2728, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 15:31:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 15:31:44,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 15:31:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 15:31:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-04-18 15:31:44,036 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-04-18 15:31:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:44,036 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-04-18 15:31:44,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 15:31:44,036 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-04-18 15:31:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:31:44,037 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:44,037 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 15:31:44,038 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-04-18 15:31:44,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:44,038 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1741177787] [2020-04-18 15:31:44,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:44,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 15:31:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 15:31:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:31:44,045 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:44,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:44,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1641348500, now seen corresponding path program 2 times [2020-04-18 15:31:44,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:44,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578065931] [2020-04-18 15:31:44,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:44,115 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 15:31:44,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578065931] [2020-04-18 15:31:44,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:44,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:31:44,117 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:44,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:44,123 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 83 transitions. [2020-04-18 15:31:44,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:44,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:31:44,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 15:31:44,477 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:31:44,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:31:44,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:31:44,478 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 14 states. [2020-04-18 15:31:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:45,013 INFO L93 Difference]: Finished difference Result 246 states and 690 transitions. [2020-04-18 15:31:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 690 transitions. [2020-04-18 15:31:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:31:45,015 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1585382406, now seen corresponding path program 3 times [2020-04-18 15:31:45,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:45,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456176075] [2020-04-18 15:31:45,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:45,059 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 15:31:45,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456176075] [2020-04-18 15:31:45,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:45,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:45,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:45,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:45,067 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 51 transitions. [2020-04-18 15:31:45,067 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:45,234 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:31:45,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:31:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:31:45,235 INFO L87 Difference]: Start difference. First operand 246 states and 690 transitions. Second operand 6 states. [2020-04-18 15:31:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:45,322 INFO L93 Difference]: Finished difference Result 342 states and 906 transitions. [2020-04-18 15:31:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 906 transitions. [2020-04-18 15:31:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:31:45,324 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:45,324 INFO L82 PathProgramCache]: Analyzing trace with hash -817315854, now seen corresponding path program 4 times [2020-04-18 15:31:45,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:45,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498566162] [2020-04-18 15:31:45,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:45,442 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 15:31:45,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498566162] [2020-04-18 15:31:45,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:45,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:45,443 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:45,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:45,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 86 transitions. [2020-04-18 15:31:45,452 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:45,605 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:45,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:31:45,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2020-04-18 15:31:45,606 INFO L87 Difference]: Start difference. First operand 342 states and 906 transitions. Second operand 7 states. [2020-04-18 15:31:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:45,686 INFO L93 Difference]: Finished difference Result 376 states and 951 transitions. [2020-04-18 15:31:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 951 transitions. [2020-04-18 15:31:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:31:45,688 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:31:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 5 times [2020-04-18 15:31:45,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:45,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62685900] [2020-04-18 15:31:45,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:45,742 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 15:31:45,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62685900] [2020-04-18 15:31:45,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:45,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:31:45,744 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:45,748 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:45,754 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 15:31:45,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:45,852 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:31:45,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:45,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 15:31:45,853 INFO L87 Difference]: Start difference. First operand 376 states and 951 transitions. Second operand 8 states. [2020-04-18 15:31:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:45,921 INFO L93 Difference]: Finished difference Result 376 states and 951 transitions. [2020-04-18 15:31:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 951 transitions. [2020-04-18 15:31:45,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:45,923 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1741177787] [2020-04-18 15:31:45,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:45,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:31:45,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1741177787] [2020-04-18 15:31:45,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 15:31:45,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:45,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 15:31:45,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 15:31:45,925 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 23 states. [2020-04-18 15:31:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:46,796 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-04-18 15:31:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 15:31:46,796 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 17 [2020-04-18 15:31:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:46,797 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:31:46,798 INFO L226 Difference]: Without dead ends: 132 [2020-04-18 15:31:46,800 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=572, Invalid=2850, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 15:31:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-18 15:31:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-18 15:31:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-18 15:31:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-04-18 15:31:46,804 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-04-18 15:31:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:46,804 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-04-18 15:31:46,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 15:31:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-04-18 15:31:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:31:46,805 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:46,806 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:46,806 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:46,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-04-18 15:31:46,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:46,807 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [802067328] [2020-04-18 15:31:46,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:46,813 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 1134 transitions. [2020-04-18 15:31:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-04-18 15:31:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:31:46,818 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1946502321, now seen corresponding path program 2 times [2020-04-18 15:31:46,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:46,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093901375] [2020-04-18 15:31:46,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:46,857 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 15:31:46,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093901375] [2020-04-18 15:31:46,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:46,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:46,858 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:46,860 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:46,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 147 transitions. [2020-04-18 15:31:46,871 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:46,953 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:31:46,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:46,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:31:46,954 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 8 states. [2020-04-18 15:31:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:47,011 INFO L93 Difference]: Finished difference Result 474 states and 1460 transitions. [2020-04-18 15:31:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1460 transitions. [2020-04-18 15:31:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:31:47,014 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:47,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:47,014 INFO L82 PathProgramCache]: Analyzing trace with hash -436496835, now seen corresponding path program 3 times [2020-04-18 15:31:47,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:47,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877054596] [2020-04-18 15:31:47,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:47,088 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 15:31:47,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877054596] [2020-04-18 15:31:47,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:47,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 15:31:47,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:47,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:47,100 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 77 transitions. [2020-04-18 15:31:47,100 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:47,263 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:47,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:31:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:31:47,264 INFO L87 Difference]: Start difference. First operand 474 states and 1460 transitions. Second operand 11 states. [2020-04-18 15:31:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:47,766 INFO L93 Difference]: Finished difference Result 813 states and 2442 transitions. [2020-04-18 15:31:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 2442 transitions. [2020-04-18 15:31:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:31:47,768 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:47,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1475870333, now seen corresponding path program 4 times [2020-04-18 15:31:47,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:47,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654215203] [2020-04-18 15:31:47,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:47,821 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 15:31:47,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654215203] [2020-04-18 15:31:47,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:47,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:31:47,822 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:47,824 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:47,831 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-04-18 15:31:47,831 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:48,028 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:48,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:31:48,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-04-18 15:31:48,029 INFO L87 Difference]: Start difference. First operand 813 states and 2442 transitions. Second operand 9 states. [2020-04-18 15:31:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:48,233 INFO L93 Difference]: Finished difference Result 833 states and 2462 transitions. [2020-04-18 15:31:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2462 transitions. [2020-04-18 15:31:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:31:48,237 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:31:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:48,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 5 times [2020-04-18 15:31:48,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:48,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303009773] [2020-04-18 15:31:48,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:48,313 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 15:31:48,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303009773] [2020-04-18 15:31:48,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:48,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:31:48,314 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:48,316 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:48,322 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-04-18 15:31:48,323 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:48,456 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:31:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:31:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 15:31:48,457 INFO L87 Difference]: Start difference. First operand 833 states and 2462 transitions. Second operand 10 states. [2020-04-18 15:31:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:48,630 INFO L93 Difference]: Finished difference Result 833 states and 2462 transitions. [2020-04-18 15:31:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2462 transitions. [2020-04-18 15:31:48,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:48,632 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [802067328] [2020-04-18 15:31:48,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:48,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 15:31:48,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [802067328] [2020-04-18 15:31:48,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 15:31:48,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:48,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 15:31:48,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 15:31:48,634 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 24 states. [2020-04-18 15:31:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:49,221 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-04-18 15:31:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 15:31:49,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 19 [2020-04-18 15:31:49,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:49,223 INFO L225 Difference]: With dead ends: 121 [2020-04-18 15:31:49,223 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 15:31:49,225 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=581, Invalid=2281, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 15:31:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 15:31:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 15:31:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 15:31:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-04-18 15:31:49,228 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-04-18 15:31:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:49,229 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-04-18 15:31:49,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 15:31:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-04-18 15:31:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:49,229 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:31:49,229 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:31:49,229 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:31:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-04-18 15:31:49,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:31:49,230 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1577493800] [2020-04-18 15:31:49,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:49,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 706 states and 2442 transitions. [2020-04-18 15:31:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 15:31:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:49,251 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:31:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash -736929817, now seen corresponding path program 2 times [2020-04-18 15:31:49,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:49,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384394867] [2020-04-18 15:31:49,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:49,292 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 15:31:49,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384394867] [2020-04-18 15:31:49,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:49,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:49,293 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:49,295 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:49,309 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 189 transitions. [2020-04-18 15:31:49,309 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:49,395 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:31:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:31:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:31:49,396 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 8 states. [2020-04-18 15:31:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:49,455 INFO L93 Difference]: Finished difference Result 1066 states and 3660 transitions. [2020-04-18 15:31:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3660 transitions. [2020-04-18 15:31:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:49,458 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:31:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1432336007, now seen corresponding path program 3 times [2020-04-18 15:31:49,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:49,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157053183] [2020-04-18 15:31:49,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:49,533 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 15:31:49,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157053183] [2020-04-18 15:31:49,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:49,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 15:31:49,534 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:49,536 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:49,544 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 79 transitions. [2020-04-18 15:31:49,544 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:49,730 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:31:49,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:31:49,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:31:49,731 INFO L87 Difference]: Start difference. First operand 1066 states and 3660 transitions. Second operand 11 states. [2020-04-18 15:31:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:50,365 INFO L93 Difference]: Finished difference Result 1903 states and 6399 transitions. [2020-04-18 15:31:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 6399 transitions. [2020-04-18 15:31:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:50,371 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:31:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:50,371 INFO L82 PathProgramCache]: Analyzing trace with hash 971181767, now seen corresponding path program 4 times [2020-04-18 15:31:50,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:50,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13452043] [2020-04-18 15:31:50,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:31:50,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13452043] [2020-04-18 15:31:50,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:50,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:31:50,425 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:50,428 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:50,439 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 83 transitions. [2020-04-18 15:31:50,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:50,640 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:31:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:31:50,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-04-18 15:31:50,641 INFO L87 Difference]: Start difference. First operand 1903 states and 6399 transitions. Second operand 9 states. [2020-04-18 15:31:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:50,986 INFO L93 Difference]: Finished difference Result 2029 states and 6597 transitions. [2020-04-18 15:31:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 6597 transitions. [2020-04-18 15:31:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:50,991 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:31:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash 188682519, now seen corresponding path program 5 times [2020-04-18 15:31:50,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:50,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427202263] [2020-04-18 15:31:50,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:51,050 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 15:31:51,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427202263] [2020-04-18 15:31:51,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:51,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:31:51,051 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:51,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:51,061 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-04-18 15:31:51,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:51,195 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:31:51,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:31:51,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 15:31:51,197 INFO L87 Difference]: Start difference. First operand 2029 states and 6597 transitions. Second operand 7 states. [2020-04-18 15:31:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:51,279 INFO L93 Difference]: Finished difference Result 3227 states and 10027 transitions. [2020-04-18 15:31:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 10027 transitions. [2020-04-18 15:31:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:51,285 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:31:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2121239349, now seen corresponding path program 6 times [2020-04-18 15:31:51,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:51,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629762679] [2020-04-18 15:31:51,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:51,348 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 15:31:51,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629762679] [2020-04-18 15:31:51,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:51,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:31:51,349 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:51,351 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:51,360 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-04-18 15:31:51,360 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:51,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:31:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:31:51,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 15:31:51,501 INFO L87 Difference]: Start difference. First operand 3227 states and 10027 transitions. Second operand 10 states. [2020-04-18 15:31:51,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:51,782 INFO L93 Difference]: Finished difference Result 3251 states and 10043 transitions. [2020-04-18 15:31:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 10043 transitions. [2020-04-18 15:31:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 15:31:51,787 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:31:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:31:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash 468230697, now seen corresponding path program 7 times [2020-04-18 15:31:51,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:31:51,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779847912] [2020-04-18 15:31:51,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:31:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:31:51,864 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 15:31:51,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779847912] [2020-04-18 15:31:51,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:31:51,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:31:51,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:31:51,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:31:51,872 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 15:31:51,873 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:31:51,925 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:31:51,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:31:51,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 15:31:51,926 INFO L87 Difference]: Start difference. First operand 3251 states and 10043 transitions. Second operand 5 states. [2020-04-18 15:31:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:52,021 INFO L93 Difference]: Finished difference Result 5184 states and 15265 transitions. [2020-04-18 15:31:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 15265 transitions. [2020-04-18 15:31:52,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:52,032 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1577493800] [2020-04-18 15:31:52,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:31:52,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:31:52,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1577493800] [2020-04-18 15:31:52,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-04-18 15:31:52,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:31:52,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-04-18 15:31:52,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1863, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 15:31:52,035 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 30 states. [2020-04-18 15:31:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:31:54,226 INFO L93 Difference]: Finished difference Result 179 states and 402 transitions. [2020-04-18 15:31:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-18 15:31:54,227 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 21 [2020-04-18 15:31:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:31:54,227 INFO L225 Difference]: With dead ends: 179 [2020-04-18 15:31:54,227 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:31:54,231 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2867 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1342, Invalid=8360, Unknown=0, NotChecked=0, Total=9702 [2020-04-18 15:31:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:31:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:31:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:31:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:31:54,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-18 15:31:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:31:54,232 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:31:54,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-04-18 15:31:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:31:54,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:31:54,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:31:54 BasicIcfg [2020-04-18 15:31:54,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:31:54,239 INFO L168 Benchmark]: Toolchain (without parser) took 19160.00 ms. Allocated memory was 138.4 MB in the beginning and 431.0 MB in the end (delta: 292.6 MB). Free memory was 101.0 MB in the beginning and 175.3 MB in the end (delta: -74.3 MB). Peak memory consumption was 218.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,239 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.23 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.0 MB in the beginning and 158.2 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.71 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,241 INFO L168 Benchmark]: Boogie Preprocessor took 57.49 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,241 INFO L168 Benchmark]: RCFGBuilder took 505.16 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 130.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,242 INFO L168 Benchmark]: TraceAbstraction took 17752.35 ms. Allocated memory was 201.9 MB in the beginning and 431.0 MB in the end (delta: 229.1 MB). Free memory was 129.9 MB in the beginning and 175.3 MB in the end (delta: -45.5 MB). Peak memory consumption was 183.7 MB. Max. memory is 7.1 GB. [2020-04-18 15:31:54,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.23 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.0 MB in the beginning and 158.2 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 86.71 ms. Allocated memory is still 201.9 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.49 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.16 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 130.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17752.35 ms. Allocated memory was 201.9 MB in the beginning and 431.0 MB in the end (delta: 229.1 MB). Free memory was 129.9 MB in the beginning and 175.3 MB in the end (delta: -45.5 MB). Peak memory consumption was 183.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 933 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 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 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 221 SDtfs, 1202 SDslu, 1210 SDs, 0 SdLazy, 1970 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 781 GetRequests, 428 SyntacticMatches, 12 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5938 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 10 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...