/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:22:51,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:22:51,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:22:51,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:22:51,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:22:51,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:22:51,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:22:51,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:22:51,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:22:51,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:22:51,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:22:51,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:22:51,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:22:51,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:22:51,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:22:51,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:22:51,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:22:51,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:22:51,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:22:51,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:22:51,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:22:51,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:22:51,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:22:51,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:22:51,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:22:51,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:22:51,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:22:51,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:22:51,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:22:51,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:22:51,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:22:51,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:22:51,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:22:51,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:22:51,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:22:51,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:22:51,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:22:51,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:22:51,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:22:51,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:22:51,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:22:51,804 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 15:22:51,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:22:51,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:22:51,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:22:51,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:22:51,829 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:22:51,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:22:51,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:22:51,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:22:51,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:22:51,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:22:51,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:22:51,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:22:51,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:22:51,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:22:51,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:22:51,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:22:51,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:22:51,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:22:51,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:22:51,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:22:51,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:22:51,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:22:51,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:22:51,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:22:52,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:22:52,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:22:52,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:22:52,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:22:52,164 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:22:52,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-18 15:22:52,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4b2a92d/448ac42617d54c55bd20028111b1db88/FLAG799af1023 [2020-04-18 15:22:52,787 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:22:52,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-18 15:22:52,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4b2a92d/448ac42617d54c55bd20028111b1db88/FLAG799af1023 [2020-04-18 15:22:53,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4b2a92d/448ac42617d54c55bd20028111b1db88 [2020-04-18 15:22:53,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:22:53,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:22:53,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:22:53,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:22:53,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:22:53,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afd2d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53, skipping insertion in model container [2020-04-18 15:22:53,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:22:53,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:22:53,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:22:53,736 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:22:53,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:22:53,882 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:22:53,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53 WrapperNode [2020-04-18 15:22:53,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:22:53,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:22:53,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:22:53,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:22:53,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:22:53,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:22:53,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:22:53,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:22:53,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (1/1) ... [2020-04-18 15:22:53,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:22:53,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:22:53,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:22:53,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:22:53,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (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 15:22:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:22:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:22:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:22:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:22:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:22:54,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:22:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:22:54,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:22:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:22:54,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:22:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:22:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:22:54,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:22:54,069 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 15:22:54,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:22:54,444 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:22:54,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:22:54 BoogieIcfgContainer [2020-04-18 15:22:54,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:22:54,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:22:54,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:22:54,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:22:54,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:22:53" (1/3) ... [2020-04-18 15:22:54,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504521fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:22:54, skipping insertion in model container [2020-04-18 15:22:54,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:22:53" (2/3) ... [2020-04-18 15:22:54,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504521fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:22:54, skipping insertion in model container [2020-04-18 15:22:54,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:22:54" (3/3) ... [2020-04-18 15:22:54,458 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-04-18 15:22:54,468 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:22:54,468 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:22:54,474 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:22:54,475 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:22:54,512 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,513 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,516 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,516 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,517 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,517 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,518 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,518 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,518 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,519 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,519 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,520 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,521 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,521 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,522 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,522 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,522 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,522 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,529 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,529 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,529 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,530 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,546 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,546 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,546 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,547 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,549 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,550 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,550 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,550 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:22:54,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:22:54,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:22:54,601 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:22:54,601 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:22:54,601 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:22:54,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:22:54,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:22:54,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:22:54,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:22:54,634 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:22:54,636 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:22:54,713 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:22:54,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:22:54,725 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:22:54,730 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:22:54,778 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:22:54,778 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:22:54,783 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:22:54,786 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:22:54,787 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:22:56,143 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:22:56,218 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-18 15:22:56,218 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 15:22:56,222 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 15:22:56,268 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 15:22:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 15:22:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:22:56,282 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:56,283 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:56,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:56,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-18 15:22:56,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:56,295 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [39190671] [2020-04-18 15:22:56,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:56,321 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:22:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:22:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:22:56,323 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 2 times [2020-04-18 15:22:56,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:56,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734378186] [2020-04-18 15:22:56,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:56,559 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 15:22:56,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734378186] [2020-04-18 15:22:56,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:56,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:22:56,562 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:56,563 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:56,566 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:22:56,566 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:56,569 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:56,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:22:56,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:22:56,576 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:22:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:56,579 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:22:56,580 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:22:56,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:22:56,581 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [39190671] [2020-04-18 15:22:56,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:22:56,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:22:56,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [39190671] [2020-04-18 15:22:56,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:22:56,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:22:56,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:22:56,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:22:56,589 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 15:22:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:56,610 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 15:22:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:22:56,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:22:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:22:56,629 INFO L225 Difference]: With dead ends: 362 [2020-04-18 15:22:56,629 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 15:22:56,631 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:22:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 15:22:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 15:22:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 15:22:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 15:22:56,710 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 15:22:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:22:56,711 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 15:22:56,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:22:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 15:22:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:22:56,713 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:56,713 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:56,714 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:56,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-18 15:22:56,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:56,715 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [980606067] [2020-04-18 15:22:56,715 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:56,716 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:22:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:22:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:22:56,716 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:56,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:56,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 2 times [2020-04-18 15:22:56,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:56,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136326698] [2020-04-18 15:22:56,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:56,877 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 15:22:56,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136326698] [2020-04-18 15:22:56,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:56,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:22:56,878 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:56,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:56,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:22:56,882 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:56,903 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:56,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:56,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:22:56,904 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 15:22:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:56,923 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:22:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:22:56,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:22:56,923 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [980606067] [2020-04-18 15:22:56,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:22:56,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:22:56,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [980606067] [2020-04-18 15:22:56,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:22:56,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:22:56,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:56,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:22:56,927 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 15:22:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:56,967 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 15:22:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:22:56,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:22:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:22:56,973 INFO L225 Difference]: With dead ends: 330 [2020-04-18 15:22:56,973 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 15:22:56,976 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 15:22:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 15:22:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 15:22:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 15:22:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 15:22:57,010 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 15:22:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:22:57,012 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 15:22:57,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:22:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 15:22:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:22:57,016 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:57,016 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:57,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-04-18 15:22:57,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:57,018 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1389635833] [2020-04-18 15:22:57,018 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:22:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:22:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:22:57,020 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 2 times [2020-04-18 15:22:57,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:57,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879224002] [2020-04-18 15:22:57,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:57,114 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 15:22:57,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879224002] [2020-04-18 15:22:57,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:57,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:22:57,115 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:57,116 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,117 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:22:57,118 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:57,137 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:57,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:22:57,138 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-04-18 15:22:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:57,167 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-04-18 15:22:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-04-18 15:22:57,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:22:57,168 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1389635833] [2020-04-18 15:22:57,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:22:57,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:22:57,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1389635833] [2020-04-18 15:22:57,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:22:57,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:22:57,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:57,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:22:57,170 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-18 15:22:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:57,209 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-04-18 15:22:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:22:57,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 15:22:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:22:57,211 INFO L225 Difference]: With dead ends: 314 [2020-04-18 15:22:57,211 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 15:22:57,212 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:22:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 15:22:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 15:22:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 15:22:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-04-18 15:22:57,223 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-04-18 15:22:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:22:57,223 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-04-18 15:22:57,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:22:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-04-18 15:22:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:22:57,225 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:57,225 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:57,225 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-04-18 15:22:57,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:57,226 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1048393081] [2020-04-18 15:22:57,227 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,228 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 15:22:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:22:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:22:57,229 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1802735809, now seen corresponding path program 2 times [2020-04-18 15:22:57,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:57,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969782645] [2020-04-18 15:22:57,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:22:57,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969782645] [2020-04-18 15:22:57,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:57,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:57,323 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:57,324 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,327 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-04-18 15:22:57,327 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:57,351 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:57,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:22:57,352 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-04-18 15:22:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:57,403 INFO L93 Difference]: Finished difference Result 39 states and 64 transitions. [2020-04-18 15:22:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-04-18 15:22:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:22:57,405 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:22:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 3 times [2020-04-18 15:22:57,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:57,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898878235] [2020-04-18 15:22:57,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:57,469 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 15:22:57,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898878235] [2020-04-18 15:22:57,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:57,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:22:57,470 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:57,472 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:22:57,474 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:57,494 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:57,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:57,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:22:57,496 INFO L87 Difference]: Start difference. First operand 39 states and 64 transitions. Second operand 4 states. [2020-04-18 15:22:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:57,507 INFO L93 Difference]: Finished difference Result 39 states and 64 transitions. [2020-04-18 15:22:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-04-18 15:22:57,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:22:57,508 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1048393081] [2020-04-18 15:22:57,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:22:57,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:22:57,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1048393081] [2020-04-18 15:22:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:22:57,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:22:57,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:22:57,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:22:57,510 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 7 states. [2020-04-18 15:22:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:57,656 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-04-18 15:22:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 15:22:57,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:22:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:22:57,657 INFO L225 Difference]: With dead ends: 183 [2020-04-18 15:22:57,658 INFO L226 Difference]: Without dead ends: 143 [2020-04-18 15:22:57,658 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:22:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-04-18 15:22:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-04-18 15:22:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-04-18 15:22:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-04-18 15:22:57,666 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-04-18 15:22:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:22:57,666 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-04-18 15:22:57,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:22:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-04-18 15:22:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:22:57,690 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:57,691 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:57,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-04-18 15:22:57,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:57,692 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1475314353] [2020-04-18 15:22:57,692 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,694 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 82 transitions. [2020-04-18 15:22:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 15:22:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:22:57,695 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash 50235434, now seen corresponding path program 2 times [2020-04-18 15:22:57,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:57,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812759058] [2020-04-18 15:22:57,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:57,767 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 15:22:57,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812759058] [2020-04-18 15:22:57,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:57,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:57,768 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:57,769 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:57,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 15:22:57,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:57,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:57,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:57,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:22:57,791 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-04-18 15:22:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:57,912 INFO L93 Difference]: Finished difference Result 54 states and 95 transitions. [2020-04-18 15:22:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 95 transitions. [2020-04-18 15:22:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:22:57,913 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:22:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash 594610004, now seen corresponding path program 3 times [2020-04-18 15:22:57,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:57,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700939341] [2020-04-18 15:22:57,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:58,007 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 15:22:58,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700939341] [2020-04-18 15:22:58,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:58,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:22:58,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:58,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,013 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:22:58,013 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:58,068 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:22:58,069 INFO L87 Difference]: Start difference. First operand 54 states and 95 transitions. Second operand 4 states. [2020-04-18 15:22:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:58,110 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2020-04-18 15:22:58,110 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 105 transitions. [2020-04-18 15:22:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:22:58,110 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:22:58,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:58,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 4 times [2020-04-18 15:22:58,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:58,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567503970] [2020-04-18 15:22:58,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:58,182 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 15:22:58,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567503970] [2020-04-18 15:22:58,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:58,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:58,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:58,186 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,189 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 15:22:58,189 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:58,249 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:22:58,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:22:58,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:22:58,250 INFO L87 Difference]: Start difference. First operand 64 states and 105 transitions. Second operand 6 states. [2020-04-18 15:22:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:58,271 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2020-04-18 15:22:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 105 transitions. [2020-04-18 15:22:58,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:22:58,272 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1475314353] [2020-04-18 15:22:58,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:22:58,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:22:58,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1475314353] [2020-04-18 15:22:58,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:22:58,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:22:58,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:22:58,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:22:58,274 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 9 states. [2020-04-18 15:22:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:58,444 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-04-18 15:22:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 15:22:58,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-04-18 15:22:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:22:58,446 INFO L225 Difference]: With dead ends: 129 [2020-04-18 15:22:58,446 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 15:22:58,447 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:22:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 15:22:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 15:22:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 15:22:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-04-18 15:22:58,452 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-04-18 15:22:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:22:58,453 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-04-18 15:22:58,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:22:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-04-18 15:22:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:22:58,454 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:58,454 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:58,454 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:58,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-04-18 15:22:58,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:58,455 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [540075900] [2020-04-18 15:22:58,456 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,457 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 162 transitions. [2020-04-18 15:22:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 15:22:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:22:58,460 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:58,460 INFO L82 PathProgramCache]: Analyzing trace with hash -500571274, now seen corresponding path program 2 times [2020-04-18 15:22:58,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:58,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722578150] [2020-04-18 15:22:58,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:58,566 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 15:22:58,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722578150] [2020-04-18 15:22:58,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:58,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:58,567 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:58,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 15:22:58,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:58,594 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:58,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:22:58,595 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 5 states. [2020-04-18 15:22:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:58,647 INFO L93 Difference]: Finished difference Result 106 states and 221 transitions. [2020-04-18 15:22:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 221 transitions. [2020-04-18 15:22:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:22:58,648 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:22:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash 142536028, now seen corresponding path program 3 times [2020-04-18 15:22:58,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:58,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743398977] [2020-04-18 15:22:58,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:58,690 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 15:22:58,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743398977] [2020-04-18 15:22:58,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:58,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:22:58,692 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:58,693 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,696 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 15:22:58,697 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:58,717 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:58,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:58,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:22:58,718 INFO L87 Difference]: Start difference. First operand 106 states and 221 transitions. Second operand 4 states. [2020-04-18 15:22:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:58,744 INFO L93 Difference]: Finished difference Result 142 states and 275 transitions. [2020-04-18 15:22:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 275 transitions. [2020-04-18 15:22:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:22:58,745 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:22:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:58,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1420449816, now seen corresponding path program 4 times [2020-04-18 15:22:58,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:58,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300701336] [2020-04-18 15:22:58,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:58,787 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 15:22:58,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300701336] [2020-04-18 15:22:58,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:58,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:58,788 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:58,789 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 27 transitions. [2020-04-18 15:22:58,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:58,803 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:58,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:22:58,804 INFO L87 Difference]: Start difference. First operand 142 states and 275 transitions. Second operand 5 states. [2020-04-18 15:22:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:58,874 INFO L93 Difference]: Finished difference Result 148 states and 279 transitions. [2020-04-18 15:22:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 279 transitions. [2020-04-18 15:22:58,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:22:58,875 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:22:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 5 times [2020-04-18 15:22:58,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:58,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049602544] [2020-04-18 15:22:58,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:58,940 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 15:22:58,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049602544] [2020-04-18 15:22:58,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:58,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:22:58,943 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:58,945 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:58,947 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 23 transitions. [2020-04-18 15:22:58,947 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:58,963 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:58,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:22:58,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:22:58,964 INFO L87 Difference]: Start difference. First operand 148 states and 279 transitions. Second operand 6 states. [2020-04-18 15:22:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,013 INFO L93 Difference]: Finished difference Result 148 states and 279 transitions. [2020-04-18 15:22:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 279 transitions. [2020-04-18 15:22:59,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:22:59,014 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [540075900] [2020-04-18 15:22:59,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:22:59,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:22:59,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [540075900] [2020-04-18 15:22:59,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:22:59,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:22:59,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:22:59,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:22:59,019 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 9 states. [2020-04-18 15:22:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,149 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-04-18 15:22:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 15:22:59,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-04-18 15:22:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:22:59,150 INFO L225 Difference]: With dead ends: 93 [2020-04-18 15:22:59,150 INFO L226 Difference]: Without dead ends: 85 [2020-04-18 15:22:59,151 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:22:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-04-18 15:22:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-04-18 15:22:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-04-18 15:22:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-04-18 15:22:59,154 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-04-18 15:22:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:22:59,155 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-04-18 15:22:59,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:22:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-04-18 15:22:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,156 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:22:59,156 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:22:59,157 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:22:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-04-18 15:22:59,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:22:59,158 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1556278415] [2020-04-18 15:22:59,159 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,164 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 15:22:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:22:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,170 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:22:59,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,170 INFO L82 PathProgramCache]: Analyzing trace with hash -392200012, now seen corresponding path program 2 times [2020-04-18 15:22:59,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:59,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290835393] [2020-04-18 15:22:59,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:59,232 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 15:22:59,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290835393] [2020-04-18 15:22:59,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:59,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:59,233 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:59,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,244 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 117 transitions. [2020-04-18 15:22:59,244 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:59,263 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:59,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:22:59,263 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 15:22:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,316 INFO L93 Difference]: Finished difference Result 418 states and 1190 transitions. [2020-04-18 15:22:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1190 transitions. [2020-04-18 15:22:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,320 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:22:59,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1431673586, now seen corresponding path program 3 times [2020-04-18 15:22:59,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:59,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464077677] [2020-04-18 15:22:59,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:59,377 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 15:22:59,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464077677] [2020-04-18 15:22:59,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:59,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:22:59,380 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:59,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 78 transitions. [2020-04-18 15:22:59,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:59,411 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:22:59,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:59,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:22:59,412 INFO L87 Difference]: Start difference. First operand 418 states and 1190 transitions. Second operand 4 states. [2020-04-18 15:22:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,443 INFO L93 Difference]: Finished difference Result 598 states and 1610 transitions. [2020-04-18 15:22:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1610 transitions. [2020-04-18 15:22:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,448 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:22:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1692127022, now seen corresponding path program 4 times [2020-04-18 15:22:59,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:59,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825556269] [2020-04-18 15:22:59,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:59,501 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 15:22:59,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825556269] [2020-04-18 15:22:59,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:59,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:59,501 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:59,502 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 55 transitions. [2020-04-18 15:22:59,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:59,522 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:59,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:22:59,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:22:59,523 INFO L87 Difference]: Start difference. First operand 598 states and 1610 transitions. Second operand 5 states. [2020-04-18 15:22:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,589 INFO L93 Difference]: Finished difference Result 652 states and 1694 transitions. [2020-04-18 15:22:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1694 transitions. [2020-04-18 15:22:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,592 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:22:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash 659273086, now seen corresponding path program 5 times [2020-04-18 15:22:59,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:59,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295034679] [2020-04-18 15:22:59,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:59,639 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 15:22:59,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295034679] [2020-04-18 15:22:59,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:59,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:22:59,640 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:59,641 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 40 transitions. [2020-04-18 15:22:59,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:59,656 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:22:59,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:22:59,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:22:59,657 INFO L87 Difference]: Start difference. First operand 652 states and 1694 transitions. Second operand 6 states. [2020-04-18 15:22:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,740 INFO L93 Difference]: Finished difference Result 658 states and 1698 transitions. [2020-04-18 15:22:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1698 transitions. [2020-04-18 15:22:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,742 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:22:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,743 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 6 times [2020-04-18 15:22:59,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:59,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743847243] [2020-04-18 15:22:59,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:59,787 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 15:22:59,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743847243] [2020-04-18 15:22:59,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:59,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:22:59,788 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:59,790 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2020-04-18 15:22:59,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:22:59,808 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:22:59,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:22:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:22:59,809 INFO L87 Difference]: Start difference. First operand 658 states and 1698 transitions. Second operand 4 states. [2020-04-18 15:22:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:22:59,839 INFO L93 Difference]: Finished difference Result 1182 states and 2896 transitions. [2020-04-18 15:22:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2896 transitions. [2020-04-18 15:22:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:22:59,843 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:22:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:22:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 7 times [2020-04-18 15:22:59,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:22:59,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935961983] [2020-04-18 15:22:59,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:22:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:22:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:22:59,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935961983] [2020-04-18 15:22:59,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:22:59,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:22:59,960 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:22:59,962 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:22:59,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 100 transitions. [2020-04-18 15:22:59,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:23:00,114 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:23:00,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:23:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:23:00,115 INFO L87 Difference]: Start difference. First operand 1182 states and 2896 transitions. Second operand 7 states. [2020-04-18 15:23:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:23:00,184 INFO L93 Difference]: Finished difference Result 1956 states and 4542 transitions. [2020-04-18 15:23:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 4542 transitions. [2020-04-18 15:23:00,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:23:00,192 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1556278415] [2020-04-18 15:23:00,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:23:00,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:23:00,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1556278415] [2020-04-18 15:23:00,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:23:00,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:23:00,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:23:00,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:23:00,196 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 14 states. [2020-04-18 15:23:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:23:00,823 INFO L93 Difference]: Finished difference Result 130 states and 257 transitions. [2020-04-18 15:23:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 15:23:00,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-04-18 15:23:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:23:00,824 INFO L225 Difference]: With dead ends: 130 [2020-04-18 15:23:00,824 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:23:00,825 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=2178, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 15:23:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:23:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:23:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:23:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:23:00,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:23:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:23:00,826 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:23:00,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:23:00,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:23:00,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:23:00,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:23:00 BasicIcfg [2020-04-18 15:23:00,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:23:00,831 INFO L168 Benchmark]: Toolchain (without parser) took 7673.68 ms. Allocated memory was 145.8 MB in the beginning and 284.2 MB in the end (delta: 138.4 MB). Free memory was 102.2 MB in the beginning and 127.2 MB in the end (delta: -25.0 MB). Peak memory consumption was 113.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:23:00,832 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:23:00,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.69 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 157.1 MB in the end (delta: -56.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:23:00,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.60 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:23:00,834 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 202.9 MB. Free memory was 155.1 MB in the beginning and 154.2 MB in the end (delta: 973.4 kB). Peak memory consumption was 973.4 kB. Max. memory is 7.1 GB. [2020-04-18 15:23:00,834 INFO L168 Benchmark]: RCFGBuilder took 468.73 ms. Allocated memory is still 202.9 MB. Free memory was 153.2 MB in the beginning and 131.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:23:00,835 INFO L168 Benchmark]: TraceAbstraction took 6378.72 ms. Allocated memory was 202.9 MB in the beginning and 284.2 MB in the end (delta: 81.3 MB). Free memory was 131.1 MB in the beginning and 127.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:23:00,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.69 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 157.1 MB in the end (delta: -56.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.60 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.01 ms. Allocated memory is still 202.9 MB. Free memory was 155.1 MB in the beginning and 154.2 MB in the end (delta: 973.4 kB). Peak memory consumption was 973.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 468.73 ms. Allocated memory is still 202.9 MB. Free memory was 153.2 MB in the beginning and 131.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6378.72 ms. Allocated memory was 202.9 MB in the beginning and 284.2 MB in the end (delta: 81.3 MB). Free memory was 131.1 MB in the beginning and 127.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 156 SDtfs, 396 SDslu, 462 SDs, 0 SdLazy, 372 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...