/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:15:02,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:15:02,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:15:02,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:15:02,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:15:02,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:15:02,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:15:02,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:15:02,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:15:02,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:15:02,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:15:02,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:15:02,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:15:02,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:15:02,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:15:02,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:15:02,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:15:02,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:15:02,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:15:02,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:15:02,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:15:02,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:15:02,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:15:02,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:15:02,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:15:02,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:15:02,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:15:02,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:15:02,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:15:02,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:15:02,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:15:02,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:15:02,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:15:02,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:15:02,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:15:02,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:15:02,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:15:02,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:15:02,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:15:02,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:15:02,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:15:02,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:15:02,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:15:02,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:15:02,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:15:02,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:15:02,509 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:15:02,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:15:02,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:15:02,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:15:02,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:15:02,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:15:02,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:15:02,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:15:02,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:15:02,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:15:02,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:15:02,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:15:02,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:15:02,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:15:02,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:15:02,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:15:02,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:15:02,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:15:02,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:15:02,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:15:02,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:15:02,514 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:15:02,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:15:02,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:15:02,514 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:15:02,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:15:02,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:15:02,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:15:02,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:15:02,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:15:02,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:15:02,826 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:15:02,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-18 15:15:02,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376b52722/b606ff870c204cf3a884bec4c5eab101/FLAG9f4d8a23c [2020-04-18 15:15:03,445 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:15:03,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-18 15:15:03,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376b52722/b606ff870c204cf3a884bec4c5eab101/FLAG9f4d8a23c [2020-04-18 15:15:03,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376b52722/b606ff870c204cf3a884bec4c5eab101 [2020-04-18 15:15:03,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:15:03,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:15:03,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:15:03,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:15:03,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:15:03,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:15:03" (1/1) ... [2020-04-18 15:15:03,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb66abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:03, skipping insertion in model container [2020-04-18 15:15:03,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:15:03" (1/1) ... [2020-04-18 15:15:03,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:15:03,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:15:04,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:15:04,432 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:15:04,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:15:04,594 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:15:04,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04 WrapperNode [2020-04-18 15:15:04,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:15:04,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:15:04,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:15:04,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:15:04,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:15:04,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:15:04,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:15:04,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:15:04,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... [2020-04-18 15:15:04,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:15:04,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:15:04,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:15:04,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:15:04,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:15:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:15:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:15:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:15:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:15:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:15:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:15:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:15:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:15:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:15:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:15:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:15:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:15:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:15:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:15:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:15:04,745 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:15:05,169 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:15:05,169 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:15:05,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:15:05 BoogieIcfgContainer [2020-04-18 15:15:05,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:15:05,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:15:05,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:15:05,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:15:05,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:15:03" (1/3) ... [2020-04-18 15:15:05,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224d065b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:15:05, skipping insertion in model container [2020-04-18 15:15:05,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:15:04" (2/3) ... [2020-04-18 15:15:05,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224d065b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:15:05, skipping insertion in model container [2020-04-18 15:15:05,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:15:05" (3/3) ... [2020-04-18 15:15:05,182 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-04-18 15:15:05,192 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:15:05,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:15:05,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:15:05,201 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:15:05,229 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,229 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,230 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,230 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,231 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,231 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,231 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,232 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,232 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,232 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,232 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,233 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,233 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,234 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,234 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,234 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,234 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,235 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,235 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,235 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,236 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,236 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,236 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,237 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,241 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,241 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,242 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,242 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,248 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,248 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,248 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,249 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,251 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,252 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,252 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,252 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,256 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,256 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,256 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,257 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:15:05,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:15:05,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:15:05,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:15:05,294 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:15:05,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:15:05,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:15:05,295 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:15:05,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:15:05,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:15:05,312 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-18 15:15:05,314 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 15:15:05,360 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 15:15:05,361 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:15:05,367 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:15:05,371 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 15:15:05,395 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 15:15:05,395 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:15:05,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 15:15:05,399 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 15:15:05,400 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:15:06,756 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 15:15:06,853 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-18 15:15:06,853 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 15:15:06,857 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 15:15:06,916 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 15:15:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 15:15:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:15:06,929 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:06,930 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:06,930 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-18 15:15:06,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:06,945 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [73918300] [2020-04-18 15:15:06,961 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:06,974 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:15:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:15:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:15:06,976 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 2 times [2020-04-18 15:15:06,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:06,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44021373] [2020-04-18 15:15:06,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:07,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44021373] [2020-04-18 15:15:07,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:07,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:15:07,173 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:07,175 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:07,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:15:07,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:07,188 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:07,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:15:07,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:15:07,196 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 15:15:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:07,201 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:15:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:15:07,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:07,207 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [73918300] [2020-04-18 15:15:07,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:07,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:15:07,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [73918300] [2020-04-18 15:15:07,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:15:07,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:07,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:15:07,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:15:07,223 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 15:15:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:07,277 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 15:15:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:15:07,279 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 15:15:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:07,308 INFO L225 Difference]: With dead ends: 850 [2020-04-18 15:15:07,309 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 15:15:07,310 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:15:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 15:15:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 15:15:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 15:15:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 15:15:07,431 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 15:15:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:07,433 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 15:15:07,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:15:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 15:15:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:15:07,438 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:07,438 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:07,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:07,439 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-18 15:15:07,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:07,439 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1591063841] [2020-04-18 15:15:07,440 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:07,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:15:07,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:15:07,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:15:07,441 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:07,442 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 2 times [2020-04-18 15:15:07,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:07,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973294987] [2020-04-18 15:15:07,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:07,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973294987] [2020-04-18 15:15:07,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:07,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:15:07,602 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:07,603 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:07,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:15:07,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:07,619 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:07,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:07,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:07,620 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:15:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:07,636 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 15:15:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 15:15:07,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:07,637 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1591063841] [2020-04-18 15:15:07,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:07,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:15:07,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1591063841] [2020-04-18 15:15:07,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:15:07,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:07,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:07,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:15:07,640 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 15:15:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:07,679 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-04-18 15:15:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:15:07,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:15:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:07,686 INFO L225 Difference]: With dead ends: 802 [2020-04-18 15:15:07,686 INFO L226 Difference]: Without dead ends: 658 [2020-04-18 15:15:07,687 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:15:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-04-18 15:15:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-04-18 15:15:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-04-18 15:15:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-04-18 15:15:07,718 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-04-18 15:15:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:07,718 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-04-18 15:15:07,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:15:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-04-18 15:15:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:15:07,720 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:07,721 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:07,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:07,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-04-18 15:15:07,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:07,722 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1405354016] [2020-04-18 15:15:07,722 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:07,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 15:15:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 15:15:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:15:07,724 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:07,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 2 times [2020-04-18 15:15:07,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:07,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66525738] [2020-04-18 15:15:07,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:07,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66525738] [2020-04-18 15:15:07,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:07,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:15:07,824 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:07,825 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:07,827 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-04-18 15:15:07,827 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:07,839 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:07,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:07,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:07,840 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 15:15:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:07,853 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 15:15:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 15:15:07,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:07,853 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1405354016] [2020-04-18 15:15:07,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:07,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:15:07,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1405354016] [2020-04-18 15:15:07,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:15:07,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:07,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:07,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:15:07,859 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-04-18 15:15:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:07,901 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-04-18 15:15:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:15:07,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:15:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:07,907 INFO L225 Difference]: With dead ends: 738 [2020-04-18 15:15:07,908 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 15:15:07,908 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:15:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 15:15:07,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-04-18 15:15:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-04-18 15:15:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-04-18 15:15:07,935 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-04-18 15:15:07,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:07,936 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-04-18 15:15:07,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:15:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-04-18 15:15:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:15:07,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:07,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:07,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-04-18 15:15:07,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:07,940 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [233254932] [2020-04-18 15:15:07,940 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:07,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 15:15:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:15:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:15:07,944 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:07,945 INFO L82 PathProgramCache]: Analyzing trace with hash 672258297, now seen corresponding path program 2 times [2020-04-18 15:15:07,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:07,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818773368] [2020-04-18 15:15:07,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818773368] [2020-04-18 15:15:08,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:08,055 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,056 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,081 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 17 transitions. [2020-04-18 15:15:08,081 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,095 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:08,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:08,096 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 15:15:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,115 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2020-04-18 15:15:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2020-04-18 15:15:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:15:08,115 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 3 times [2020-04-18 15:15:08,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:08,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829551332] [2020-04-18 15:15:08,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829551332] [2020-04-18 15:15:08,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:15:08,180 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,185 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:15:08,185 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,192 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:08,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:15:08,193 INFO L87 Difference]: Start difference. First operand 32 states and 48 transitions. Second operand 4 states. [2020-04-18 15:15:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,206 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2020-04-18 15:15:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2020-04-18 15:15:08,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:08,207 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [233254932] [2020-04-18 15:15:08,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:08,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:15:08,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [233254932] [2020-04-18 15:15:08,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:15:08,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:08,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:08,209 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 5 states. [2020-04-18 15:15:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,247 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-04-18 15:15:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:15:08,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 15:15:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:08,253 INFO L225 Difference]: With dead ends: 658 [2020-04-18 15:15:08,253 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 15:15:08,253 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:15:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 15:15:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-18 15:15:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-18 15:15:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-18 15:15:08,275 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-18 15:15:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:08,275 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-18 15:15:08,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:15:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-18 15:15:08,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:15:08,277 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:08,277 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:08,278 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,278 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-18 15:15:08,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:08,279 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [380665667] [2020-04-18 15:15:08,279 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 78 transitions. [2020-04-18 15:15:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 15:15:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:15:08,282 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,282 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 2 times [2020-04-18 15:15:08,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:08,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42783124] [2020-04-18 15:15:08,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42783124] [2020-04-18 15:15:08,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:15:08,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,362 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-04-18 15:15:08,362 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,382 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:08,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:08,383 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-04-18 15:15:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,397 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2020-04-18 15:15:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2020-04-18 15:15:08,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:08,398 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [380665667] [2020-04-18 15:15:08,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:08,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:15:08,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [380665667] [2020-04-18 15:15:08,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:15:08,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:15:08,400 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-18 15:15:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,418 INFO L93 Difference]: Finished difference Result 610 states and 1962 transitions. [2020-04-18 15:15:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:15:08,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 15:15:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:08,424 INFO L225 Difference]: With dead ends: 610 [2020-04-18 15:15:08,425 INFO L226 Difference]: Without dead ends: 546 [2020-04-18 15:15:08,425 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:15:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-04-18 15:15:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2020-04-18 15:15:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-04-18 15:15:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1786 transitions. [2020-04-18 15:15:08,449 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1786 transitions. Word has length 14 [2020-04-18 15:15:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:08,450 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 1786 transitions. [2020-04-18 15:15:08,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:15:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1786 transitions. [2020-04-18 15:15:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:08,453 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:08,453 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:08,453 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 1 times [2020-04-18 15:15:08,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:08,454 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [366043276] [2020-04-18 15:15:08,455 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,457 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 139 transitions. [2020-04-18 15:15:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 15:15:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:08,460 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 2 times [2020-04-18 15:15:08,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:08,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976805722] [2020-04-18 15:15:08,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976805722] [2020-04-18 15:15:08,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:08,530 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,531 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,536 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 55 transitions. [2020-04-18 15:15:08,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,548 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:08,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:08,549 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-04-18 15:15:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,570 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-04-18 15:15:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2020-04-18 15:15:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:08,571 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:08,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,571 INFO L82 PathProgramCache]: Analyzing trace with hash 350276811, now seen corresponding path program 3 times [2020-04-18 15:15:08,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:08,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897285076] [2020-04-18 15:15:08,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897285076] [2020-04-18 15:15:08,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:08,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,658 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,663 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 15:15:08,663 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,672 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:08,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:15:08,673 INFO L87 Difference]: Start difference. First operand 74 states and 146 transitions. Second operand 4 states. [2020-04-18 15:15:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,694 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-04-18 15:15:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2020-04-18 15:15:08,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:08,695 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [366043276] [2020-04-18 15:15:08,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:08,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:15:08,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [366043276] [2020-04-18 15:15:08,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:15:08,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:08,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:08,697 INFO L87 Difference]: Start difference. First operand 546 states and 1786 transitions. Second operand 5 states. [2020-04-18 15:15:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,727 INFO L93 Difference]: Finished difference Result 794 states and 2462 transitions. [2020-04-18 15:15:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:15:08,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 15:15:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:08,732 INFO L225 Difference]: With dead ends: 794 [2020-04-18 15:15:08,732 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 15:15:08,733 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 15:15:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 514. [2020-04-18 15:15:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-18 15:15:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1598 transitions. [2020-04-18 15:15:08,752 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1598 transitions. Word has length 15 [2020-04-18 15:15:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:08,752 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1598 transitions. [2020-04-18 15:15:08,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:15:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1598 transitions. [2020-04-18 15:15:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:08,754 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:08,754 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:08,754 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-18 15:15:08,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:08,755 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [404012356] [2020-04-18 15:15:08,756 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,757 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 204 transitions. [2020-04-18 15:15:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-04-18 15:15:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:08,759 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:08,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,759 INFO L82 PathProgramCache]: Analyzing trace with hash 350276865, now seen corresponding path program 2 times [2020-04-18 15:15:08,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:08,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861603457] [2020-04-18 15:15:08,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861603457] [2020-04-18 15:15:08,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:08,812 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,813 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,817 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 15:15:08,818 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,834 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:08,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:08,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:08,835 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2020-04-18 15:15:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:08,859 INFO L93 Difference]: Finished difference Result 98 states and 224 transitions. [2020-04-18 15:15:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 224 transitions. [2020-04-18 15:15:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:08,859 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:08,860 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 3 times [2020-04-18 15:15:08,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:08,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567266924] [2020-04-18 15:15:08,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:08,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567266924] [2020-04-18 15:15:08,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:08,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:08,919 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:08,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:08,925 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 80 transitions. [2020-04-18 15:15:08,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:08,971 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:08,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:08,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:08,972 INFO L87 Difference]: Start difference. First operand 98 states and 224 transitions. Second operand 5 states. [2020-04-18 15:15:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,003 INFO L93 Difference]: Finished difference Result 110 states and 240 transitions. [2020-04-18 15:15:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 240 transitions. [2020-04-18 15:15:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,004 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:15:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 690280005, now seen corresponding path program 4 times [2020-04-18 15:15:09,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:09,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696930196] [2020-04-18 15:15:09,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:09,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696930196] [2020-04-18 15:15:09,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:09,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:09,049 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:09,050 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:09,055 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 15:15:09,055 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:09,092 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:15:09,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:15:09,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:15:09,093 INFO L87 Difference]: Start difference. First operand 110 states and 240 transitions. Second operand 6 states. [2020-04-18 15:15:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,156 INFO L93 Difference]: Finished difference Result 146 states and 304 transitions. [2020-04-18 15:15:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 304 transitions. [2020-04-18 15:15:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,157 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:15:09,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,157 INFO L82 PathProgramCache]: Analyzing trace with hash -132553285, now seen corresponding path program 5 times [2020-04-18 15:15:09,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:09,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934135189] [2020-04-18 15:15:09,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:09,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934135189] [2020-04-18 15:15:09,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:09,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:09,200 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:09,202 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:09,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 75 transitions. [2020-04-18 15:15:09,207 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:09,233 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:09,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:15:09,234 INFO L87 Difference]: Start difference. First operand 146 states and 304 transitions. Second operand 5 states. [2020-04-18 15:15:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,289 INFO L93 Difference]: Finished difference Result 176 states and 338 transitions. [2020-04-18 15:15:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 338 transitions. [2020-04-18 15:15:09,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:09,291 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [404012356] [2020-04-18 15:15:09,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:09,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:15:09,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [404012356] [2020-04-18 15:15:09,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:15:09,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:09,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:15:09,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:15:09,292 INFO L87 Difference]: Start difference. First operand 514 states and 1598 transitions. Second operand 10 states. [2020-04-18 15:15:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,549 INFO L93 Difference]: Finished difference Result 1646 states and 4802 transitions. [2020-04-18 15:15:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 15:15:09,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 15:15:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:09,552 INFO L225 Difference]: With dead ends: 1646 [2020-04-18 15:15:09,552 INFO L226 Difference]: Without dead ends: 302 [2020-04-18 15:15:09,553 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2020-04-18 15:15:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-04-18 15:15:09,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 254. [2020-04-18 15:15:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-04-18 15:15:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-04-18 15:15:09,562 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-04-18 15:15:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:09,562 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-04-18 15:15:09,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:15:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-04-18 15:15:09,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,563 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:09,564 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:09,564 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,564 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-04-18 15:15:09,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:09,565 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [954849691] [2020-04-18 15:15:09,565 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:09,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 15:15:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 15:15:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,568 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:09,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,569 INFO L82 PathProgramCache]: Analyzing trace with hash 659656400, now seen corresponding path program 2 times [2020-04-18 15:15:09,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:09,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160688591] [2020-04-18 15:15:09,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:09,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160688591] [2020-04-18 15:15:09,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:09,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:09,607 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:09,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:09,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:15:09,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:09,623 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:09,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:09,624 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 15:15:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,650 INFO L93 Difference]: Finished difference Result 110 states and 272 transitions. [2020-04-18 15:15:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 272 transitions. [2020-04-18 15:15:09,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,651 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash 659646890, now seen corresponding path program 3 times [2020-04-18 15:15:09,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:09,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135000156] [2020-04-18 15:15:09,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:09,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135000156] [2020-04-18 15:15:09,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:09,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:09,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:09,715 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:09,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 75 transitions. [2020-04-18 15:15:09,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:09,734 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:09,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:09,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:09,735 INFO L87 Difference]: Start difference. First operand 110 states and 272 transitions. Second operand 5 states. [2020-04-18 15:15:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,782 INFO L93 Difference]: Finished difference Result 136 states and 315 transitions. [2020-04-18 15:15:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 315 transitions. [2020-04-18 15:15:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,782 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:15:09,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,783 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 4 times [2020-04-18 15:15:09,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:09,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645980264] [2020-04-18 15:15:09,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:09,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645980264] [2020-04-18 15:15:09,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:09,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:09,845 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:09,847 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:09,852 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 15:15:09,853 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:09,892 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:15:09,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:15:09,893 INFO L87 Difference]: Start difference. First operand 136 states and 315 transitions. Second operand 6 states. [2020-04-18 15:15:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:09,951 INFO L93 Difference]: Finished difference Result 173 states and 373 transitions. [2020-04-18 15:15:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 373 transitions. [2020-04-18 15:15:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:15:09,952 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:15:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 5 times [2020-04-18 15:15:09,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:09,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533099425] [2020-04-18 15:15:09,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:10,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533099425] [2020-04-18 15:15:10,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:10,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:10,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:10,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:10,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 15:15:10,031 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:10,062 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:15:10,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:10,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:15:10,062 INFO L87 Difference]: Start difference. First operand 173 states and 373 transitions. Second operand 4 states. [2020-04-18 15:15:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:10,077 INFO L93 Difference]: Finished difference Result 173 states and 373 transitions. [2020-04-18 15:15:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 373 transitions. [2020-04-18 15:15:10,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:10,078 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [954849691] [2020-04-18 15:15:10,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:10,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:15:10,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [954849691] [2020-04-18 15:15:10,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:15:10,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:10,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:15:10,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:15:10,080 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 10 states. [2020-04-18 15:15:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:10,565 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-04-18 15:15:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 15:15:10,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 15:15:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:10,567 INFO L225 Difference]: With dead ends: 302 [2020-04-18 15:15:10,567 INFO L226 Difference]: Without dead ends: 229 [2020-04-18 15:15:10,568 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=373, Invalid=1519, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 15:15:10,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-04-18 15:15:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-04-18 15:15:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-04-18 15:15:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-04-18 15:15:10,576 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-04-18 15:15:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:10,576 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-04-18 15:15:10,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:15:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-04-18 15:15:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:15:10,577 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:10,577 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:10,577 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-18 15:15:10,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:10,578 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1640011897] [2020-04-18 15:15:10,579 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:10,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 378 transitions. [2020-04-18 15:15:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:15:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:15:10,583 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:10,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1025487846, now seen corresponding path program 2 times [2020-04-18 15:15:10,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:10,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995865400] [2020-04-18 15:15:10,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:10,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995865400] [2020-04-18 15:15:10,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:10,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:10,620 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:10,622 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:10,626 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 58 transitions. [2020-04-18 15:15:10,626 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:10,648 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:10,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:10,648 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 4 states. [2020-04-18 15:15:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:10,671 INFO L93 Difference]: Finished difference Result 170 states and 458 transitions. [2020-04-18 15:15:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 458 transitions. [2020-04-18 15:15:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:15:10,672 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:10,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1025782656, now seen corresponding path program 3 times [2020-04-18 15:15:10,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:10,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643850974] [2020-04-18 15:15:10,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:10,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643850974] [2020-04-18 15:15:10,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:10,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:10,726 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:10,730 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:10,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 84 transitions. [2020-04-18 15:15:10,738 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:10,754 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:10,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:10,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:10,756 INFO L87 Difference]: Start difference. First operand 170 states and 458 transitions. Second operand 5 states. [2020-04-18 15:15:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:10,818 INFO L93 Difference]: Finished difference Result 212 states and 537 transitions. [2020-04-18 15:15:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 537 transitions. [2020-04-18 15:15:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:15:10,819 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:15:10,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:10,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1295643564, now seen corresponding path program 4 times [2020-04-18 15:15:10,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:10,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243489320] [2020-04-18 15:15:10,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:10,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243489320] [2020-04-18 15:15:10,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:10,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:10,886 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:10,888 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:10,894 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 60 transitions. [2020-04-18 15:15:10,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:10,943 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:15:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:15:10,944 INFO L87 Difference]: Start difference. First operand 212 states and 537 transitions. Second operand 6 states. [2020-04-18 15:15:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:11,021 INFO L93 Difference]: Finished difference Result 286 states and 690 transitions. [2020-04-18 15:15:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 690 transitions. [2020-04-18 15:15:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:15:11,023 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:15:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:11,024 INFO L82 PathProgramCache]: Analyzing trace with hash -731781760, now seen corresponding path program 5 times [2020-04-18 15:15:11,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:11,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119093561] [2020-04-18 15:15:11,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:11,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119093561] [2020-04-18 15:15:11,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:11,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:11,087 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:11,089 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:11,117 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 72 transitions. [2020-04-18 15:15:11,118 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:11,153 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:15:11,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:11,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:15:11,154 INFO L87 Difference]: Start difference. First operand 286 states and 690 transitions. Second operand 4 states. [2020-04-18 15:15:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:11,177 INFO L93 Difference]: Finished difference Result 340 states and 785 transitions. [2020-04-18 15:15:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 785 transitions. [2020-04-18 15:15:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:15:11,178 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:15:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 6 times [2020-04-18 15:15:11,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:11,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553351619] [2020-04-18 15:15:11,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:11,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553351619] [2020-04-18 15:15:11,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:11,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:11,236 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:11,238 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:11,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 15:15:11,243 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:11,352 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 15:15:11,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:15:11,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:15:11,353 INFO L87 Difference]: Start difference. First operand 340 states and 785 transitions. Second operand 7 states. [2020-04-18 15:15:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:11,379 INFO L93 Difference]: Finished difference Result 340 states and 785 transitions. [2020-04-18 15:15:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 785 transitions. [2020-04-18 15:15:11,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:11,380 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1640011897] [2020-04-18 15:15:11,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:11,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:15:11,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1640011897] [2020-04-18 15:15:11,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:15:11,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:11,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:15:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:15:11,384 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 13 states. [2020-04-18 15:15:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:11,923 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-04-18 15:15:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 15:15:11,924 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-18 15:15:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:11,925 INFO L225 Difference]: With dead ends: 227 [2020-04-18 15:15:11,925 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 15:15:11,926 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=424, Invalid=1832, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 15:15:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 15:15:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 15:15:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 15:15:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-04-18 15:15:11,931 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-04-18 15:15:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:11,932 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-04-18 15:15:11,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:15:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-04-18 15:15:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:11,932 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:11,933 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:11,933 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:11,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-18 15:15:11,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:11,934 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1647086766] [2020-04-18 15:15:11,934 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:11,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 15:15:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 15:15:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:11,940 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:11,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1725351916, now seen corresponding path program 2 times [2020-04-18 15:15:11,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:11,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774525561] [2020-04-18 15:15:11,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:11,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774525561] [2020-04-18 15:15:11,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:11,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:11,981 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:11,983 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:11,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-04-18 15:15:11,988 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:11,998 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:11,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:11,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:11,998 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-04-18 15:15:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:12,019 INFO L93 Difference]: Finished difference Result 234 states and 670 transitions. [2020-04-18 15:15:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 670 transitions. [2020-04-18 15:15:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:12,020 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:12,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1734491026, now seen corresponding path program 3 times [2020-04-18 15:15:12,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:12,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193508299] [2020-04-18 15:15:12,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:12,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193508299] [2020-04-18 15:15:12,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:12,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:12,078 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:12,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:12,085 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 89 transitions. [2020-04-18 15:15:12,085 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:12,099 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:12,100 INFO L87 Difference]: Start difference. First operand 234 states and 670 transitions. Second operand 5 states. [2020-04-18 15:15:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:12,144 INFO L93 Difference]: Finished difference Result 318 states and 870 transitions. [2020-04-18 15:15:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 870 transitions. [2020-04-18 15:15:12,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:12,145 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:15:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:12,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1510245058, now seen corresponding path program 4 times [2020-04-18 15:15:12,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:12,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041544613] [2020-04-18 15:15:12,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:12,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041544613] [2020-04-18 15:15:12,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:12,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:12,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:12,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:12,198 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 67 transitions. [2020-04-18 15:15:12,198 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:12,230 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:12,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:15:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:15:12,231 INFO L87 Difference]: Start difference. First operand 318 states and 870 transitions. Second operand 6 states. [2020-04-18 15:15:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:12,293 INFO L93 Difference]: Finished difference Result 434 states and 1134 transitions. [2020-04-18 15:15:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1134 transitions. [2020-04-18 15:15:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:12,295 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:15:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1210397842, now seen corresponding path program 5 times [2020-04-18 15:15:12,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:12,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564601587] [2020-04-18 15:15:12,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:12,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564601587] [2020-04-18 15:15:12,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:12,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:15:12,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:12,326 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:12,333 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 84 transitions. [2020-04-18 15:15:12,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:12,386 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:15:12,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:12,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:15:12,387 INFO L87 Difference]: Start difference. First operand 434 states and 1134 transitions. Second operand 4 states. [2020-04-18 15:15:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:12,426 INFO L93 Difference]: Finished difference Result 612 states and 1503 transitions. [2020-04-18 15:15:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1503 transitions. [2020-04-18 15:15:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:12,428 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:15:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:12,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1331485064, now seen corresponding path program 6 times [2020-04-18 15:15:12,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:12,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355811681] [2020-04-18 15:15:12,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:12,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355811681] [2020-04-18 15:15:12,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:12,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:12,464 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:12,466 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:12,473 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 86 transitions. [2020-04-18 15:15:12,473 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:12,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 15:15:12,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:15:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:15:12,563 INFO L87 Difference]: Start difference. First operand 612 states and 1503 transitions. Second operand 7 states. [2020-04-18 15:15:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:12,616 INFO L93 Difference]: Finished difference Result 646 states and 1548 transitions. [2020-04-18 15:15:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1548 transitions. [2020-04-18 15:15:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:15:12,618 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:15:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:12,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 7 times [2020-04-18 15:15:12,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:12,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719683980] [2020-04-18 15:15:12,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:12,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719683980] [2020-04-18 15:15:12,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:12,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:15:12,666 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:12,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:12,673 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 15:15:12,673 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:12,778 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 15:15:12,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:15:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:15:12,779 INFO L87 Difference]: Start difference. First operand 646 states and 1548 transitions. Second operand 8 states. [2020-04-18 15:15:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:12,853 INFO L93 Difference]: Finished difference Result 646 states and 1548 transitions. [2020-04-18 15:15:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1548 transitions. [2020-04-18 15:15:12,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:12,856 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1647086766] [2020-04-18 15:15:12,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:12,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:15:12,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1647086766] [2020-04-18 15:15:12,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:15:12,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:12,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:15:12,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:15:12,858 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 14 states. [2020-04-18 15:15:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:13,400 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-04-18 15:15:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 15:15:13,400 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 15:15:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:13,401 INFO L225 Difference]: With dead ends: 147 [2020-04-18 15:15:13,401 INFO L226 Difference]: Without dead ends: 107 [2020-04-18 15:15:13,402 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=389, Invalid=1773, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 15:15:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-04-18 15:15:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-04-18 15:15:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-04-18 15:15:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-04-18 15:15:13,407 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-04-18 15:15:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:13,407 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-04-18 15:15:13,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:15:13,408 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-04-18 15:15:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:13,408 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:15:13,408 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:15:13,409 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:15:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:13,409 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-18 15:15:13,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:15:13,409 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [299982809] [2020-04-18 15:15:13,410 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:13,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 370 states and 1174 transitions. [2020-04-18 15:15:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states. [2020-04-18 15:15:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:13,421 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:15:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1539514913, now seen corresponding path program 2 times [2020-04-18 15:15:13,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:13,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246359197] [2020-04-18 15:15:13,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:13,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246359197] [2020-04-18 15:15:13,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:13,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:13,461 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:13,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:13,475 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 176 transitions. [2020-04-18 15:15:13,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:13,487 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:13,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:15:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:15:13,488 INFO L87 Difference]: Start difference. First operand 370 states. Second operand 4 states. [2020-04-18 15:15:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:13,512 INFO L93 Difference]: Finished difference Result 586 states and 1790 transitions. [2020-04-18 15:15:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1790 transitions. [2020-04-18 15:15:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:13,514 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:15:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1530375803, now seen corresponding path program 3 times [2020-04-18 15:15:13,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:13,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339154319] [2020-04-18 15:15:13,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:13,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339154319] [2020-04-18 15:15:13,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:13,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:13,554 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:13,555 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:13,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 75 states and 140 transitions. [2020-04-18 15:15:13,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:13,608 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:13,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:13,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:15:13,609 INFO L87 Difference]: Start difference. First operand 586 states and 1790 transitions. Second operand 5 states. [2020-04-18 15:15:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:13,667 INFO L93 Difference]: Finished difference Result 910 states and 2754 transitions. [2020-04-18 15:15:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2754 transitions. [2020-04-18 15:15:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:13,670 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:15:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:13,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1344876367, now seen corresponding path program 4 times [2020-04-18 15:15:13,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:13,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035004028] [2020-04-18 15:15:13,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:13,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035004028] [2020-04-18 15:15:13,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:13,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:13,717 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:13,719 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:13,724 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 15:15:13,724 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:13,766 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:13,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:15:13,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:15:13,767 INFO L87 Difference]: Start difference. First operand 910 states and 2754 transitions. Second operand 6 states. [2020-04-18 15:15:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:13,834 INFO L93 Difference]: Finished difference Result 1414 states and 4042 transitions. [2020-04-18 15:15:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 4042 transitions. [2020-04-18 15:15:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:13,838 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:15:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1192691597, now seen corresponding path program 5 times [2020-04-18 15:15:13,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:13,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24038122] [2020-04-18 15:15:13,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:13,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24038122] [2020-04-18 15:15:13,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:13,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:15:13,873 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:13,875 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:13,880 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 15:15:13,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:13,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:15:13,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:13,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:15:13,895 INFO L87 Difference]: Start difference. First operand 1414 states and 4042 transitions. Second operand 5 states. [2020-04-18 15:15:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:13,963 INFO L93 Difference]: Finished difference Result 1696 states and 4699 transitions. [2020-04-18 15:15:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 4699 transitions. [2020-04-18 15:15:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:13,967 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:15:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1221860735, now seen corresponding path program 6 times [2020-04-18 15:15:13,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:13,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332689355] [2020-04-18 15:15:13,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:14,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332689355] [2020-04-18 15:15:14,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:14,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:15:14,007 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:14,008 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:14,014 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 61 transitions. [2020-04-18 15:15:14,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:14,065 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:15:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:15:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:15:14,066 INFO L87 Difference]: Start difference. First operand 1696 states and 4699 transitions. Second operand 5 states. [2020-04-18 15:15:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:14,142 INFO L93 Difference]: Finished difference Result 2041 states and 5296 transitions. [2020-04-18 15:15:14,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 5296 transitions. [2020-04-18 15:15:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:14,146 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:15:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1320022171, now seen corresponding path program 7 times [2020-04-18 15:15:14,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:14,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755612363] [2020-04-18 15:15:14,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:14,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755612363] [2020-04-18 15:15:14,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:14,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:15:14,193 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:14,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:14,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 15:15:14,201 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:14,219 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:15:14,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:15:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:15:14,220 INFO L87 Difference]: Start difference. First operand 2041 states and 5296 transitions. Second operand 6 states. [2020-04-18 15:15:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:14,300 INFO L93 Difference]: Finished difference Result 2091 states and 5344 transitions. [2020-04-18 15:15:14,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 5344 transitions. [2020-04-18 15:15:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 15:15:14,304 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:15:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:15:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 8 times [2020-04-18 15:15:14,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:15:14,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80005067] [2020-04-18 15:15:14,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:15:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:15:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:15:14,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80005067] [2020-04-18 15:15:14,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:15:14,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 15:15:14,355 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:15:14,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:15:14,362 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-04-18 15:15:14,362 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:15:14,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:15:14,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:15:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2020-04-18 15:15:14,385 INFO L87 Difference]: Start difference. First operand 2091 states and 5344 transitions. Second operand 7 states. [2020-04-18 15:15:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:14,473 INFO L93 Difference]: Finished difference Result 2091 states and 5344 transitions. [2020-04-18 15:15:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 5344 transitions. [2020-04-18 15:15:14,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:14,477 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [299982809] [2020-04-18 15:15:14,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:15:14,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 15:15:14,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [299982809] [2020-04-18 15:15:14,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 15:15:14,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:15:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 15:15:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-04-18 15:15:14,479 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 15 states. [2020-04-18 15:15:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:15:15,127 INFO L93 Difference]: Finished difference Result 106 states and 215 transitions. [2020-04-18 15:15:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 15:15:15,128 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2020-04-18 15:15:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:15:15,129 INFO L225 Difference]: With dead ends: 106 [2020-04-18 15:15:15,129 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:15:15,131 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=456, Invalid=2966, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 15:15:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:15:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:15:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:15:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:15:15,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 15:15:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:15:15,132 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:15:15,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 15:15:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:15:15,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:15:15,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:15:15 BasicIcfg [2020-04-18 15:15:15,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:15:15,138 INFO L168 Benchmark]: Toolchain (without parser) took 11405.79 ms. Allocated memory was 144.7 MB in the beginning and 369.1 MB in the end (delta: 224.4 MB). Free memory was 101.6 MB in the beginning and 309.6 MB in the end (delta: -208.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:15:15,138 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:15:15,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.33 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.8 MB in the beginning and 157.8 MB in the end (delta: -58.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:15:15,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.47 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:15:15,140 INFO L168 Benchmark]: Boogie Preprocessor took 25.82 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:15:15,140 INFO L168 Benchmark]: RCFGBuilder took 497.33 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 129.8 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:15:15,141 INFO L168 Benchmark]: TraceAbstraction took 9962.01 ms. Allocated memory was 201.3 MB in the beginning and 369.1 MB in the end (delta: 167.8 MB). Free memory was 129.8 MB in the beginning and 309.6 MB in the end (delta: -179.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:15:15,143 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 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 830.33 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.8 MB in the beginning and 157.8 MB in the end (delta: -58.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.47 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.82 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.33 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 129.8 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9962.01 ms. Allocated memory was 201.3 MB in the beginning and 369.1 MB in the end (delta: 167.8 MB). Free memory was 129.8 MB in the beginning and 309.6 MB in the end (delta: -179.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 295 SDtfs, 825 SDslu, 988 SDs, 0 SdLazy, 701 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 786 GetRequests, 545 SyntacticMatches, 2 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 112 StatesRemovedByMinimization, 2 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...