/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:57:23,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:57:23,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:57:23,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:57:23,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:57:23,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:57:23,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:57:23,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:57:23,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:57:23,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:57:23,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:57:23,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:57:23,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:57:23,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:57:23,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:57:23,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:57:23,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:57:23,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:57:23,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:57:23,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:57:23,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:57:23,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:57:23,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:57:23,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:57:23,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:57:23,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:57:23,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:57:23,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:57:23,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:57:23,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:57:23,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:57:23,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:57:23,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:57:23,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:57:23,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:57:23,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:57:23,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:57:23,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:57:23,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:57:23,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:57:23,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:57:23,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:57:23,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:57:23,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:57:23,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:57:23,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:57:23,511 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:57:23,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:57:23,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:57:23,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:57:23,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:57:23,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:57:23,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:57:23,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:57:23,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:57:23,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:57:23,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:57:23,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:57:23,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:57:23,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:57:23,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:57:23,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:57:23,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:57:23,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:57:23,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:57:23,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:57:23,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:57:23,516 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:57:23,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:57:23,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:57:23,516 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:57:23,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:57:23,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:57:23,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:57:23,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:57:23,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:57:23,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:57:23,820 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:57:23,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2020-04-18 19:57:23,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082bc0f9c/6bba7218e02d4801a20a84cd5ee41ce4/FLAG7fb0ce4e3 [2020-04-18 19:57:24,481 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:57:24,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2020-04-18 19:57:24,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082bc0f9c/6bba7218e02d4801a20a84cd5ee41ce4/FLAG7fb0ce4e3 [2020-04-18 19:57:24,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082bc0f9c/6bba7218e02d4801a20a84cd5ee41ce4 [2020-04-18 19:57:24,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:57:24,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:57:24,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:57:24,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:57:24,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:57:24,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:57:24" (1/1) ... [2020-04-18 19:57:24,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c57c664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:24, skipping insertion in model container [2020-04-18 19:57:24,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:57:24" (1/1) ... [2020-04-18 19:57:24,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:57:24,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:57:25,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:57:25,321 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:57:25,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:57:25,446 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:57:25,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25 WrapperNode [2020-04-18 19:57:25,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:57:25,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:57:25,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:57:25,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:57:25,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:57:25,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:57:25,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:57:25,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:57:25,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... [2020-04-18 19:57:25,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:57:25,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:57:25,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:57:25,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:57:25,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:57:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:57:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:57:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:57:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:57:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:57:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:57:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:57:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:57:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:57:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:57:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:57:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:57:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:57:25,597 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:57:25,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:57:25,950 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:57:25,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:57:25 BoogieIcfgContainer [2020-04-18 19:57:25,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:57:25,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:57:25,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:57:25,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:57:25,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:57:24" (1/3) ... [2020-04-18 19:57:25,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349cb85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:57:25, skipping insertion in model container [2020-04-18 19:57:25,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:57:25" (2/3) ... [2020-04-18 19:57:25,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349cb85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:57:25, skipping insertion in model container [2020-04-18 19:57:25,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:57:25" (3/3) ... [2020-04-18 19:57:25,962 INFO L109 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2020-04-18 19:57:25,972 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:57:25,972 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:57:25,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:57:25,980 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:57:26,006 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,007 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,007 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,008 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,009 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,009 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,010 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,010 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,011 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,011 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,012 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,012 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,012 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,013 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,013 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,014 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,015 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,015 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,022 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,022 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,023 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,023 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,033 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,034 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,034 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,034 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,037 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,038 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,038 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,038 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:57:26,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:57:26,069 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:57:26,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:57:26,070 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:57:26,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:57:26,070 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:57:26,070 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:57:26,070 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:57:26,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:57:26,082 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 19:57:26,523 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8470 states. [2020-04-18 19:57:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states. [2020-04-18 19:57:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 19:57:26,563 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:26,565 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:26,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:26,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1107897661, now seen corresponding path program 1 times [2020-04-18 19:57:26,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:26,579 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2016335604] [2020-04-18 19:57:26,596 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:26,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 19:57:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 19:57:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 19:57:26,616 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1107897661, now seen corresponding path program 2 times [2020-04-18 19:57:26,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:26,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279448306] [2020-04-18 19:57:26,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:27,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279448306] [2020-04-18 19:57:27,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:27,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:57:27,120 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:27,124 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:27,134 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 19:57:27,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:27,207 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:57:27,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:27,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:57:27,214 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-04-18 19:57:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:27,303 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-04-18 19:57:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-04-18 19:57:27,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:27,304 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2016335604] [2020-04-18 19:57:27,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:27,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:57:27,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2016335604] [2020-04-18 19:57:27,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:57:27,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:57:27,312 INFO L87 Difference]: Start difference. First operand 8470 states. Second operand 7 states. [2020-04-18 19:57:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:27,850 INFO L93 Difference]: Finished difference Result 16048 states and 56178 transitions. [2020-04-18 19:57:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:57:27,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-04-18 19:57:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:27,921 INFO L225 Difference]: With dead ends: 16048 [2020-04-18 19:57:27,921 INFO L226 Difference]: Without dead ends: 4765 [2020-04-18 19:57:27,926 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:57:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2020-04-18 19:57:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 4213. [2020-04-18 19:57:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4213 states. [2020-04-18 19:57:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 13853 transitions. [2020-04-18 19:57:28,303 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 13853 transitions. Word has length 34 [2020-04-18 19:57:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:28,305 INFO L479 AbstractCegarLoop]: Abstraction has 4213 states and 13853 transitions. [2020-04-18 19:57:28,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:57:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 13853 transitions. [2020-04-18 19:57:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:57:28,320 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:28,328 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:28,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:28,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1527649090, now seen corresponding path program 1 times [2020-04-18 19:57:28,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:28,330 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1454155554] [2020-04-18 19:57:28,332 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:28,335 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 100 transitions. [2020-04-18 19:57:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-04-18 19:57:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:57:28,341 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:28,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1527649090, now seen corresponding path program 2 times [2020-04-18 19:57:28,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:28,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315977998] [2020-04-18 19:57:28,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:28,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315977998] [2020-04-18 19:57:28,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:28,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:28,530 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:28,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:28,539 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 76 transitions. [2020-04-18 19:57:28,539 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:28,574 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:57:28,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:28,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:57:28,575 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 6 states. [2020-04-18 19:57:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:28,629 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2020-04-18 19:57:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2020-04-18 19:57:28,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:28,630 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1454155554] [2020-04-18 19:57:28,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:28,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:57:28,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1454155554] [2020-04-18 19:57:28,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:57:28,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:28,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:28,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:57:28,632 INFO L87 Difference]: Start difference. First operand 4213 states and 13853 transitions. Second operand 6 states. [2020-04-18 19:57:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:28,752 INFO L93 Difference]: Finished difference Result 5013 states and 16398 transitions. [2020-04-18 19:57:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:57:28,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:57:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:28,781 INFO L225 Difference]: With dead ends: 5013 [2020-04-18 19:57:28,781 INFO L226 Difference]: Without dead ends: 4033 [2020-04-18 19:57:28,782 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:57:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2020-04-18 19:57:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 3977. [2020-04-18 19:57:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3977 states. [2020-04-18 19:57:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 12983 transitions. [2020-04-18 19:57:28,997 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 12983 transitions. Word has length 36 [2020-04-18 19:57:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:28,997 INFO L479 AbstractCegarLoop]: Abstraction has 3977 states and 12983 transitions. [2020-04-18 19:57:28,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:57:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 12983 transitions. [2020-04-18 19:57:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:57:29,006 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:29,006 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:29,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash -132185071, now seen corresponding path program 1 times [2020-04-18 19:57:29,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:29,008 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1968890322] [2020-04-18 19:57:29,009 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:29,012 INFO L259 McrAutomatonBuilder]: Finished intersection with 179 states and 382 transitions. [2020-04-18 19:57:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-04-18 19:57:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:57:29,015 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:29,015 INFO L82 PathProgramCache]: Analyzing trace with hash 812781121, now seen corresponding path program 2 times [2020-04-18 19:57:29,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:29,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164045482] [2020-04-18 19:57:29,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:29,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164045482] [2020-04-18 19:57:29,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:29,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:57:29,171 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:29,175 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:29,186 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 192 transitions. [2020-04-18 19:57:29,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:29,243 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:57:29,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:29,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:57:29,247 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 7 states. [2020-04-18 19:57:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:29,308 INFO L93 Difference]: Finished difference Result 179 states and 382 transitions. [2020-04-18 19:57:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 382 transitions. [2020-04-18 19:57:29,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:29,310 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1968890322] [2020-04-18 19:57:29,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:29,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:57:29,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1968890322] [2020-04-18 19:57:29,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:57:29,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:29,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:29,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:57:29,314 INFO L87 Difference]: Start difference. First operand 3977 states and 12983 transitions. Second operand 7 states. [2020-04-18 19:57:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:29,526 INFO L93 Difference]: Finished difference Result 5185 states and 16952 transitions. [2020-04-18 19:57:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:57:29,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:57:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:29,559 INFO L225 Difference]: With dead ends: 5185 [2020-04-18 19:57:29,560 INFO L226 Difference]: Without dead ends: 4389 [2020-04-18 19:57:29,560 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:57:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2020-04-18 19:57:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3845. [2020-04-18 19:57:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3845 states. [2020-04-18 19:57:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 12509 transitions. [2020-04-18 19:57:29,686 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 12509 transitions. Word has length 38 [2020-04-18 19:57:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:29,687 INFO L479 AbstractCegarLoop]: Abstraction has 3845 states and 12509 transitions. [2020-04-18 19:57:29,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:57:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 12509 transitions. [2020-04-18 19:57:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:29,696 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:29,696 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:29,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1725091133, now seen corresponding path program 1 times [2020-04-18 19:57:29,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:29,697 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2106836726] [2020-04-18 19:57:29,699 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:29,703 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 515 transitions. [2020-04-18 19:57:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states. [2020-04-18 19:57:29,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:29,705 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1624909971, now seen corresponding path program 2 times [2020-04-18 19:57:29,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:29,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689390401] [2020-04-18 19:57:29,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:29,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689390401] [2020-04-18 19:57:29,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:29,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:57:29,976 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:29,981 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:29,995 INFO L259 McrAutomatonBuilder]: Finished intersection with 128 states and 245 transitions. [2020-04-18 19:57:29,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:30,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:57:30,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:30,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:57:30,038 INFO L87 Difference]: Start difference. First operand 230 states. Second operand 7 states. [2020-04-18 19:57:30,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:30,262 INFO L93 Difference]: Finished difference Result 275 states and 573 transitions. [2020-04-18 19:57:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 573 transitions. [2020-04-18 19:57:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:30,264 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:57:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1725091133, now seen corresponding path program 3 times [2020-04-18 19:57:30,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:30,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304830062] [2020-04-18 19:57:30,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:30,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304830062] [2020-04-18 19:57:30,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:30,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:30,392 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:30,396 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:30,412 INFO L259 McrAutomatonBuilder]: Finished intersection with 164 states and 347 transitions. [2020-04-18 19:57:30,412 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:30,428 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:57:30,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:30,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:57:30,432 INFO L87 Difference]: Start difference. First operand 275 states and 573 transitions. Second operand 6 states. [2020-04-18 19:57:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:30,510 INFO L93 Difference]: Finished difference Result 297 states and 604 transitions. [2020-04-18 19:57:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 604 transitions. [2020-04-18 19:57:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:30,511 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:57:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash 197232435, now seen corresponding path program 4 times [2020-04-18 19:57:30,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:30,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458800861] [2020-04-18 19:57:30,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:30,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458800861] [2020-04-18 19:57:30,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:30,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:30,603 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:30,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:30,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 137 states and 273 transitions. [2020-04-18 19:57:30,620 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:30,639 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:57:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:30,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:57:30,640 INFO L87 Difference]: Start difference. First operand 297 states and 604 transitions. Second operand 6 states. [2020-04-18 19:57:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:30,709 INFO L93 Difference]: Finished difference Result 297 states and 604 transitions. [2020-04-18 19:57:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 604 transitions. [2020-04-18 19:57:30,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:30,711 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2106836726] [2020-04-18 19:57:30,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:30,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:57:30,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2106836726] [2020-04-18 19:57:30,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:57:30,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:57:30,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:57:30,712 INFO L87 Difference]: Start difference. First operand 3845 states and 12509 transitions. Second operand 9 states. [2020-04-18 19:57:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:30,846 INFO L93 Difference]: Finished difference Result 6041 states and 19440 transitions. [2020-04-18 19:57:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:57:30,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-04-18 19:57:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:30,893 INFO L225 Difference]: With dead ends: 6041 [2020-04-18 19:57:30,893 INFO L226 Difference]: Without dead ends: 4597 [2020-04-18 19:57:30,894 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:57:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2020-04-18 19:57:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 3533. [2020-04-18 19:57:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3533 states. [2020-04-18 19:57:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 11317 transitions. [2020-04-18 19:57:31,367 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 11317 transitions. Word has length 39 [2020-04-18 19:57:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:31,367 INFO L479 AbstractCegarLoop]: Abstraction has 3533 states and 11317 transitions. [2020-04-18 19:57:31,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:57:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 11317 transitions. [2020-04-18 19:57:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:31,374 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:31,374 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:31,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:31,375 INFO L82 PathProgramCache]: Analyzing trace with hash -807243453, now seen corresponding path program 1 times [2020-04-18 19:57:31,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:31,376 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1571189731] [2020-04-18 19:57:31,377 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:31,380 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 403 transitions. [2020-04-18 19:57:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 19:57:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:31,382 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash -829143941, now seen corresponding path program 2 times [2020-04-18 19:57:31,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:31,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761386134] [2020-04-18 19:57:31,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:31,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761386134] [2020-04-18 19:57:31,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:31,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:31,458 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:31,461 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:31,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 235 transitions. [2020-04-18 19:57:31,473 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:31,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:57:31,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:31,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:57:31,501 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 6 states. [2020-04-18 19:57:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:31,593 INFO L93 Difference]: Finished difference Result 204 states and 430 transitions. [2020-04-18 19:57:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 430 transitions. [2020-04-18 19:57:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:31,593 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:57:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1883356863, now seen corresponding path program 3 times [2020-04-18 19:57:31,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:31,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227024327] [2020-04-18 19:57:31,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:31,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227024327] [2020-04-18 19:57:31,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:31,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:31,685 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:31,687 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:31,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 193 transitions. [2020-04-18 19:57:31,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:31,710 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:57:31,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:31,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:57:31,710 INFO L87 Difference]: Start difference. First operand 204 states and 430 transitions. Second operand 6 states. [2020-04-18 19:57:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:31,808 INFO L93 Difference]: Finished difference Result 204 states and 430 transitions. [2020-04-18 19:57:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 430 transitions. [2020-04-18 19:57:31,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:31,809 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1571189731] [2020-04-18 19:57:31,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:31,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:57:31,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1571189731] [2020-04-18 19:57:31,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:57:31,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:31,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:31,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:57:31,811 INFO L87 Difference]: Start difference. First operand 3533 states and 11317 transitions. Second operand 7 states. [2020-04-18 19:57:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:31,906 INFO L93 Difference]: Finished difference Result 5273 states and 16706 transitions. [2020-04-18 19:57:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:57:31,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:57:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:31,919 INFO L225 Difference]: With dead ends: 5273 [2020-04-18 19:57:31,920 INFO L226 Difference]: Without dead ends: 3893 [2020-04-18 19:57:31,920 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:57:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2020-04-18 19:57:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3237. [2020-04-18 19:57:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-04-18 19:57:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 10225 transitions. [2020-04-18 19:57:32,010 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 10225 transitions. Word has length 39 [2020-04-18 19:57:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:32,011 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 10225 transitions. [2020-04-18 19:57:32,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:57:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 10225 transitions. [2020-04-18 19:57:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:32,017 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:32,017 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:32,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:32,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1595970777, now seen corresponding path program 1 times [2020-04-18 19:57:32,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:32,018 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1322372834] [2020-04-18 19:57:32,019 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:32,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 435 transitions. [2020-04-18 19:57:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-04-18 19:57:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:32,025 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2006122351, now seen corresponding path program 2 times [2020-04-18 19:57:32,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:32,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337808936] [2020-04-18 19:57:32,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:32,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337808936] [2020-04-18 19:57:32,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:32,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:57:32,143 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:32,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:32,155 INFO L259 McrAutomatonBuilder]: Finished intersection with 96 states and 163 transitions. [2020-04-18 19:57:32,155 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:32,202 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:57:32,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:57:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:57:32,203 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 7 states. [2020-04-18 19:57:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:32,444 INFO L93 Difference]: Finished difference Result 255 states and 523 transitions. [2020-04-18 19:57:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 523 transitions. [2020-04-18 19:57:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:32,445 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:57:32,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:32,446 INFO L82 PathProgramCache]: Analyzing trace with hash -715424515, now seen corresponding path program 3 times [2020-04-18 19:57:32,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:32,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305050864] [2020-04-18 19:57:32,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:32,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305050864] [2020-04-18 19:57:32,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:32,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:32,516 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:32,519 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:32,531 INFO L259 McrAutomatonBuilder]: Finished intersection with 113 states and 209 transitions. [2020-04-18 19:57:32,531 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:32,543 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:57:32,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:32,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:57:32,544 INFO L87 Difference]: Start difference. First operand 255 states and 523 transitions. Second operand 6 states. [2020-04-18 19:57:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:32,635 INFO L93 Difference]: Finished difference Result 283 states and 559 transitions. [2020-04-18 19:57:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 559 transitions. [2020-04-18 19:57:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:57:32,636 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:57:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1595970777, now seen corresponding path program 4 times [2020-04-18 19:57:32,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:32,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172619377] [2020-04-18 19:57:32,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:32,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172619377] [2020-04-18 19:57:32,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:32,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:57:32,751 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:32,756 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:32,774 INFO L259 McrAutomatonBuilder]: Finished intersection with 136 states and 267 transitions. [2020-04-18 19:57:32,775 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:33,110 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 25 times. [2020-04-18 19:57:33,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:57:33,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:57:33,111 INFO L87 Difference]: Start difference. First operand 283 states and 559 transitions. Second operand 17 states. [2020-04-18 19:57:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:33,409 INFO L93 Difference]: Finished difference Result 307 states and 597 transitions. [2020-04-18 19:57:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 597 transitions. [2020-04-18 19:57:33,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:33,410 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1322372834] [2020-04-18 19:57:33,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:33,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:57:33,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1322372834] [2020-04-18 19:57:33,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:57:33,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:57:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:57:33,412 INFO L87 Difference]: Start difference. First operand 3237 states and 10225 transitions. Second operand 19 states. [2020-04-18 19:57:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:33,737 INFO L93 Difference]: Finished difference Result 5585 states and 17550 transitions. [2020-04-18 19:57:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:57:33,738 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-04-18 19:57:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:33,750 INFO L225 Difference]: With dead ends: 5585 [2020-04-18 19:57:33,751 INFO L226 Difference]: Without dead ends: 4061 [2020-04-18 19:57:33,751 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:57:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2020-04-18 19:57:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 2941. [2020-04-18 19:57:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2941 states. [2020-04-18 19:57:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 9169 transitions. [2020-04-18 19:57:33,877 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 9169 transitions. Word has length 39 [2020-04-18 19:57:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:33,877 INFO L479 AbstractCegarLoop]: Abstraction has 2941 states and 9169 transitions. [2020-04-18 19:57:33,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:57:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 9169 transitions. [2020-04-18 19:57:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:57:33,883 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:33,883 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:33,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1609184786, now seen corresponding path program 1 times [2020-04-18 19:57:33,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:33,884 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1724050906] [2020-04-18 19:57:33,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:33,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 413 states and 1144 transitions. [2020-04-18 19:57:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-04-18 19:57:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:57:33,896 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1740816318, now seen corresponding path program 2 times [2020-04-18 19:57:33,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:33,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525337079] [2020-04-18 19:57:33,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:33,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525337079] [2020-04-18 19:57:33,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:33,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:33,970 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:33,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:33,995 INFO L259 McrAutomatonBuilder]: Finished intersection with 190 states and 446 transitions. [2020-04-18 19:57:33,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:34,024 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:57:34,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:34,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:57:34,025 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 6 states. [2020-04-18 19:57:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:34,112 INFO L93 Difference]: Finished difference Result 467 states and 1261 transitions. [2020-04-18 19:57:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1261 transitions. [2020-04-18 19:57:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:57:34,114 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:57:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:34,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1609184786, now seen corresponding path program 3 times [2020-04-18 19:57:34,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:34,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113108385] [2020-04-18 19:57:34,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:34,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113108385] [2020-04-18 19:57:34,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:34,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:34,188 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:34,191 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:34,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 257 states and 664 transitions. [2020-04-18 19:57:34,218 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:34,272 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:57:34,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:34,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:57:34,272 INFO L87 Difference]: Start difference. First operand 467 states and 1261 transitions. Second operand 6 states. [2020-04-18 19:57:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:34,329 INFO L93 Difference]: Finished difference Result 467 states and 1261 transitions. [2020-04-18 19:57:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1261 transitions. [2020-04-18 19:57:34,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:34,330 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1724050906] [2020-04-18 19:57:34,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:34,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:57:34,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1724050906] [2020-04-18 19:57:34,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:57:34,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:34,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:57:34,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:57:34,332 INFO L87 Difference]: Start difference. First operand 2941 states and 9169 transitions. Second operand 10 states. [2020-04-18 19:57:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:34,579 INFO L93 Difference]: Finished difference Result 3694 states and 11270 transitions. [2020-04-18 19:57:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:57:34,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-04-18 19:57:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:34,591 INFO L225 Difference]: With dead ends: 3694 [2020-04-18 19:57:34,591 INFO L226 Difference]: Without dead ends: 2576 [2020-04-18 19:57:34,592 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:57:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2020-04-18 19:57:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2576. [2020-04-18 19:57:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2020-04-18 19:57:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 7831 transitions. [2020-04-18 19:57:34,654 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 7831 transitions. Word has length 40 [2020-04-18 19:57:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:34,654 INFO L479 AbstractCegarLoop]: Abstraction has 2576 states and 7831 transitions. [2020-04-18 19:57:34,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:57:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 7831 transitions. [2020-04-18 19:57:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:57:34,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:34,662 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:34,662 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash -59821741, now seen corresponding path program 1 times [2020-04-18 19:57:34,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:34,663 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [472267261] [2020-04-18 19:57:34,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:34,677 INFO L259 McrAutomatonBuilder]: Finished intersection with 671 states and 1970 transitions. [2020-04-18 19:57:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states. [2020-04-18 19:57:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:57:34,686 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:34,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:34,687 INFO L82 PathProgramCache]: Analyzing trace with hash 885144451, now seen corresponding path program 2 times [2020-04-18 19:57:34,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:34,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515303002] [2020-04-18 19:57:34,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:34,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515303002] [2020-04-18 19:57:34,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:34,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:34,777 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:34,781 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:34,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 170 states and 356 transitions. [2020-04-18 19:57:34,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:34,841 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:57:34,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:57:34,844 INFO L87 Difference]: Start difference. First operand 671 states. Second operand 6 states. [2020-04-18 19:57:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:34,942 INFO L93 Difference]: Finished difference Result 761 states and 2177 transitions. [2020-04-18 19:57:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2177 transitions. [2020-04-18 19:57:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:57:34,944 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:57:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash -59821741, now seen corresponding path program 3 times [2020-04-18 19:57:34,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:34,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764753754] [2020-04-18 19:57:34,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:35,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764753754] [2020-04-18 19:57:35,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:35,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:57:35,076 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:35,081 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:35,167 INFO L259 McrAutomatonBuilder]: Finished intersection with 227 states and 524 transitions. [2020-04-18 19:57:35,167 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:35,295 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:57:35,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:57:35,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:57:35,298 INFO L87 Difference]: Start difference. First operand 761 states and 2177 transitions. Second operand 8 states. [2020-04-18 19:57:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:35,416 INFO L93 Difference]: Finished difference Result 761 states and 2177 transitions. [2020-04-18 19:57:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2177 transitions. [2020-04-18 19:57:35,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:35,418 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [472267261] [2020-04-18 19:57:35,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:35,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:57:35,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [472267261] [2020-04-18 19:57:35,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:57:35,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:35,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:57:35,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:57:35,420 INFO L87 Difference]: Start difference. First operand 2576 states and 7831 transitions. Second operand 12 states. [2020-04-18 19:57:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:35,640 INFO L93 Difference]: Finished difference Result 2549 states and 7498 transitions. [2020-04-18 19:57:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:57:35,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-04-18 19:57:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:35,649 INFO L225 Difference]: With dead ends: 2549 [2020-04-18 19:57:35,650 INFO L226 Difference]: Without dead ends: 1581 [2020-04-18 19:57:35,650 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:57:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-04-18 19:57:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2020-04-18 19:57:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-04-18 19:57:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 4525 transitions. [2020-04-18 19:57:35,688 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 4525 transitions. Word has length 42 [2020-04-18 19:57:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:35,688 INFO L479 AbstractCegarLoop]: Abstraction has 1581 states and 4525 transitions. [2020-04-18 19:57:35,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:57:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 4525 transitions. [2020-04-18 19:57:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:57:35,691 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:57:35,692 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:57:35,692 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:57:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2001898960, now seen corresponding path program 1 times [2020-04-18 19:57:35,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:57:35,698 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2112087838] [2020-04-18 19:57:35,699 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:35,722 INFO L259 McrAutomatonBuilder]: Finished intersection with 1061 states and 3292 transitions. [2020-04-18 19:57:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states. [2020-04-18 19:57:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:57:35,733 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:57:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1777911108, now seen corresponding path program 2 times [2020-04-18 19:57:35,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:35,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605591193] [2020-04-18 19:57:35,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605591193] [2020-04-18 19:57:35,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:35,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:57:35,814 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:35,820 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:35,854 INFO L259 McrAutomatonBuilder]: Finished intersection with 317 states and 736 transitions. [2020-04-18 19:57:35,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:35,886 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:57:35,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:57:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:57:35,887 INFO L87 Difference]: Start difference. First operand 1061 states. Second operand 6 states. [2020-04-18 19:57:36,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:36,078 INFO L93 Difference]: Finished difference Result 1879 states and 5613 transitions. [2020-04-18 19:57:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 5613 transitions. [2020-04-18 19:57:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:57:36,082 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:57:36,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:57:36,082 INFO L82 PathProgramCache]: Analyzing trace with hash 832944916, now seen corresponding path program 3 times [2020-04-18 19:57:36,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:57:36,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833272338] [2020-04-18 19:57:36,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:57:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:57:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:57:36,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833272338] [2020-04-18 19:57:36,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:57:36,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:57:36,197 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:57:36,201 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:57:36,241 INFO L259 McrAutomatonBuilder]: Finished intersection with 299 states and 693 transitions. [2020-04-18 19:57:36,241 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:57:36,432 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:57:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:57:36,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:57:36,433 INFO L87 Difference]: Start difference. First operand 1879 states and 5613 transitions. Second operand 12 states. [2020-04-18 19:57:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:36,869 INFO L93 Difference]: Finished difference Result 1885 states and 5619 transitions. [2020-04-18 19:57:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 5619 transitions. [2020-04-18 19:57:36,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:36,873 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2112087838] [2020-04-18 19:57:36,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:57:36,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:57:36,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2112087838] [2020-04-18 19:57:36,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:57:36,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:57:36,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:57:36,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:57:36,875 INFO L87 Difference]: Start difference. First operand 1581 states and 4525 transitions. Second operand 16 states. [2020-04-18 19:57:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:57:37,157 INFO L93 Difference]: Finished difference Result 1068 states and 2887 transitions. [2020-04-18 19:57:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:57:37,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-04-18 19:57:37,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:57:37,158 INFO L225 Difference]: With dead ends: 1068 [2020-04-18 19:57:37,158 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:57:37,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:57:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:57:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:57:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:57:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:57:37,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-04-18 19:57:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:57:37,161 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:57:37,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:57:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:57:37,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:57:37,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:57:37 BasicIcfg [2020-04-18 19:57:37,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:57:37,168 INFO L168 Benchmark]: Toolchain (without parser) took 12384.19 ms. Allocated memory was 146.8 MB in the beginning and 636.0 MB in the end (delta: 489.2 MB). Free memory was 101.6 MB in the beginning and 459.7 MB in the end (delta: -358.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,169 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.33 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 160.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.79 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,171 INFO L168 Benchmark]: Boogie Preprocessor took 26.83 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,171 INFO L168 Benchmark]: RCFGBuilder took 424.84 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 135.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,172 INFO L168 Benchmark]: TraceAbstraction took 11211.39 ms. Allocated memory was 203.9 MB in the beginning and 636.0 MB in the end (delta: 432.0 MB). Free memory was 135.1 MB in the beginning and 459.7 MB in the end (delta: -324.6 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:57:37,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.33 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 99.8 MB in the beginning and 160.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.79 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.83 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.84 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 135.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11211.39 ms. Allocated memory was 203.9 MB in the beginning and 636.0 MB in the end (delta: 432.0 MB). Free memory was 135.1 MB in the beginning and 459.7 MB in the end (delta: -324.6 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 895 SDtfs, 2137 SDslu, 5066 SDs, 0 SdLazy, 787 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 983 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8470occurred 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: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 3992 StatesRemovedByMinimization, 6 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...