/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/safe035_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:44:23,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:44:23,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:44:23,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:44:23,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:44:23,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:44:23,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:44:23,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:44:23,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:44:23,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:44:23,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:44:23,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:44:23,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:44:23,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:44:23,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:44:23,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:44:23,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:44:23,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:44:23,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:44:23,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:44:23,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:44:23,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:44:23,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:44:23,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:44:23,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:44:23,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:44:23,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:44:23,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:44:23,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:44:23,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:44:23,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:44:23,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:44:23,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:44:23,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:44:23,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:44:23,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:44:23,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:44:23,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:44:23,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:44:23,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:44:23,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:44:23,542 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 15:44:23,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:44:23,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:44:23,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:44:23,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:44:23,558 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:44:23,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:44:23,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:44:23,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:44:23,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:44:23,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:44:23,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:44:23,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:44:23,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:44:23,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:44:23,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:44:23,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:44:23,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:44:23,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:44:23,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:44:23,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:44:23,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:44:23,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:44:23,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:44:23,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:44:23,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:44:23,562 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:44:23,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:44:23,562 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:44:23,563 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:44:23,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:44:23,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:44:23,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:44:23,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:44:23,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:44:23,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:44:23,853 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:44:23,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2020-04-18 15:44:23,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f4cb7ab/87e336c2016442cc8b6c1f30edc666c3/FLAG64f1074eb [2020-04-18 15:44:24,532 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:44:24,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2020-04-18 15:44:24,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f4cb7ab/87e336c2016442cc8b6c1f30edc666c3/FLAG64f1074eb [2020-04-18 15:44:24,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7f4cb7ab/87e336c2016442cc8b6c1f30edc666c3 [2020-04-18 15:44:24,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:44:24,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:44:24,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:44:24,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:44:24,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:44:24,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:44:24" (1/1) ... [2020-04-18 15:44:24,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18164ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:24, skipping insertion in model container [2020-04-18 15:44:24,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:44:24" (1/1) ... [2020-04-18 15:44:24,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:44:24,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:44:25,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:44:25,406 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:44:25,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:44:25,534 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:44:25,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25 WrapperNode [2020-04-18 15:44:25,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:44:25,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:44:25,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:44:25,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:44:25,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:44:25,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:44:25,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:44:25,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:44:25,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (1/1) ... [2020-04-18 15:44:25,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:44:25,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:44:25,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:44:25,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:44:25,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (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 15:44:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:44:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:44:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:44:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:44:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:44:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:44:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:44:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:44:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:44:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:44:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:44:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:44:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:44:25,704 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 15:44:26,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:44:26,103 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:44:26,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:44:26 BoogieIcfgContainer [2020-04-18 15:44:26,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:44:26,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:44:26,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:44:26,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:44:26,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:44:24" (1/3) ... [2020-04-18 15:44:26,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9c508b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:44:26, skipping insertion in model container [2020-04-18 15:44:26,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:25" (2/3) ... [2020-04-18 15:44:26,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9c508b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:44:26, skipping insertion in model container [2020-04-18 15:44:26,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:44:26" (3/3) ... [2020-04-18 15:44:26,116 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_rmo.opt.i [2020-04-18 15:44:26,125 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:44:26,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:44:26,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:44:26,134 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:44:26,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,165 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,165 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,166 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,166 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,167 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,168 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,168 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,168 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,169 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,169 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,170 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,171 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,172 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,172 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,179 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,179 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,186 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,187 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,187 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,187 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,191 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,191 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,191 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,192 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:26,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:44:26,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:44:26,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:44:26,223 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:44:26,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:44:26,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:44:26,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:44:26,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:44:26,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:44:26,239 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:26,241 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:26,283 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:44:26,283 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:44:26,288 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:44:26,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:26,316 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:44:26,317 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:44:26,318 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:44:26,320 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:44:26,321 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:44:27,719 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:44:27,879 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-18 15:44:28,005 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-18 15:44:28,006 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 15:44:28,011 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:44:28,068 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:44:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:44:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:44:28,087 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:28,089 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:28,089 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-18 15:44:28,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:28,109 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [715346379] [2020-04-18 15:44:28,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,145 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:44:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:44:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:44:28,150 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 2 times [2020-04-18 15:44:28,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:28,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555665338] [2020-04-18 15:44:28,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:28,405 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 15:44:28,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555665338] [2020-04-18 15:44:28,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:28,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:44:28,408 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:28,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,412 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:44:28,412 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:28,420 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,427 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:44:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,432 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:44:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:44:28,432 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:28,433 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [715346379] [2020-04-18 15:44:28,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:28,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:44:28,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [715346379] [2020-04-18 15:44:28,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:44:28,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:28,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,441 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:44:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,479 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-18 15:44:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:44:28,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:44:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:28,518 INFO L225 Difference]: With dead ends: 294 [2020-04-18 15:44:28,518 INFO L226 Difference]: Without dead ends: 230 [2020-04-18 15:44:28,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-18 15:44:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-18 15:44:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-18 15:44:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-18 15:44:28,608 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-18 15:44:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:28,609 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-18 15:44:28,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:44:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-18 15:44:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:44:28,610 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:28,611 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:28,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,611 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-18 15:44:28,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:28,612 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [917619852] [2020-04-18 15:44:28,612 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 15:44:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 15:44:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:44:28,615 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,615 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 2 times [2020-04-18 15:44:28,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:28,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658257235] [2020-04-18 15:44:28,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:28,718 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 15:44:28,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658257235] [2020-04-18 15:44:28,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:28,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:44:28,720 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:28,720 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 15:44:28,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:28,730 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:28,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:28,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,731 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 15:44:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,732 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 15:44:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 15:44:28,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:28,733 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [917619852] [2020-04-18 15:44:28,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:28,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:44:28,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [917619852] [2020-04-18 15:44:28,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:44:28,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:28,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,735 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-18 15:44:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,752 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 15:44:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:44:28,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:44:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:28,755 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:44:28,755 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:44:28,757 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:44:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:44:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:44:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 15:44:28,786 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 15:44:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:28,786 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 15:44:28,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:44:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 15:44:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:28,790 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:28,791 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:28,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,793 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-18 15:44:28,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:28,794 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2061737429] [2020-04-18 15:44:28,794 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,795 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:44:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 15:44:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:28,796 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:28,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 2 times [2020-04-18 15:44:28,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:28,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142150296] [2020-04-18 15:44:28,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:28,846 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 15:44:28,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142150296] [2020-04-18 15:44:28,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:28,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:28,847 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:28,848 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,849 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 15:44:28,849 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:28,853 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:28,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:28,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:28,854 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 15:44:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,861 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 15:44:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 15:44:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:28,862 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash -53993097, now seen corresponding path program 3 times [2020-04-18 15:44:28,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:28,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346882155] [2020-04-18 15:44:28,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:28,914 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 15:44:28,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346882155] [2020-04-18 15:44:28,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:28,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:28,915 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:28,916 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:44:28,917 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:28,922 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:28,923 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-04-18 15:44:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,937 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 15:44:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 15:44:28,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:28,938 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2061737429] [2020-04-18 15:44:28,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:28,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:44:28,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2061737429] [2020-04-18 15:44:28,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:44:28,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:28,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:28,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:28,940 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 15:44:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:28,968 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-18 15:44:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:44:28,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:44:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:28,971 INFO L225 Difference]: With dead ends: 266 [2020-04-18 15:44:28,971 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 15:44:28,971 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 15:44:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 15:44:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 15:44:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-18 15:44:28,982 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-18 15:44:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:28,983 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-18 15:44:28,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:44:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-18 15:44:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:28,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:28,984 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:28,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-18 15:44:28,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:28,985 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1191904895] [2020-04-18 15:44:28,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:28,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:44:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:44:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:28,988 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:28,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1335752706, now seen corresponding path program 2 times [2020-04-18 15:44:28,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:28,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206751393] [2020-04-18 15:44:28,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,024 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 15:44:29,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206751393] [2020-04-18 15:44:29,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,025 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,026 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:44:29,029 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,036 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:29,036 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:44:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,046 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2020-04-18 15:44:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-04-18 15:44:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:29,047 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1336319106, now seen corresponding path program 3 times [2020-04-18 15:44:29,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168206727] [2020-04-18 15:44:29,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,092 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 15:44:29,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168206727] [2020-04-18 15:44:29,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,093 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,100 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 15:44:29,100 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,106 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:29,106 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand 3 states. [2020-04-18 15:44:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,111 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 15:44:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 15:44:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:29,113 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:29,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 4 times [2020-04-18 15:44:29,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128532750] [2020-04-18 15:44:29,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,213 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 15:44:29,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128532750] [2020-04-18 15:44:29,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,214 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,216 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:44:29,218 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,241 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:29,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:29,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:44:29,242 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 4 states. [2020-04-18 15:44:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,257 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 15:44:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 15:44:29,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:29,260 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1191904895] [2020-04-18 15:44:29,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:29,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:44:29,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1191904895] [2020-04-18 15:44:29,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:44:29,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:29,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:29,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:44:29,263 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 6 states. [2020-04-18 15:44:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,489 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-18 15:44:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:44:29,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:44:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:29,491 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:44:29,491 INFO L226 Difference]: Without dead ends: 113 [2020-04-18 15:44:29,492 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:44:29,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-18 15:44:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-18 15:44:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-18 15:44:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-18 15:44:29,499 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-18 15:44:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:29,499 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-18 15:44:29,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:44:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-18 15:44:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:29,500 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:29,500 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:29,500 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,501 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-18 15:44:29,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:29,501 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [961608198] [2020-04-18 15:44:29,502 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 15:44:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:44:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:29,504 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1541327102, now seen corresponding path program 2 times [2020-04-18 15:44:29,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124349943] [2020-04-18 15:44:29,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,531 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 15:44:29,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124349943] [2020-04-18 15:44:29,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,533 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,534 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,536 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 15:44:29,536 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,541 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:29,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:29,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:29,542 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-04-18 15:44:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,548 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2020-04-18 15:44:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-04-18 15:44:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:29,549 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1523780462, now seen corresponding path program 3 times [2020-04-18 15:44:29,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74019618] [2020-04-18 15:44:29,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,576 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 15:44:29,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74019618] [2020-04-18 15:44:29,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,579 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:44:29,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,586 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:29,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:29,587 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-04-18 15:44:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,592 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 15:44:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 15:44:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:29,592 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 4 times [2020-04-18 15:44:29,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157561161] [2020-04-18 15:44:29,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,638 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 15:44:29,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157561161] [2020-04-18 15:44:29,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:29,640 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,640 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,643 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:44:29,643 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,665 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:29,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:44:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:44:29,666 INFO L87 Difference]: Start difference. First operand 55 states and 84 transitions. Second operand 5 states. [2020-04-18 15:44:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,694 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 15:44:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 15:44:29,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:29,695 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [961608198] [2020-04-18 15:44:29,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:29,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:44:29,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [961608198] [2020-04-18 15:44:29,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:44:29,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:29,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:44:29,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:44:29,697 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 7 states. [2020-04-18 15:44:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,906 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-18 15:44:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 15:44:29,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:44:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:29,907 INFO L225 Difference]: With dead ends: 111 [2020-04-18 15:44:29,908 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 15:44:29,908 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:44:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 15:44:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 15:44:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 15:44:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-18 15:44:29,912 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-18 15:44:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:29,913 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-18 15:44:29,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:44:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-18 15:44:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:29,914 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:29,914 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:29,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-18 15:44:29,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:29,915 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [101235210] [2020-04-18 15:44:29,915 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 134 transitions. [2020-04-18 15:44:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 15:44:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:29,918 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash -605969466, now seen corresponding path program 2 times [2020-04-18 15:44:29,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191512598] [2020-04-18 15:44:29,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,947 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 15:44:29,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191512598] [2020-04-18 15:44:29,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,948 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,949 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,952 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 15:44:29,953 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:29,957 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:44:29,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:29,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:29,958 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 15:44:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:29,965 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2020-04-18 15:44:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 205 transitions. [2020-04-18 15:44:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:29,966 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:29,967 INFO L82 PathProgramCache]: Analyzing trace with hash -588422826, now seen corresponding path program 3 times [2020-04-18 15:44:29,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:29,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868228121] [2020-04-18 15:44:29,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:29,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868228121] [2020-04-18 15:44:29,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:29,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:29,992 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:29,993 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:29,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 15:44:29,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,001 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:30,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:30,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:30,002 INFO L87 Difference]: Start difference. First operand 105 states and 205 transitions. Second operand 3 states. [2020-04-18 15:44:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,005 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 15:44:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 15:44:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:30,006 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 4 times [2020-04-18 15:44:30,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:30,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446141753] [2020-04-18 15:44:30,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:30,067 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 15:44:30,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446141753] [2020-04-18 15:44:30,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:30,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:44:30,068 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:30,070 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,072 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 15:44:30,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,104 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:30,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:44:30,105 INFO L87 Difference]: Start difference. First operand 119 states and 222 transitions. Second operand 6 states. [2020-04-18 15:44:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,183 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 15:44:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 15:44:30,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:30,184 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [101235210] [2020-04-18 15:44:30,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:30,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:44:30,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [101235210] [2020-04-18 15:44:30,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:44:30,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:44:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:44:30,186 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 8 states. [2020-04-18 15:44:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,381 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-18 15:44:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:44:30,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 15:44:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:30,382 INFO L225 Difference]: With dead ends: 75 [2020-04-18 15:44:30,382 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 15:44:30,383 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:44:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 15:44:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-18 15:44:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-18 15:44:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-18 15:44:30,386 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-18 15:44:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:30,387 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-18 15:44:30,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:44:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-18 15:44:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:30,388 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:30,388 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:30,388 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-18 15:44:30,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:30,389 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [220737830] [2020-04-18 15:44:30,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,393 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:44:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:44:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:30,397 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,397 INFO L82 PathProgramCache]: Analyzing trace with hash -689704600, now seen corresponding path program 2 times [2020-04-18 15:44:30,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:30,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87859188] [2020-04-18 15:44:30,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:30,439 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 15:44:30,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87859188] [2020-04-18 15:44:30,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:30,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:30,440 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:30,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 90 transitions. [2020-04-18 15:44:30,449 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,454 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:30,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:30,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:30,455 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:44:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,467 INFO L93 Difference]: Finished difference Result 390 states and 1057 transitions. [2020-04-18 15:44:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1057 transitions. [2020-04-18 15:44:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:30,471 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,472 INFO L82 PathProgramCache]: Analyzing trace with hash 595608656, now seen corresponding path program 3 times [2020-04-18 15:44:30,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:30,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574351827] [2020-04-18 15:44:30,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:30,498 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 15:44:30,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574351827] [2020-04-18 15:44:30,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:30,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:30,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:30,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 76 transitions. [2020-04-18 15:44:30,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,510 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:30,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:30,513 INFO L87 Difference]: Start difference. First operand 390 states and 1057 transitions. Second operand 3 states. [2020-04-18 15:44:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,519 INFO L93 Difference]: Finished difference Result 446 states and 1167 transitions. [2020-04-18 15:44:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1167 transitions. [2020-04-18 15:44:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:30,521 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash -901910694, now seen corresponding path program 4 times [2020-04-18 15:44:30,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:30,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627835129] [2020-04-18 15:44:30,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:30,555 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 15:44:30,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627835129] [2020-04-18 15:44:30,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:30,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:30,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:30,557 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,566 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 63 transitions. [2020-04-18 15:44:30,567 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,588 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:44:30,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:30,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:44:30,589 INFO L87 Difference]: Start difference. First operand 446 states and 1167 transitions. Second operand 4 states. [2020-04-18 15:44:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,613 INFO L93 Difference]: Finished difference Result 638 states and 1577 transitions. [2020-04-18 15:44:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1577 transitions. [2020-04-18 15:44:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:30,616 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:44:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,616 INFO L82 PathProgramCache]: Analyzing trace with hash -901846014, now seen corresponding path program 5 times [2020-04-18 15:44:30,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:30,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152474111] [2020-04-18 15:44:30,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:30,670 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 15:44:30,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152474111] [2020-04-18 15:44:30,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:30,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:44:30,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:30,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,678 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 52 transitions. [2020-04-18 15:44:30,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,719 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:44:30,720 INFO L87 Difference]: Start difference. First operand 638 states and 1577 transitions. Second operand 6 states. [2020-04-18 15:44:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,829 INFO L93 Difference]: Finished difference Result 644 states and 1580 transitions. [2020-04-18 15:44:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1580 transitions. [2020-04-18 15:44:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:30,831 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:44:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 6 times [2020-04-18 15:44:30,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:30,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004385082] [2020-04-18 15:44:30,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:30,865 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 15:44:30,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004385082] [2020-04-18 15:44:30,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:30,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:30,866 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:30,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:30,872 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 15:44:30,873 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:30,955 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:44:30,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:44:30,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:44:30,956 INFO L87 Difference]: Start difference. First operand 644 states and 1580 transitions. Second operand 5 states. [2020-04-18 15:44:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:30,994 INFO L93 Difference]: Finished difference Result 1048 states and 2378 transitions. [2020-04-18 15:44:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 2378 transitions. [2020-04-18 15:44:30,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:30,998 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [220737830] [2020-04-18 15:44:30,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:30,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:44:30,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [220737830] [2020-04-18 15:44:30,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:44:31,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:44:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:44:31,001 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 13 states. [2020-04-18 15:44:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:31,892 INFO L93 Difference]: Finished difference Result 103 states and 198 transitions. [2020-04-18 15:44:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-18 15:44:31,893 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-04-18 15:44:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:31,893 INFO L225 Difference]: With dead ends: 103 [2020-04-18 15:44:31,893 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:44:31,895 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=655, Invalid=2767, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 15:44:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:44:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:44:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:44:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:44:31,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:44:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:31,896 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:44:31,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:44:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:44:31,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:31,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:44:31 BasicIcfg [2020-04-18 15:44:31,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:44:31,901 INFO L168 Benchmark]: Toolchain (without parser) took 7074.67 ms. Allocated memory was 137.4 MB in the beginning and 286.8 MB in the end (delta: 149.4 MB). Free memory was 99.1 MB in the beginning and 155.0 MB in the end (delta: -55.9 MB). Peak memory consumption was 93.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,902 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.47 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 97.1 MB in the beginning and 159.5 MB in the end (delta: -62.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,904 INFO L168 Benchmark]: Boogie Preprocessor took 28.65 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 155.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,905 INFO L168 Benchmark]: RCFGBuilder took 486.09 ms. Allocated memory is still 202.9 MB. Free memory was 155.3 MB in the beginning and 133.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,906 INFO L168 Benchmark]: TraceAbstraction took 5791.29 ms. Allocated memory was 202.9 MB in the beginning and 286.8 MB in the end (delta: 83.9 MB). Free memory was 133.4 MB in the beginning and 155.0 MB in the end (delta: -21.6 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:31,909 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.47 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 97.1 MB in the beginning and 159.5 MB in the end (delta: -62.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.65 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 155.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.09 ms. Allocated memory is still 202.9 MB. Free memory was 155.3 MB in the beginning and 133.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5791.29 ms. Allocated memory was 202.9 MB in the beginning and 286.8 MB in the end (delta: 83.9 MB). Free memory was 133.4 MB in the beginning and 155.0 MB in the end (delta: -21.6 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 132 SDtfs, 233 SDslu, 298 SDs, 0 SdLazy, 495 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...