/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:52:35,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:52:35,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:52:35,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:52:35,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:52:35,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:52:35,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:52:35,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:52:35,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:52:35,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:52:35,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:52:35,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:52:35,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:52:35,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:52:35,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:52:35,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:52:35,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:52:35,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:52:35,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:52:35,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:52:35,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:52:35,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:52:35,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:52:35,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:52:35,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:52:35,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:52:35,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:52:35,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:52:35,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:52:35,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:52:35,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:52:35,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:52:35,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:52:35,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:52:35,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:52:35,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:52:35,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:52:35,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:52:35,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:52:35,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:52:35,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:52:35,702 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-NoLbe-McrStrategy.epf [2020-04-18 19:52:35,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:52:35,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:52:35,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:52:35,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:52:35,730 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:52:35,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:52:35,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:52:35,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:52:35,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:52:35,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:52:35,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:52:35,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:52:35,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:52:35,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:52:35,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:52:35,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:52:35,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:52:35,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:52:35,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:52:35,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:52:35,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:52:35,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:52:35,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:52:35,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:52:35,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:52:35,736 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:52:35,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:52:35,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:52:35,737 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:52:35,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:52:35,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:52:36,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:52:36,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:52:36,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:52:36,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:52:36,085 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:52:36,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2020-04-18 19:52:36,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcd1d19c/281c5c8bbbbd4dd3801969070c78f6a6/FLAG9a7279a6c [2020-04-18 19:52:36,727 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:52:36,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2020-04-18 19:52:36,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcd1d19c/281c5c8bbbbd4dd3801969070c78f6a6/FLAG9a7279a6c [2020-04-18 19:52:36,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcd1d19c/281c5c8bbbbd4dd3801969070c78f6a6 [2020-04-18 19:52:36,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:52:37,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:52:37,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:52:37,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:52:37,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:52:37,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:52:36" (1/1) ... [2020-04-18 19:52:37,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ddb5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37, skipping insertion in model container [2020-04-18 19:52:37,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:52:36" (1/1) ... [2020-04-18 19:52:37,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:52:37,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:52:37,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:52:37,580 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:52:37,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:52:37,713 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:52:37,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37 WrapperNode [2020-04-18 19:52:37,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:52:37,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:52:37,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:52:37,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:52:37,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:52:37,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:52:37,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:52:37,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:52:37,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (1/1) ... [2020-04-18 19:52:37,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:52:37,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:52:37,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:52:37,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:52:37,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (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 19:52:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:52:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:52:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:52:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:52:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:52:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:52:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:52:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:52:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:52:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:52:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 19:52:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 19:52:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:52:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:52:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:52:37,875 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 19:52:38,282 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:52:38,282 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:52:38,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:52:38 BoogieIcfgContainer [2020-04-18 19:52:38,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:52:38,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:52:38,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:52:38,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:52:38,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:52:36" (1/3) ... [2020-04-18 19:52:38,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f436f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:52:38, skipping insertion in model container [2020-04-18 19:52:38,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:52:37" (2/3) ... [2020-04-18 19:52:38,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f436f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:52:38, skipping insertion in model container [2020-04-18 19:52:38,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:52:38" (3/3) ... [2020-04-18 19:52:38,296 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2020-04-18 19:52:38,306 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:52:38,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:52:38,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:52:38,314 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:52:38,345 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,345 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,345 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,346 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,346 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,346 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,347 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,347 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,347 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,348 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,348 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,348 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,349 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,349 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,349 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,350 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,351 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,351 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,351 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,352 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,352 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,353 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,357 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,358 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,358 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,358 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,364 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,364 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,364 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,365 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,368 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,368 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,368 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,368 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,373 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,374 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,374 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,374 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:52:38,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 19:52:38,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:52:38,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:52:38,422 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:52:38,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:52:38,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:52:38,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:52:38,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:52:38,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:52:38,437 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 19:52:44,175 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47253 states. [2020-04-18 19:52:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 47253 states. [2020-04-18 19:52:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:52:44,254 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:44,255 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:44,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:44,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1315035169, now seen corresponding path program 1 times [2020-04-18 19:52:44,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:44,271 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [826736671] [2020-04-18 19:52:44,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:44,305 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-04-18 19:52:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 19:52:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:52:44,309 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:44,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1315035169, now seen corresponding path program 2 times [2020-04-18 19:52:44,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:44,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238379111] [2020-04-18 19:52:44,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:44,858 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 19:52:44,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238379111] [2020-04-18 19:52:44,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:44,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:44,862 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:44,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:44,874 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-04-18 19:52:44,874 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:44,945 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:52:44,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:44,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:52:44,952 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 7 states. [2020-04-18 19:52:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:45,036 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2020-04-18 19:52:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2020-04-18 19:52:45,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:45,037 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [826736671] [2020-04-18 19:52:45,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:45,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:52:45,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [826736671] [2020-04-18 19:52:45,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:52:45,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:52:45,046 INFO L87 Difference]: Start difference. First operand 47253 states. Second operand 7 states. [2020-04-18 19:52:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:45,951 INFO L93 Difference]: Finished difference Result 66405 states and 285205 transitions. [2020-04-18 19:52:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:52:45,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 19:52:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:46,175 INFO L225 Difference]: With dead ends: 66405 [2020-04-18 19:52:46,175 INFO L226 Difference]: Without dead ends: 21297 [2020-04-18 19:52:46,177 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:52:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21297 states. [2020-04-18 19:52:48,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21297 to 21297. [2020-04-18 19:52:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21297 states. [2020-04-18 19:52:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21297 states to 21297 states and 89713 transitions. [2020-04-18 19:52:48,941 INFO L78 Accepts]: Start accepts. Automaton has 21297 states and 89713 transitions. Word has length 41 [2020-04-18 19:52:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:48,943 INFO L479 AbstractCegarLoop]: Abstraction has 21297 states and 89713 transitions. [2020-04-18 19:52:48,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:52:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 21297 states and 89713 transitions. [2020-04-18 19:52:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:52:48,983 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:48,983 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:48,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:48,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:48,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1369284514, now seen corresponding path program 1 times [2020-04-18 19:52:48,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:48,985 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2140020347] [2020-04-18 19:52:48,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:48,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 139 transitions. [2020-04-18 19:52:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-04-18 19:52:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:52:49,001 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:49,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1369284514, now seen corresponding path program 2 times [2020-04-18 19:52:49,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:49,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518903798] [2020-04-18 19:52:49,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:49,275 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 19:52:49,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518903798] [2020-04-18 19:52:49,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:49,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:49,277 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:49,282 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:49,303 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 115 transitions. [2020-04-18 19:52:49,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:49,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:52:49,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:49,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:52:49,369 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 7 states. [2020-04-18 19:52:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:49,532 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2020-04-18 19:52:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2020-04-18 19:52:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:52:49,533 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:49,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1012700406, now seen corresponding path program 3 times [2020-04-18 19:52:49,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:49,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049515965] [2020-04-18 19:52:49,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:49,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049515965] [2020-04-18 19:52:49,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:49,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:49,733 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:49,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:49,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 73 states and 101 transitions. [2020-04-18 19:52:49,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:49,798 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:52:49,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:49,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:52:49,799 INFO L87 Difference]: Start difference. First operand 98 states and 144 transitions. Second operand 7 states. [2020-04-18 19:52:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:49,933 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2020-04-18 19:52:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2020-04-18 19:52:49,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:49,934 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2140020347] [2020-04-18 19:52:49,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:49,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:52:49,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2140020347] [2020-04-18 19:52:49,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:52:49,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:49,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:49,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:52:49,937 INFO L87 Difference]: Start difference. First operand 21297 states and 89713 transitions. Second operand 8 states. [2020-04-18 19:52:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:50,723 INFO L93 Difference]: Finished difference Result 29697 states and 124283 transitions. [2020-04-18 19:52:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:52:50,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-04-18 19:52:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:50,811 INFO L225 Difference]: With dead ends: 29697 [2020-04-18 19:52:50,812 INFO L226 Difference]: Without dead ends: 14857 [2020-04-18 19:52:50,813 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:52:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2020-04-18 19:52:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 14857. [2020-04-18 19:52:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14857 states. [2020-04-18 19:52:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 61547 transitions. [2020-04-18 19:52:51,379 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 61547 transitions. Word has length 43 [2020-04-18 19:52:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:51,380 INFO L479 AbstractCegarLoop]: Abstraction has 14857 states and 61547 transitions. [2020-04-18 19:52:51,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:52:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 61547 transitions. [2020-04-18 19:52:51,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:52:51,404 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:51,405 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:51,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:51,406 INFO L82 PathProgramCache]: Analyzing trace with hash 2075664305, now seen corresponding path program 1 times [2020-04-18 19:52:51,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:51,406 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2058934118] [2020-04-18 19:52:51,408 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:51,412 INFO L259 McrAutomatonBuilder]: Finished intersection with 170 states and 341 transitions. [2020-04-18 19:52:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-04-18 19:52:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:52:51,414 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:51,414 INFO L82 PathProgramCache]: Analyzing trace with hash 945711235, now seen corresponding path program 2 times [2020-04-18 19:52:51,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:51,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286348110] [2020-04-18 19:52:51,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:51,567 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 19:52:51,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286348110] [2020-04-18 19:52:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:51,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:51,569 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:51,573 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:51,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 205 transitions. [2020-04-18 19:52:51,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:51,642 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:52:51,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:51,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:52:51,642 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 7 states. [2020-04-18 19:52:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:51,700 INFO L93 Difference]: Finished difference Result 170 states and 341 transitions. [2020-04-18 19:52:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 341 transitions. [2020-04-18 19:52:51,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:51,701 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2058934118] [2020-04-18 19:52:51,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:51,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:52:51,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2058934118] [2020-04-18 19:52:51,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:52:51,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:51,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:51,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:52:51,703 INFO L87 Difference]: Start difference. First operand 14857 states and 61547 transitions. Second operand 7 states. [2020-04-18 19:52:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:51,930 INFO L93 Difference]: Finished difference Result 16777 states and 68883 transitions. [2020-04-18 19:52:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:52:51,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 19:52:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:53,044 INFO L225 Difference]: With dead ends: 16777 [2020-04-18 19:52:53,044 INFO L226 Difference]: Without dead ends: 13417 [2020-04-18 19:52:53,046 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:52:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13417 states. [2020-04-18 19:52:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13417 to 13417. [2020-04-18 19:52:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13417 states. [2020-04-18 19:52:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13417 states to 13417 states and 55235 transitions. [2020-04-18 19:52:53,451 INFO L78 Accepts]: Start accepts. Automaton has 13417 states and 55235 transitions. Word has length 45 [2020-04-18 19:52:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:53,452 INFO L479 AbstractCegarLoop]: Abstraction has 13417 states and 55235 transitions. [2020-04-18 19:52:53,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:52:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13417 states and 55235 transitions. [2020-04-18 19:52:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:52:53,479 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:53,479 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:53,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:53,479 INFO L82 PathProgramCache]: Analyzing trace with hash -698696080, now seen corresponding path program 1 times [2020-04-18 19:52:53,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:53,480 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [148218718] [2020-04-18 19:52:53,482 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:53,491 INFO L259 McrAutomatonBuilder]: Finished intersection with 428 states and 1167 transitions. [2020-04-18 19:52:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states. [2020-04-18 19:52:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:52:53,495 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:53,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:53,496 INFO L82 PathProgramCache]: Analyzing trace with hash -593359196, now seen corresponding path program 2 times [2020-04-18 19:52:53,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:53,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119449752] [2020-04-18 19:52:53,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:53,630 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 19:52:53,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119449752] [2020-04-18 19:52:53,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:53,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:53,632 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:53,637 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:53,673 INFO L259 McrAutomatonBuilder]: Finished intersection with 242 states and 563 transitions. [2020-04-18 19:52:53,673 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:53,829 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:52:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:52:53,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:52:53,830 INFO L87 Difference]: Start difference. First operand 428 states. Second operand 10 states. [2020-04-18 19:52:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:54,377 INFO L93 Difference]: Finished difference Result 612 states and 1522 transitions. [2020-04-18 19:52:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1522 transitions. [2020-04-18 19:52:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:52:54,378 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:54,379 INFO L82 PathProgramCache]: Analyzing trace with hash -698696080, now seen corresponding path program 3 times [2020-04-18 19:52:54,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:54,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806663087] [2020-04-18 19:52:54,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:54,521 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 19:52:54,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806663087] [2020-04-18 19:52:54,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:54,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:54,523 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:54,530 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:54,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 210 states and 491 transitions. [2020-04-18 19:52:54,566 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:54,647 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:52:54,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:52:54,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:52:54,648 INFO L87 Difference]: Start difference. First operand 612 states and 1522 transitions. Second operand 10 states. [2020-04-18 19:52:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:54,771 INFO L93 Difference]: Finished difference Result 612 states and 1522 transitions. [2020-04-18 19:52:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1522 transitions. [2020-04-18 19:52:54,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:54,772 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [148218718] [2020-04-18 19:52:54,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:54,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:52:54,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [148218718] [2020-04-18 19:52:54,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:52:54,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:54,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:52:54,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:52:54,774 INFO L87 Difference]: Start difference. First operand 13417 states and 55235 transitions. Second operand 13 states. [2020-04-18 19:52:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:56,017 INFO L93 Difference]: Finished difference Result 33017 states and 133299 transitions. [2020-04-18 19:52:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 19:52:56,019 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-04-18 19:52:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:56,072 INFO L225 Difference]: With dead ends: 33017 [2020-04-18 19:52:56,072 INFO L226 Difference]: Without dead ends: 17577 [2020-04-18 19:52:56,073 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=604, Invalid=1846, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:52:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17577 states. [2020-04-18 19:52:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17577 to 12585. [2020-04-18 19:52:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12585 states. [2020-04-18 19:52:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12585 states to 12585 states and 50805 transitions. [2020-04-18 19:52:56,537 INFO L78 Accepts]: Start accepts. Automaton has 12585 states and 50805 transitions. Word has length 47 [2020-04-18 19:52:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:56,538 INFO L479 AbstractCegarLoop]: Abstraction has 12585 states and 50805 transitions. [2020-04-18 19:52:56,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:52:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12585 states and 50805 transitions. [2020-04-18 19:52:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:56,565 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:56,566 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:56,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:56,566 INFO L82 PathProgramCache]: Analyzing trace with hash 233478989, now seen corresponding path program 1 times [2020-04-18 19:52:56,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:56,566 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [870022280] [2020-04-18 19:52:56,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:56,586 INFO L259 McrAutomatonBuilder]: Finished intersection with 1226 states and 4225 transitions. [2020-04-18 19:52:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states. [2020-04-18 19:52:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:56,599 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:56,599 INFO L82 PathProgramCache]: Analyzing trace with hash -597904221, now seen corresponding path program 2 times [2020-04-18 19:52:56,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:56,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392446306] [2020-04-18 19:52:56,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:56,729 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 19:52:56,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392446306] [2020-04-18 19:52:56,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:56,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:56,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:56,736 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:56,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 534 states and 1529 transitions. [2020-04-18 19:52:56,837 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:56,981 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:52:56,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:52:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:52:56,982 INFO L87 Difference]: Start difference. First operand 1226 states. Second operand 11 states. [2020-04-18 19:52:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:57,553 INFO L93 Difference]: Finished difference Result 1379 states and 4573 transitions. [2020-04-18 19:52:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 4573 transitions. [2020-04-18 19:52:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:57,558 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1561226399, now seen corresponding path program 3 times [2020-04-18 19:52:57,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:57,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412812210] [2020-04-18 19:52:57,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:57,683 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 19:52:57,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412812210] [2020-04-18 19:52:57,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:57,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:57,684 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:57,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:57,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 458 states and 1317 transitions. [2020-04-18 19:52:57,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:57,868 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:52:57,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:57,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:52:57,869 INFO L87 Difference]: Start difference. First operand 1379 states and 4573 transitions. Second operand 8 states. [2020-04-18 19:52:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:58,062 INFO L93 Difference]: Finished difference Result 1569 states and 4965 transitions. [2020-04-18 19:52:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4965 transitions. [2020-04-18 19:52:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:58,068 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:52:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash 233478989, now seen corresponding path program 4 times [2020-04-18 19:52:58,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:58,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606202516] [2020-04-18 19:52:58,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:58,191 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 19:52:58,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606202516] [2020-04-18 19:52:58,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:58,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:52:58,193 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:58,202 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:58,320 INFO L259 McrAutomatonBuilder]: Finished intersection with 454 states and 1313 transitions. [2020-04-18 19:52:58,321 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:58,430 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:52:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:52:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:52:58,431 INFO L87 Difference]: Start difference. First operand 1569 states and 4965 transitions. Second operand 6 states. [2020-04-18 19:52:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:58,505 INFO L93 Difference]: Finished difference Result 1569 states and 4965 transitions. [2020-04-18 19:52:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4965 transitions. [2020-04-18 19:52:58,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:58,509 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [870022280] [2020-04-18 19:52:58,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:58,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:52:58,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [870022280] [2020-04-18 19:52:58,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:52:58,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:58,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:52:58,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:52:58,512 INFO L87 Difference]: Start difference. First operand 12585 states and 50805 transitions. Second operand 18 states. [2020-04-18 19:53:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:01,275 INFO L93 Difference]: Finished difference Result 23261 states and 92721 transitions. [2020-04-18 19:53:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-04-18 19:53:01,275 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-04-18 19:53:01,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:53:01,326 INFO L225 Difference]: With dead ends: 23261 [2020-04-18 19:53:01,327 INFO L226 Difference]: Without dead ends: 16349 [2020-04-18 19:53:01,330 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2131, Invalid=9641, Unknown=0, NotChecked=0, Total=11772 [2020-04-18 19:53:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16349 states. [2020-04-18 19:53:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16349 to 12211. [2020-04-18 19:53:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12211 states. [2020-04-18 19:53:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 49095 transitions. [2020-04-18 19:53:01,765 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 49095 transitions. Word has length 49 [2020-04-18 19:53:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:53:01,766 INFO L479 AbstractCegarLoop]: Abstraction has 12211 states and 49095 transitions. [2020-04-18 19:53:01,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:53:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 49095 transitions. [2020-04-18 19:53:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:53:01,807 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:53:01,807 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:53:01,808 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:53:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:01,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1844736298, now seen corresponding path program 1 times [2020-04-18 19:53:01,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:53:01,809 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [769286389] [2020-04-18 19:53:01,813 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:01,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 1577 states and 5602 transitions. [2020-04-18 19:53:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states. [2020-04-18 19:53:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:53:01,908 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:53:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1663875006, now seen corresponding path program 2 times [2020-04-18 19:53:01,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:01,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245086343] [2020-04-18 19:53:01,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:02,094 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 19:53:02,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245086343] [2020-04-18 19:53:02,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:02,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:02,095 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:02,104 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:02,185 INFO L259 McrAutomatonBuilder]: Finished intersection with 302 states and 740 transitions. [2020-04-18 19:53:02,185 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:02,310 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:53:02,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:53:02,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:53:02,311 INFO L87 Difference]: Start difference. First operand 1577 states. Second operand 10 states. [2020-04-18 19:53:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:03,296 INFO L93 Difference]: Finished difference Result 2651 states and 8610 transitions. [2020-04-18 19:53:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 8610 transitions. [2020-04-18 19:53:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:53:03,302 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:53:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2007079826, now seen corresponding path program 3 times [2020-04-18 19:53:03,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:03,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782699526] [2020-04-18 19:53:03,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:03,498 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 19:53:03,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782699526] [2020-04-18 19:53:03,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:03,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:03,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:03,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:03,563 INFO L259 McrAutomatonBuilder]: Finished intersection with 302 states and 748 transitions. [2020-04-18 19:53:03,564 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:03,595 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:53:03,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:53:03,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:53:03,596 INFO L87 Difference]: Start difference. First operand 2651 states and 8610 transitions. Second operand 7 states. [2020-04-18 19:53:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:03,780 INFO L93 Difference]: Finished difference Result 2951 states and 9282 transitions. [2020-04-18 19:53:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 9282 transitions. [2020-04-18 19:53:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:53:03,790 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:53:03,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:03,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1462091452, now seen corresponding path program 4 times [2020-04-18 19:53:03,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:03,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016015817] [2020-04-18 19:53:03,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:03,897 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 19:53:03,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016015817] [2020-04-18 19:53:03,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:03,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:03,898 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:03,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:03,985 INFO L259 McrAutomatonBuilder]: Finished intersection with 360 states and 946 transitions. [2020-04-18 19:53:03,985 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:04,056 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:53:04,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:53:04,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1350, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:53:04,057 INFO L87 Difference]: Start difference. First operand 2951 states and 9282 transitions. Second operand 8 states. [2020-04-18 19:53:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:04,263 INFO L93 Difference]: Finished difference Result 3073 states and 9517 transitions. [2020-04-18 19:53:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 9517 transitions. [2020-04-18 19:53:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:53:04,268 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:53:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1844736298, now seen corresponding path program 5 times [2020-04-18 19:53:04,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:04,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818015907] [2020-04-18 19:53:04,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:53:04,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818015907] [2020-04-18 19:53:04,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:04,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:04,353 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:04,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:04,433 INFO L259 McrAutomatonBuilder]: Finished intersection with 356 states and 942 transitions. [2020-04-18 19:53:04,433 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:04,572 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:53:04,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:53:04,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2325, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:53:04,573 INFO L87 Difference]: Start difference. First operand 3073 states and 9517 transitions. Second operand 7 states. [2020-04-18 19:53:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:04,718 INFO L93 Difference]: Finished difference Result 3073 states and 9517 transitions. [2020-04-18 19:53:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 9517 transitions. [2020-04-18 19:53:04,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:53:04,722 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [769286389] [2020-04-18 19:53:04,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:53:04,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:53:04,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [769286389] [2020-04-18 19:53:04,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:53:04,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:53:04,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:53:04,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=2958, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 19:53:04,724 INFO L87 Difference]: Start difference. First operand 12211 states and 49095 transitions. Second operand 19 states. [2020-04-18 19:53:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:07,882 INFO L93 Difference]: Finished difference Result 21056 states and 83078 transitions. [2020-04-18 19:53:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-04-18 19:53:07,883 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-04-18 19:53:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:53:07,931 INFO L225 Difference]: With dead ends: 21056 [2020-04-18 19:53:07,932 INFO L226 Difference]: Without dead ends: 14432 [2020-04-18 19:53:07,937 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6664 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2337, Invalid=14693, Unknown=0, NotChecked=0, Total=17030 [2020-04-18 19:53:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14432 states. [2020-04-18 19:53:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14432 to 10525. [2020-04-18 19:53:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10525 states. [2020-04-18 19:53:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 41527 transitions. [2020-04-18 19:53:08,316 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 41527 transitions. Word has length 50 [2020-04-18 19:53:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:53:08,317 INFO L479 AbstractCegarLoop]: Abstraction has 10525 states and 41527 transitions. [2020-04-18 19:53:08,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:53:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 41527 transitions. [2020-04-18 19:53:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:53:08,341 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:53:08,341 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:53:08,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:53:08,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:08,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1284618612, now seen corresponding path program 1 times [2020-04-18 19:53:08,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:53:08,342 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1011298735] [2020-04-18 19:53:08,345 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:08,399 INFO L259 McrAutomatonBuilder]: Finished intersection with 2093 states and 7629 transitions. [2020-04-18 19:53:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states. [2020-04-18 19:53:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:53:08,423 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:53:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:08,423 INFO L82 PathProgramCache]: Analyzing trace with hash -40517458, now seen corresponding path program 2 times [2020-04-18 19:53:08,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:08,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238733441] [2020-04-18 19:53:08,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:08,541 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 19:53:08,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238733441] [2020-04-18 19:53:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:08,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:53:08,542 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:08,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:08,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 313 states and 761 transitions. [2020-04-18 19:53:08,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:08,738 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:53:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:53:08,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:53:08,739 INFO L87 Difference]: Start difference. First operand 2093 states. Second operand 11 states. [2020-04-18 19:53:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:09,044 INFO L93 Difference]: Finished difference Result 2501 states and 8795 transitions. [2020-04-18 19:53:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 8795 transitions. [2020-04-18 19:53:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:53:09,048 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:53:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:09,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1919805420, now seen corresponding path program 3 times [2020-04-18 19:53:09,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:09,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127920354] [2020-04-18 19:53:09,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:09,164 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 19:53:09,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127920354] [2020-04-18 19:53:09,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:09,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:53:09,165 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:09,170 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:09,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 995 transitions. [2020-04-18 19:53:09,260 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:09,336 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:53:09,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:53:09,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:53:09,337 INFO L87 Difference]: Start difference. First operand 2501 states and 8795 transitions. Second operand 10 states. [2020-04-18 19:53:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:09,625 INFO L93 Difference]: Finished difference Result 3033 states and 10209 transitions. [2020-04-18 19:53:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 10209 transitions. [2020-04-18 19:53:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:53:09,629 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:53:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:09,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1307764278, now seen corresponding path program 4 times [2020-04-18 19:53:09,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:09,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083931345] [2020-04-18 19:53:09,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:09,735 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 19:53:09,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083931345] [2020-04-18 19:53:09,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:09,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:09,739 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:09,744 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:10,013 INFO L259 McrAutomatonBuilder]: Finished intersection with 407 states and 1095 transitions. [2020-04-18 19:53:10,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:10,119 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:53:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:53:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:53:10,120 INFO L87 Difference]: Start difference. First operand 3033 states and 10209 transitions. Second operand 7 states. [2020-04-18 19:53:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:10,404 INFO L93 Difference]: Finished difference Result 3033 states and 10209 transitions. [2020-04-18 19:53:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 10209 transitions. [2020-04-18 19:53:10,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:53:10,409 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1011298735] [2020-04-18 19:53:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:53:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:53:10,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1011298735] [2020-04-18 19:53:10,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:53:10,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:53:10,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:53:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1732, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:53:10,411 INFO L87 Difference]: Start difference. First operand 10525 states and 41527 transitions. Second operand 20 states. [2020-04-18 19:53:14,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:14,152 INFO L93 Difference]: Finished difference Result 18673 states and 71813 transitions. [2020-04-18 19:53:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-04-18 19:53:14,153 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-04-18 19:53:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:53:14,181 INFO L225 Difference]: With dead ends: 18673 [2020-04-18 19:53:14,181 INFO L226 Difference]: Without dead ends: 12868 [2020-04-18 19:53:14,185 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5998 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2156, Invalid=13846, Unknown=0, NotChecked=0, Total=16002 [2020-04-18 19:53:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2020-04-18 19:53:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 8266. [2020-04-18 19:53:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8266 states. [2020-04-18 19:53:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 31450 transitions. [2020-04-18 19:53:14,546 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 31450 transitions. Word has length 51 [2020-04-18 19:53:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:53:14,546 INFO L479 AbstractCegarLoop]: Abstraction has 8266 states and 31450 transitions. [2020-04-18 19:53:14,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:53:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 31450 transitions. [2020-04-18 19:53:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:53:14,558 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:53:14,559 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:53:14,559 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:53:14,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:14,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1819259521, now seen corresponding path program 1 times [2020-04-18 19:53:14,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:53:14,560 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [491867161] [2020-04-18 19:53:14,561 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:14,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 3477 states and 13165 transitions. [2020-04-18 19:53:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states. [2020-04-18 19:53:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:53:14,657 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:53:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1529729421, now seen corresponding path program 2 times [2020-04-18 19:53:14,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:14,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034273799] [2020-04-18 19:53:14,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:14,732 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 19:53:14,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034273799] [2020-04-18 19:53:14,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:14,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:14,733 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:14,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:14,841 INFO L259 McrAutomatonBuilder]: Finished intersection with 451 states and 1192 transitions. [2020-04-18 19:53:14,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:14,879 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:53:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:53:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:53:14,880 INFO L87 Difference]: Start difference. First operand 3477 states. Second operand 7 states. [2020-04-18 19:53:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:15,080 INFO L93 Difference]: Finished difference Result 4701 states and 17479 transitions. [2020-04-18 19:53:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 17479 transitions. [2020-04-18 19:53:15,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:53:15,089 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:53:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash -9949815, now seen corresponding path program 3 times [2020-04-18 19:53:15,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:15,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099279681] [2020-04-18 19:53:15,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:15,194 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 19:53:15,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099279681] [2020-04-18 19:53:15,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:15,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:15,195 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:15,201 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:15,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 315 states and 792 transitions. [2020-04-18 19:53:15,271 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:15,319 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:53:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:53:15,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:53:15,319 INFO L87 Difference]: Start difference. First operand 4701 states and 17479 transitions. Second operand 8 states. [2020-04-18 19:53:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:15,526 INFO L93 Difference]: Finished difference Result 5721 states and 20393 transitions. [2020-04-18 19:53:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 20393 transitions. [2020-04-18 19:53:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:53:15,537 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:53:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash 493595991, now seen corresponding path program 4 times [2020-04-18 19:53:15,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:15,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491321216] [2020-04-18 19:53:15,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:15,663 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 19:53:15,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491321216] [2020-04-18 19:53:15,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:15,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:53:15,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:15,671 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:15,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 257 states and 608 transitions. [2020-04-18 19:53:15,734 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:15,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:53:15,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:53:15,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:53:15,865 INFO L87 Difference]: Start difference. First operand 5721 states and 20393 transitions. Second operand 8 states. [2020-04-18 19:53:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:16,296 INFO L93 Difference]: Finished difference Result 5721 states and 20393 transitions. [2020-04-18 19:53:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 20393 transitions. [2020-04-18 19:53:16,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:53:16,304 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [491867161] [2020-04-18 19:53:16,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:53:16,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:53:16,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [491867161] [2020-04-18 19:53:16,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:53:16,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:53:16,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:53:16,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1540, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:53:16,305 INFO L87 Difference]: Start difference. First operand 8266 states and 31450 transitions. Second operand 16 states. [2020-04-18 19:53:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:17,345 INFO L93 Difference]: Finished difference Result 7591 states and 28345 transitions. [2020-04-18 19:53:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-18 19:53:17,345 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-04-18 19:53:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:53:17,357 INFO L225 Difference]: With dead ends: 7591 [2020-04-18 19:53:17,359 INFO L226 Difference]: Without dead ends: 5485 [2020-04-18 19:53:17,360 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=686, Invalid=4426, Unknown=0, NotChecked=0, Total=5112 [2020-04-18 19:53:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2020-04-18 19:53:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 3826. [2020-04-18 19:53:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3826 states. [2020-04-18 19:53:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 14017 transitions. [2020-04-18 19:53:17,536 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 14017 transitions. Word has length 53 [2020-04-18 19:53:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:53:17,537 INFO L479 AbstractCegarLoop]: Abstraction has 3826 states and 14017 transitions. [2020-04-18 19:53:17,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:53:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 14017 transitions. [2020-04-18 19:53:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:53:17,543 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:53:17,543 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:53:17,543 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:53:17,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:17,544 INFO L82 PathProgramCache]: Analyzing trace with hash -552494082, now seen corresponding path program 1 times [2020-04-18 19:53:17,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:53:17,544 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1715128677] [2020-04-18 19:53:17,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:17,659 INFO L259 McrAutomatonBuilder]: Finished intersection with 5717 states and 22517 transitions. [2020-04-18 19:53:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states. [2020-04-18 19:53:17,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:53:17,704 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:53:17,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:17,704 INFO L82 PathProgramCache]: Analyzing trace with hash 10828748, now seen corresponding path program 2 times [2020-04-18 19:53:17,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:17,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293708673] [2020-04-18 19:53:17,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:17,801 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 19:53:17,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293708673] [2020-04-18 19:53:17,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:17,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:17,802 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:17,809 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:17,899 INFO L259 McrAutomatonBuilder]: Finished intersection with 525 states and 1433 transitions. [2020-04-18 19:53:17,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:17,956 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:53:17,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:53:17,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:53:17,957 INFO L87 Difference]: Start difference. First operand 5717 states. Second operand 8 states. [2020-04-18 19:53:18,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:18,220 INFO L93 Difference]: Finished difference Result 7877 states and 30335 transitions. [2020-04-18 19:53:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 30335 transitions. [2020-04-18 19:53:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:53:18,232 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:53:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1026335686, now seen corresponding path program 3 times [2020-04-18 19:53:18,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:18,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953788652] [2020-04-18 19:53:18,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:18,316 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 19:53:18,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953788652] [2020-04-18 19:53:18,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:18,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:18,318 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:18,324 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:18,435 INFO L259 McrAutomatonBuilder]: Finished intersection with 423 states and 1071 transitions. [2020-04-18 19:53:18,435 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:18,465 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:53:18,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:53:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:53:18,466 INFO L87 Difference]: Start difference. First operand 7877 states and 30335 transitions. Second operand 7 states. [2020-04-18 19:53:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:18,696 INFO L93 Difference]: Finished difference Result 10817 states and 40761 transitions. [2020-04-18 19:53:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 10817 states and 40761 transitions. [2020-04-18 19:53:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:53:18,709 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:53:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1882768406, now seen corresponding path program 4 times [2020-04-18 19:53:18,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:18,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131003332] [2020-04-18 19:53:18,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:18,803 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 19:53:18,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131003332] [2020-04-18 19:53:18,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:18,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:53:18,804 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:18,810 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:18,876 INFO L259 McrAutomatonBuilder]: Finished intersection with 275 states and 647 transitions. [2020-04-18 19:53:18,876 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:18,989 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:53:18,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:53:18,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:53:18,991 INFO L87 Difference]: Start difference. First operand 10817 states and 40761 transitions. Second operand 8 states. [2020-04-18 19:53:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:19,580 INFO L93 Difference]: Finished difference Result 10881 states and 40821 transitions. [2020-04-18 19:53:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 40821 transitions. [2020-04-18 19:53:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:53:19,601 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:53:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1889113630, now seen corresponding path program 5 times [2020-04-18 19:53:19,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:19,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050817551] [2020-04-18 19:53:19,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:19,694 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 19:53:19,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050817551] [2020-04-18 19:53:19,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:19,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:19,695 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:19,701 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:19,751 INFO L259 McrAutomatonBuilder]: Finished intersection with 284 states and 666 transitions. [2020-04-18 19:53:19,751 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:19,816 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:53:19,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:53:19,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1776, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:53:19,817 INFO L87 Difference]: Start difference. First operand 10881 states and 40821 transitions. Second operand 7 states. [2020-04-18 19:53:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:20,329 INFO L93 Difference]: Finished difference Result 15873 states and 57121 transitions. [2020-04-18 19:53:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 57121 transitions. [2020-04-18 19:53:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:53:20,349 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:53:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:53:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1522456770, now seen corresponding path program 6 times [2020-04-18 19:53:20,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:53:20,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158744770] [2020-04-18 19:53:20,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:53:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:53:20,445 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 19:53:20,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158744770] [2020-04-18 19:53:20,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:53:20,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:53:20,446 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:53:20,452 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:53:20,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 542 states and 1473 transitions. [2020-04-18 19:53:20,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:53:20,751 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 44 times. [2020-04-18 19:53:20,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:53:20,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2896, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:53:20,752 INFO L87 Difference]: Start difference. First operand 15873 states and 57121 transitions. Second operand 11 states. [2020-04-18 19:53:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:23,176 INFO L93 Difference]: Finished difference Result 33019 states and 114782 transitions. [2020-04-18 19:53:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 33019 states and 114782 transitions. [2020-04-18 19:53:23,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:53:23,216 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1715128677] [2020-04-18 19:53:23,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:53:23,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:53:23,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1715128677] [2020-04-18 19:53:23,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 19:53:23,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:53:23,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:53:23,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=6842, Unknown=0, NotChecked=0, Total=7832 [2020-04-18 19:53:23,218 INFO L87 Difference]: Start difference. First operand 3826 states and 14017 transitions. Second operand 23 states. [2020-04-18 19:53:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:53:25,017 INFO L93 Difference]: Finished difference Result 4028 states and 14833 transitions. [2020-04-18 19:53:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-04-18 19:53:25,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-04-18 19:53:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:53:25,018 INFO L225 Difference]: With dead ends: 4028 [2020-04-18 19:53:25,018 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:53:25,019 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5641 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2006, Invalid=13996, Unknown=0, NotChecked=0, Total=16002 [2020-04-18 19:53:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:53:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:53:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:53:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:53:25,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-04-18 19:53:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:53:25,020 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:53:25,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 19:53:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:53:25,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:53:25,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:53:25 BasicIcfg [2020-04-18 19:53:25,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:53:25,027 INFO L168 Benchmark]: Toolchain (without parser) took 48026.24 ms. Allocated memory was 145.8 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 102.4 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 395.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:53:25,028 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 19:53:25,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 159.5 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:53:25,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.32 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:53:25,030 INFO L168 Benchmark]: Boogie Preprocessor took 30.27 ms. Allocated memory is still 203.4 MB. Free memory was 157.6 MB in the beginning and 155.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:53:25,030 INFO L168 Benchmark]: RCFGBuilder took 485.54 ms. Allocated memory is still 203.4 MB. Free memory was 155.7 MB in the beginning and 131.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:53:25,031 INFO L168 Benchmark]: TraceAbstraction took 46736.95 ms. Allocated memory was 203.4 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 131.4 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 367.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:53:25,034 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 159.5 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.32 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.27 ms. Allocated memory is still 203.4 MB. Free memory was 157.6 MB in the beginning and 155.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.54 ms. Allocated memory is still 203.4 MB. Free memory was 155.7 MB in the beginning and 131.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46736.95 ms. Allocated memory was 203.4 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 131.4 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 367.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 46.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 985 SDtfs, 7477 SDslu, 7394 SDs, 0 SdLazy, 2458 SolverSat, 1210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2143 GetRequests, 1500 SyntacticMatches, 0 SemanticMatches, 643 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25163 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47253occurred 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: 5.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 19298 StatesRemovedByMinimization, 5 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...