/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:24:14,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:24:14,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:24:14,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:24:14,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:24:14,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:24:14,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:24:14,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:24:14,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:24:14,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:24:14,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:24:14,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:24:14,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:24:14,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:24:14,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:24:14,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:24:14,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:24:14,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:24:14,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:24:14,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:24:14,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:24:14,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:24:14,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:24:14,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:24:14,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:24:14,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:24:14,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:24:14,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:24:14,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:24:14,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:24:14,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:24:14,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:24:14,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:24:14,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:24:14,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:24:14,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:24:14,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:24:14,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:24:14,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:24:14,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:24:14,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:24:14,754 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 19:24:14,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:24:14,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:24:14,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:24:14,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:24:14,776 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:24:14,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:24:14,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:24:14,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:24:14,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:24:14,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:24:14,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:24:14,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:24:14,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:24:14,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:24:14,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:24:14,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:24:14,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:24:14,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:24:14,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:24:14,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:24:14,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:24:14,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:24:14,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:24:14,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:24:14,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:24:14,781 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:24:14,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:24:14,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:24:14,782 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:24:14,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:24:14,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:24:15,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:24:15,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:24:15,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:24:15,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:24:15,130 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:24:15,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-18 19:24:15,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5800f02f/9581679f8f664aa096f84879619c55b3/FLAG251cb2f1a [2020-04-18 19:24:15,753 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:24:15,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-18 19:24:15,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5800f02f/9581679f8f664aa096f84879619c55b3/FLAG251cb2f1a [2020-04-18 19:24:16,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5800f02f/9581679f8f664aa096f84879619c55b3 [2020-04-18 19:24:16,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:24:16,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:24:16,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:24:16,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:24:16,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:24:16,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24efc9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16, skipping insertion in model container [2020-04-18 19:24:16,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:24:16,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:24:16,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:24:16,646 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:24:16,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:24:16,821 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:24:16,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16 WrapperNode [2020-04-18 19:24:16,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:24:16,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:24:16,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:24:16,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:24:16,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:24:16,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:24:16,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:24:16,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:24:16,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (1/1) ... [2020-04-18 19:24:16,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:24:16,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:24:16,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:24:16,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:24:16,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (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 19:24:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:24:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:24:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:24:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:24:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:24:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:24:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:24:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:24:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:24:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:24:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:24:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:24:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:24:16,979 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 19:24:17,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:24:17,408 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:24:17,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:24:17 BoogieIcfgContainer [2020-04-18 19:24:17,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:24:17,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:24:17,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:24:17,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:24:17,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:24:16" (1/3) ... [2020-04-18 19:24:17,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:24:17, skipping insertion in model container [2020-04-18 19:24:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:24:16" (2/3) ... [2020-04-18 19:24:17,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:24:17, skipping insertion in model container [2020-04-18 19:24:17,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:24:17" (3/3) ... [2020-04-18 19:24:17,428 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-04-18 19:24:17,438 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:24:17,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:24:17,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:24:17,448 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:24:17,484 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,485 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,485 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,486 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,487 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,487 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,488 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,488 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,488 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,488 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,489 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,489 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,491 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,491 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,491 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,492 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,492 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,492 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,499 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,499 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,499 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,500 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,510 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,511 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,511 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,511 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,516 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,516 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,516 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,517 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:24:17,541 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:24:17,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:24:17,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:24:17,565 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:24:17,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:24:17,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:24:17,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:24:17,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:24:17,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:24:17,578 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 19:24:17,960 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7295 states. [2020-04-18 19:24:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states. [2020-04-18 19:24:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:24:17,988 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:17,989 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] [2020-04-18 19:24:17,990 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:17,997 INFO L82 PathProgramCache]: Analyzing trace with hash 224354021, now seen corresponding path program 1 times [2020-04-18 19:24:18,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:18,004 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [357192968] [2020-04-18 19:24:18,020 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:18,034 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:24:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:24:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:24:18,037 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:18,037 INFO L82 PathProgramCache]: Analyzing trace with hash 224354021, now seen corresponding path program 2 times [2020-04-18 19:24:18,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:18,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422394592] [2020-04-18 19:24:18,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:18,493 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 19:24:18,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422394592] [2020-04-18 19:24:18,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:18,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:18,497 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:18,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:18,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:24:18,507 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:18,563 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:24:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:24:18,569 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2020-04-18 19:24:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:18,649 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:24:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:24:18,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:18,651 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [357192968] [2020-04-18 19:24:18,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:18,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:24:18,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [357192968] [2020-04-18 19:24:18,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:24:18,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:24:18,660 INFO L87 Difference]: Start difference. First operand 7295 states. Second operand 7 states. [2020-04-18 19:24:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:19,195 INFO L93 Difference]: Finished difference Result 15923 states and 54353 transitions. [2020-04-18 19:24:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:24:19,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-04-18 19:24:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:19,254 INFO L225 Difference]: With dead ends: 15923 [2020-04-18 19:24:19,255 INFO L226 Difference]: Without dead ends: 5053 [2020-04-18 19:24:19,256 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 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 19:24:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2020-04-18 19:24:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 4141. [2020-04-18 19:24:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4141 states. [2020-04-18 19:24:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 13758 transitions. [2020-04-18 19:24:19,554 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 13758 transitions. Word has length 35 [2020-04-18 19:24:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:19,557 INFO L479 AbstractCegarLoop]: Abstraction has 4141 states and 13758 transitions. [2020-04-18 19:24:19,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:24:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 13758 transitions. [2020-04-18 19:24:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:24:19,573 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:19,581 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] [2020-04-18 19:24:19,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash -657669308, now seen corresponding path program 1 times [2020-04-18 19:24:19,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:19,583 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [561319146] [2020-04-18 19:24:19,584 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:19,586 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 101 transitions. [2020-04-18 19:24:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 19:24:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:24:19,592 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:19,592 INFO L82 PathProgramCache]: Analyzing trace with hash -657669308, now seen corresponding path program 2 times [2020-04-18 19:24:19,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:19,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559807833] [2020-04-18 19:24:19,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:19,856 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 19:24:19,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559807833] [2020-04-18 19:24:19,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:19,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:19,858 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:19,861 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:19,866 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 77 transitions. [2020-04-18 19:24:19,867 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:19,919 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:24:19,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:19,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:24:19,921 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 7 states. [2020-04-18 19:24:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:19,996 INFO L93 Difference]: Finished difference Result 70 states and 101 transitions. [2020-04-18 19:24:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2020-04-18 19:24:19,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:19,997 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [561319146] [2020-04-18 19:24:19,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:19,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:24:19,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [561319146] [2020-04-18 19:24:20,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:24:20,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:20,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:24:20,006 INFO L87 Difference]: Start difference. First operand 4141 states and 13758 transitions. Second operand 7 states. [2020-04-18 19:24:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:20,301 INFO L93 Difference]: Finished difference Result 6081 states and 19890 transitions. [2020-04-18 19:24:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:24:20,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:24:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:20,336 INFO L225 Difference]: With dead ends: 6081 [2020-04-18 19:24:20,337 INFO L226 Difference]: Without dead ends: 4633 [2020-04-18 19:24:20,341 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 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 19:24:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2020-04-18 19:24:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 3961. [2020-04-18 19:24:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3961 states. [2020-04-18 19:24:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 13090 transitions. [2020-04-18 19:24:20,481 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 13090 transitions. Word has length 37 [2020-04-18 19:24:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:20,481 INFO L479 AbstractCegarLoop]: Abstraction has 3961 states and 13090 transitions. [2020-04-18 19:24:20,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:24:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 13090 transitions. [2020-04-18 19:24:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:24:20,491 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:20,491 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 19:24:20,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:20,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1578276229, now seen corresponding path program 1 times [2020-04-18 19:24:20,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:20,493 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1284337856] [2020-04-18 19:24:20,494 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:20,497 INFO L259 McrAutomatonBuilder]: Finished intersection with 148 states and 303 transitions. [2020-04-18 19:24:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-04-18 19:24:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:24:20,499 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:20,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1578276229, now seen corresponding path program 2 times [2020-04-18 19:24:20,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:20,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071876728] [2020-04-18 19:24:20,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:20,700 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 19:24:20,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071876728] [2020-04-18 19:24:20,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:20,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:20,701 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:20,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:20,715 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 183 transitions. [2020-04-18 19:24:20,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:20,799 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:24:20,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:20,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:24:20,800 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 8 states. [2020-04-18 19:24:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:20,867 INFO L93 Difference]: Finished difference Result 148 states and 303 transitions. [2020-04-18 19:24:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-04-18 19:24:20,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:20,869 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1284337856] [2020-04-18 19:24:20,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:20,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:24:20,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1284337856] [2020-04-18 19:24:20,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:24:20,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:20,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:20,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:24:20,871 INFO L87 Difference]: Start difference. First operand 3961 states and 13090 transitions. Second operand 8 states. [2020-04-18 19:24:21,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:21,254 INFO L93 Difference]: Finished difference Result 6009 states and 19390 transitions. [2020-04-18 19:24:21,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:24:21,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-04-18 19:24:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:21,307 INFO L225 Difference]: With dead ends: 6009 [2020-04-18 19:24:21,308 INFO L226 Difference]: Without dead ends: 4873 [2020-04-18 19:24:21,309 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:24:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-04-18 19:24:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 3497. [2020-04-18 19:24:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3497 states. [2020-04-18 19:24:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 11486 transitions. [2020-04-18 19:24:21,470 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 11486 transitions. Word has length 39 [2020-04-18 19:24:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:21,471 INFO L479 AbstractCegarLoop]: Abstraction has 3497 states and 11486 transitions. [2020-04-18 19:24:21,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:24:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 11486 transitions. [2020-04-18 19:24:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:24:21,482 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:21,483 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 19:24:21,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash 353597745, now seen corresponding path program 1 times [2020-04-18 19:24:21,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:21,488 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1734825894] [2020-04-18 19:24:21,490 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:21,494 INFO L259 McrAutomatonBuilder]: Finished intersection with 231 states and 516 transitions. [2020-04-18 19:24:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2020-04-18 19:24:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:24:21,497 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1470806219, now seen corresponding path program 2 times [2020-04-18 19:24:21,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:21,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571414903] [2020-04-18 19:24:21,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:21,677 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 19:24:21,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571414903] [2020-04-18 19:24:21,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:21,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:21,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:21,684 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:21,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 129 states and 246 transitions. [2020-04-18 19:24:21,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:21,886 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:24:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:24:21,887 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 8 states. [2020-04-18 19:24:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:21,972 INFO L93 Difference]: Finished difference Result 231 states and 516 transitions. [2020-04-18 19:24:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 516 transitions. [2020-04-18 19:24:21,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:21,974 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1734825894] [2020-04-18 19:24:21,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:21,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:24:21,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1734825894] [2020-04-18 19:24:21,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:24:21,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:21,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:24:21,975 INFO L87 Difference]: Start difference. First operand 3497 states and 11486 transitions. Second operand 8 states. [2020-04-18 19:24:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:22,105 INFO L93 Difference]: Finished difference Result 5001 states and 16114 transitions. [2020-04-18 19:24:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:24:22,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 19:24:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:22,117 INFO L225 Difference]: With dead ends: 5001 [2020-04-18 19:24:22,117 INFO L226 Difference]: Without dead ends: 2471 [2020-04-18 19:24:22,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:24:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-04-18 19:24:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2087. [2020-04-18 19:24:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-04-18 19:24:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 6573 transitions. [2020-04-18 19:24:22,188 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 6573 transitions. Word has length 40 [2020-04-18 19:24:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:22,188 INFO L479 AbstractCegarLoop]: Abstraction has 2087 states and 6573 transitions. [2020-04-18 19:24:22,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:24:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 6573 transitions. [2020-04-18 19:24:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:24:22,194 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:22,194 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 19:24:22,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:22,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:22,195 INFO L82 PathProgramCache]: Analyzing trace with hash 647730612, now seen corresponding path program 1 times [2020-04-18 19:24:22,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:22,195 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2099058504] [2020-04-18 19:24:22,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:22,208 INFO L259 McrAutomatonBuilder]: Finished intersection with 547 states and 1566 transitions. [2020-04-18 19:24:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states. [2020-04-18 19:24:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:24:22,215 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash 228063796, now seen corresponding path program 2 times [2020-04-18 19:24:22,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:22,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384786153] [2020-04-18 19:24:22,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:22,339 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 19:24:22,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384786153] [2020-04-18 19:24:22,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:22,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:22,341 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:22,349 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:22,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 197 states and 458 transitions. [2020-04-18 19:24:22,384 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:22,470 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:24:22,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:24:22,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:24:22,471 INFO L87 Difference]: Start difference. First operand 547 states. Second operand 9 states. [2020-04-18 19:24:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:22,799 INFO L93 Difference]: Finished difference Result 602 states and 1652 transitions. [2020-04-18 19:24:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1652 transitions. [2020-04-18 19:24:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:24:22,801 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1487487922, now seen corresponding path program 3 times [2020-04-18 19:24:22,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:22,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919687618] [2020-04-18 19:24:22,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:22,896 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 19:24:22,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919687618] [2020-04-18 19:24:22,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:22,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:24:22,897 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:22,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:22,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 164 states and 356 transitions. [2020-04-18 19:24:22,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:23,004 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:24:23,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:24:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:24:23,005 INFO L87 Difference]: Start difference. First operand 602 states and 1652 transitions. Second operand 6 states. [2020-04-18 19:24:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:23,071 INFO L93 Difference]: Finished difference Result 602 states and 1652 transitions. [2020-04-18 19:24:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1652 transitions. [2020-04-18 19:24:23,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:23,073 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2099058504] [2020-04-18 19:24:23,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:23,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:24:23,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2099058504] [2020-04-18 19:24:23,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:24:23,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:23,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:24:23,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:24:23,075 INFO L87 Difference]: Start difference. First operand 2087 states and 6573 transitions. Second operand 13 states. [2020-04-18 19:24:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:23,882 INFO L93 Difference]: Finished difference Result 3101 states and 9627 transitions. [2020-04-18 19:24:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 19:24:23,883 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-04-18 19:24:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:23,891 INFO L225 Difference]: With dead ends: 3101 [2020-04-18 19:24:23,891 INFO L226 Difference]: Without dead ends: 2285 [2020-04-18 19:24:23,893 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=457, Invalid=1993, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:24:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-04-18 19:24:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1925. [2020-04-18 19:24:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-04-18 19:24:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 5975 transitions. [2020-04-18 19:24:23,953 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 5975 transitions. Word has length 42 [2020-04-18 19:24:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:23,954 INFO L479 AbstractCegarLoop]: Abstraction has 1925 states and 5975 transitions. [2020-04-18 19:24:23,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:24:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 5975 transitions. [2020-04-18 19:24:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:24:23,959 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:23,959 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:24:23,959 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:23,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1643502774, now seen corresponding path program 1 times [2020-04-18 19:24:23,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:23,960 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1838093212] [2020-04-18 19:24:23,961 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:23,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 703 states and 2087 transitions. [2020-04-18 19:24:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states. [2020-04-18 19:24:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:24:23,984 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1200069992, now seen corresponding path program 2 times [2020-04-18 19:24:23,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:23,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364767327] [2020-04-18 19:24:23,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:24,152 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 19:24:24,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364767327] [2020-04-18 19:24:24,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:24,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:24,154 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:24,157 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:24,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 251 states and 611 transitions. [2020-04-18 19:24:24,192 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:24,252 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:24:24,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:24:24,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:24:24,253 INFO L87 Difference]: Start difference. First operand 703 states. Second operand 9 states. [2020-04-18 19:24:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:24,562 INFO L93 Difference]: Finished difference Result 775 states and 2206 transitions. [2020-04-18 19:24:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2206 transitions. [2020-04-18 19:24:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:24:24,564 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1865457084, now seen corresponding path program 3 times [2020-04-18 19:24:24,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:24,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636641758] [2020-04-18 19:24:24,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:24,684 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 19:24:24,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636641758] [2020-04-18 19:24:24,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:24,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:24,686 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:24,692 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:24,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 215 states and 504 transitions. [2020-04-18 19:24:24,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:24,858 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:24:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:24:24,859 INFO L87 Difference]: Start difference. First operand 775 states and 2206 transitions. Second operand 7 states. [2020-04-18 19:24:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:25,002 INFO L93 Difference]: Finished difference Result 775 states and 2206 transitions. [2020-04-18 19:24:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2206 transitions. [2020-04-18 19:24:25,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:25,004 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1838093212] [2020-04-18 19:24:25,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:25,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:24:25,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1838093212] [2020-04-18 19:24:25,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:24:25,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:25,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:24:25,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:24:25,006 INFO L87 Difference]: Start difference. First operand 1925 states and 5975 transitions. Second operand 14 states. [2020-04-18 19:24:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:25,921 INFO L93 Difference]: Finished difference Result 2642 states and 7965 transitions. [2020-04-18 19:24:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 19:24:25,924 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-04-18 19:24:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:25,929 INFO L225 Difference]: With dead ends: 2642 [2020-04-18 19:24:25,930 INFO L226 Difference]: Without dead ends: 1694 [2020-04-18 19:24:25,931 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=451, Invalid=2305, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 19:24:25,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-04-18 19:24:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1478. [2020-04-18 19:24:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-04-18 19:24:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4372 transitions. [2020-04-18 19:24:25,967 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4372 transitions. Word has length 43 [2020-04-18 19:24:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:25,968 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 4372 transitions. [2020-04-18 19:24:25,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:24:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4372 transitions. [2020-04-18 19:24:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:25,971 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:25,971 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 19:24:25,971 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2087646303, now seen corresponding path program 1 times [2020-04-18 19:24:25,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:25,972 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1648207567] [2020-04-18 19:24:25,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:25,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 875 states and 2648 transitions. [2020-04-18 19:24:25,998 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states. [2020-04-18 19:24:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:26,001 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1613831113, now seen corresponding path program 2 times [2020-04-18 19:24:26,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:26,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330980145] [2020-04-18 19:24:26,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:26,080 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 19:24:26,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330980145] [2020-04-18 19:24:26,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:26,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:26,082 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:26,085 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:26,124 INFO L259 McrAutomatonBuilder]: Finished intersection with 286 states and 708 transitions. [2020-04-18 19:24:26,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:26,154 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:24:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:24:26,155 INFO L87 Difference]: Start difference. First operand 875 states. Second operand 7 states. [2020-04-18 19:24:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:26,349 INFO L93 Difference]: Finished difference Result 1019 states and 2958 transitions. [2020-04-18 19:24:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 2958 transitions. [2020-04-18 19:24:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:26,351 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:26,352 INFO L82 PathProgramCache]: Analyzing trace with hash -374030161, now seen corresponding path program 3 times [2020-04-18 19:24:26,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:26,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207561310] [2020-04-18 19:24:26,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:26,462 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 19:24:26,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207561310] [2020-04-18 19:24:26,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:26,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:26,464 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:26,467 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:26,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 553 transitions. [2020-04-18 19:24:26,499 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:26,569 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:24:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:26,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:24:26,570 INFO L87 Difference]: Start difference. First operand 1019 states and 2958 transitions. Second operand 7 states. [2020-04-18 19:24:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:26,771 INFO L93 Difference]: Finished difference Result 1067 states and 3024 transitions. [2020-04-18 19:24:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 3024 transitions. [2020-04-18 19:24:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:24:26,775 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:24:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:26,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2087646303, now seen corresponding path program 4 times [2020-04-18 19:24:26,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:26,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762890724] [2020-04-18 19:24:26,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:26,898 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 19:24:26,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762890724] [2020-04-18 19:24:26,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:26,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:26,900 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:26,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:26,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 223 transitions. [2020-04-18 19:24:26,921 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:26,997 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:24:26,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:26,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:24:26,998 INFO L87 Difference]: Start difference. First operand 1067 states and 3024 transitions. Second operand 8 states. [2020-04-18 19:24:27,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:27,198 INFO L93 Difference]: Finished difference Result 1067 states and 3024 transitions. [2020-04-18 19:24:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 3024 transitions. [2020-04-18 19:24:27,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:27,201 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1648207567] [2020-04-18 19:24:27,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:27,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:24:27,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1648207567] [2020-04-18 19:24:27,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:24:27,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:27,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:24:27,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:24:27,203 INFO L87 Difference]: Start difference. First operand 1478 states and 4372 transitions. Second operand 14 states. [2020-04-18 19:24:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:27,580 INFO L93 Difference]: Finished difference Result 1298 states and 3718 transitions. [2020-04-18 19:24:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:24:27,581 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-04-18 19:24:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:27,584 INFO L225 Difference]: With dead ends: 1298 [2020-04-18 19:24:27,585 INFO L226 Difference]: Without dead ends: 776 [2020-04-18 19:24:27,585 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=1565, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:24:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-04-18 19:24:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 740. [2020-04-18 19:24:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-04-18 19:24:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2046 transitions. [2020-04-18 19:24:27,603 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2046 transitions. Word has length 44 [2020-04-18 19:24:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:27,603 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 2046 transitions. [2020-04-18 19:24:27,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:24:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2046 transitions. [2020-04-18 19:24:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:27,605 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:24:27,605 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:24:27,606 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:24:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1399559616, now seen corresponding path program 1 times [2020-04-18 19:24:27,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:24:27,606 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1244451097] [2020-04-18 19:24:27,608 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:27,648 INFO L259 McrAutomatonBuilder]: Finished intersection with 1435 states and 4566 transitions. [2020-04-18 19:24:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states. [2020-04-18 19:24:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:27,666 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:24:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:27,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1507543530, now seen corresponding path program 2 times [2020-04-18 19:24:27,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:27,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247206049] [2020-04-18 19:24:27,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:27,754 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 19:24:27,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247206049] [2020-04-18 19:24:27,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:27,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:27,755 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:27,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:27,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 500 transitions. [2020-04-18 19:24:27,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:27,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:24:27,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:27,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:24:27,833 INFO L87 Difference]: Start difference. First operand 1435 states. Second operand 7 states. [2020-04-18 19:24:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:28,028 INFO L93 Difference]: Finished difference Result 1867 states and 5784 transitions. [2020-04-18 19:24:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 5784 transitions. [2020-04-18 19:24:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:28,033 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:24:28,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:28,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1654096816, now seen corresponding path program 3 times [2020-04-18 19:24:28,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:28,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639754673] [2020-04-18 19:24:28,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:28,120 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 19:24:28,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639754673] [2020-04-18 19:24:28,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:28,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:24:28,121 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:28,125 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:28,170 INFO L259 McrAutomatonBuilder]: Finished intersection with 264 states and 615 transitions. [2020-04-18 19:24:28,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:28,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:24:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:24:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:24:28,195 INFO L87 Difference]: Start difference. First operand 1867 states and 5784 transitions. Second operand 6 states. [2020-04-18 19:24:28,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:28,291 INFO L93 Difference]: Finished difference Result 2711 states and 8068 transitions. [2020-04-18 19:24:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 8068 transitions. [2020-04-18 19:24:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:28,298 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:24:28,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:28,298 INFO L82 PathProgramCache]: Analyzing trace with hash 37096590, now seen corresponding path program 4 times [2020-04-18 19:24:28,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:28,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810775955] [2020-04-18 19:24:28,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:28,409 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 19:24:28,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810775955] [2020-04-18 19:24:28,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:28,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:24:28,410 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:28,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:28,481 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 609 transitions. [2020-04-18 19:24:28,481 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:28,571 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:24:28,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:24:28,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:24:28,572 INFO L87 Difference]: Start difference. First operand 2711 states and 8068 transitions. Second operand 7 states. [2020-04-18 19:24:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:28,849 INFO L93 Difference]: Finished difference Result 3093 states and 8730 transitions. [2020-04-18 19:24:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 8730 transitions. [2020-04-18 19:24:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:28,855 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:24:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:28,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1775541504, now seen corresponding path program 5 times [2020-04-18 19:24:28,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:28,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475694442] [2020-04-18 19:24:28,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:28,943 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 19:24:28,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475694442] [2020-04-18 19:24:28,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:28,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:28,944 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:28,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:28,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 245 transitions. [2020-04-18 19:24:28,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:29,022 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:24:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:24:29,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:24:29,023 INFO L87 Difference]: Start difference. First operand 3093 states and 8730 transitions. Second operand 8 states. [2020-04-18 19:24:29,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:29,346 INFO L93 Difference]: Finished difference Result 3173 states and 8802 transitions. [2020-04-18 19:24:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 8802 transitions. [2020-04-18 19:24:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:24:29,350 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:24:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:24:29,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1193599966, now seen corresponding path program 6 times [2020-04-18 19:24:29,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:24:29,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812529469] [2020-04-18 19:24:29,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:24:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:24:29,448 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 19:24:29,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812529469] [2020-04-18 19:24:29,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:24:29,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:24:29,449 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:24:29,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:24:29,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 440 transitions. [2020-04-18 19:24:29,483 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:24:29,743 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:24:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:24:29,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1781, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:24:29,745 INFO L87 Difference]: Start difference. First operand 3173 states and 8802 transitions. Second operand 10 states. [2020-04-18 19:24:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:30,188 INFO L93 Difference]: Finished difference Result 5240 states and 14069 transitions. [2020-04-18 19:24:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5240 states and 14069 transitions. [2020-04-18 19:24:30,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:30,197 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1244451097] [2020-04-18 19:24:30,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:24:30,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:24:30,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1244451097] [2020-04-18 19:24:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:24:30,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:24:30,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:24:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=2661, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 19:24:30,205 INFO L87 Difference]: Start difference. First operand 740 states and 2046 transitions. Second operand 20 states. [2020-04-18 19:24:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:24:30,783 INFO L93 Difference]: Finished difference Result 686 states and 1884 transitions. [2020-04-18 19:24:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:24:30,784 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-04-18 19:24:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:24:30,784 INFO L225 Difference]: With dead ends: 686 [2020-04-18 19:24:30,784 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:24:30,786 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1672 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=702, Invalid=4410, Unknown=0, NotChecked=0, Total=5112 [2020-04-18 19:24:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:24:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:24:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:24:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:24:30,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:24:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:24:30,787 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:24:30,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:24:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:24:30,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:24:30,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:24:30 BasicIcfg [2020-04-18 19:24:30,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:24:30,794 INFO L168 Benchmark]: Toolchain (without parser) took 14754.48 ms. Allocated memory was 143.7 MB in the beginning and 548.9 MB in the end (delta: 405.3 MB). Free memory was 100.2 MB in the beginning and 454.1 MB in the end (delta: -353.9 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,794 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.38 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.2 MB in the beginning and 155.9 MB in the end (delta: -57.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.69 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,796 INFO L168 Benchmark]: Boogie Preprocessor took 24.97 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,797 INFO L168 Benchmark]: RCFGBuilder took 504.64 ms. Allocated memory is still 201.3 MB. Free memory was 152.3 MB in the beginning and 130.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,797 INFO L168 Benchmark]: TraceAbstraction took 13374.78 ms. Allocated memory was 201.3 MB in the beginning and 548.9 MB in the end (delta: 347.6 MB). Free memory was 130.0 MB in the beginning and 454.1 MB in the end (delta: -324.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:24:30,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.38 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.2 MB in the beginning and 155.9 MB in the end (delta: -57.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.69 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.97 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.64 ms. Allocated memory is still 201.3 MB. Free memory was 152.3 MB in the beginning and 130.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13374.78 ms. Allocated memory was 201.3 MB in the beginning and 548.9 MB in the end (delta: 347.6 MB). Free memory was 130.0 MB in the beginning and 454.1 MB in the end (delta: -324.1 MB). Peak memory consumption was 23.5 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: 13.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 721 SDtfs, 2443 SDslu, 4435 SDs, 0 SdLazy, 894 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1136 GetRequests, 861 SyntacticMatches, 7 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3931 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7295occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 3956 StatesRemovedByMinimization, 7 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...