/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-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:15:08,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:15:08,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:15:08,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:15:08,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:15:08,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:15:08,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:15:08,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:15:08,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:15:08,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:15:08,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:15:08,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:15:08,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:15:08,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:15:08,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:15:08,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:15:08,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:15:08,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:15:08,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:15:08,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:15:08,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:15:08,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:15:08,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:15:08,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:15:08,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:15:08,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:15:08,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:15:08,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:15:08,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:15:08,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:15:08,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:15:08,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:15:08,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:15:08,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:15:08,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:15:08,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:15:08,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:15:08,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:15:08,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:15:08,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:15:08,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:15:08,765 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-SemanticLbe-McrStrategy.epf [2020-04-18 11:15:08,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:15:08,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:15:08,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:15:08,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:15:08,783 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:15:08,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:15:08,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:15:08,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:15:08,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:15:08,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:15:08,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:15:08,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:15:08,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:15:08,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:15:08,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:15:08,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:15:08,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:15:08,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:15:08,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:15:08,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:15:08,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:15:08,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:15:08,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:15:08,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:15:08,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:15:08,787 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:15:08,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:15:08,787 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:15:08,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:15:08,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:15:09,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:15:09,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:15:09,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:15:09,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:15:09,110 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:15:09,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-04-18 11:15:09,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5419e963f/d34b0e4de21d4d64bd1623e81eaf39e3/FLAG8014c5a1f [2020-04-18 11:15:09,701 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:15:09,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-04-18 11:15:09,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5419e963f/d34b0e4de21d4d64bd1623e81eaf39e3/FLAG8014c5a1f [2020-04-18 11:15:10,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5419e963f/d34b0e4de21d4d64bd1623e81eaf39e3 [2020-04-18 11:15:10,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:15:10,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:15:10,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:15:10,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:15:10,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:15:10,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10, skipping insertion in model container [2020-04-18 11:15:10,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:15:10,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:15:10,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:15:10,639 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:15:10,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:15:10,791 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:15:10,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10 WrapperNode [2020-04-18 11:15:10,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:15:10,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:15:10,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:15:10,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:15:10,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:15:10,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:15:10,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:15:10,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:15:10,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (1/1) ... [2020-04-18 11:15:10,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:15:10,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:15:10,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:15:10,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:15:10,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (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 11:15:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:15:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:15:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:15:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:15:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:15:10,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:15:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:15:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:15:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:15:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:15:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:15:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:15:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:15:10,932 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 11:15:11,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:15:11,300 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:15:11,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:15:11 BoogieIcfgContainer [2020-04-18 11:15:11,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:15:11,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:15:11,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:15:11,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:15:11,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:15:10" (1/3) ... [2020-04-18 11:15:11,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22f531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:15:11, skipping insertion in model container [2020-04-18 11:15:11,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:10" (2/3) ... [2020-04-18 11:15:11,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22f531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:15:11, skipping insertion in model container [2020-04-18 11:15:11,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:15:11" (3/3) ... [2020-04-18 11:15:11,312 INFO L109 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2020-04-18 11:15:11,322 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:15:11,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:15:11,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:15:11,331 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:15:11,355 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,355 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,355 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,356 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,356 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,357 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,357 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,357 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,358 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,358 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,358 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,358 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,359 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,359 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,359 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,360 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,360 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,360 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,365 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,365 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,365 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,366 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,373 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,373 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,374 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,374 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,376 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,377 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,377 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,377 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:11,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:15:11,413 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:15:11,413 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:15:11,413 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:15:11,413 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:15:11,413 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:15:11,414 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:15:11,414 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:15:11,414 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:15:11,429 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 11:15:11,431 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:15:11,474 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:15:11,474 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:15:11,479 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:15:11,482 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:15:11,503 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:15:11,503 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:15:11,504 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:15:11,506 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 11:15:11,507 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:15:13,305 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 11:15:13,357 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2037 [2020-04-18 11:15:13,358 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 11:15:13,361 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 11:15:13,381 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 11:15:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 11:15:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:15:13,390 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:13,391 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:13,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:13,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:13,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 1 times [2020-04-18 11:15:13,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:13,405 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1018279241] [2020-04-18 11:15:13,421 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:13,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:15:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:15:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:15:13,437 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:13,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 2 times [2020-04-18 11:15:13,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:13,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107862830] [2020-04-18 11:15:13,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:13,635 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 11:15:13,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107862830] [2020-04-18 11:15:13,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:13,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:15:13,639 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:13,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:13,646 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:15:13,646 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:13,659 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:15:13,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:15:13,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:15:13,665 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:15:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:13,669 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:15:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:15:13,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:13,670 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1018279241] [2020-04-18 11:15:13,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:13,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:15:13,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1018279241] [2020-04-18 11:15:13,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:15:13,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:15:13,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:15:13,676 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 11:15:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:13,701 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 11:15:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:15:13,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:15:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:13,716 INFO L225 Difference]: With dead ends: 214 [2020-04-18 11:15:13,716 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 11:15:13,718 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:15:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 11:15:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 11:15:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 11:15:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 11:15:13,777 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 11:15:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:13,778 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 11:15:13,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:15:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 11:15:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:15:13,780 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:13,780 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:13,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 1 times [2020-04-18 11:15:13,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:13,782 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [689640987] [2020-04-18 11:15:13,782 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:13,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 11:15:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:15:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:15:13,784 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:13,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 2 times [2020-04-18 11:15:13,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:13,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746352455] [2020-04-18 11:15:13,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:13,901 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 11:15:13,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746352455] [2020-04-18 11:15:13,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:13,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:13,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:13,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:13,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 11:15:13,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:13,915 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:15:13,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:13,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:13,916 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 11:15:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:13,934 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 11:15:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 11:15:13,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:13,935 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [689640987] [2020-04-18 11:15:13,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:13,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:15:13,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [689640987] [2020-04-18 11:15:13,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:15:13,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:13,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:13,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:13,938 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 11:15:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:13,960 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-04-18 11:15:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:15:13,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:15:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:13,963 INFO L225 Difference]: With dead ends: 202 [2020-04-18 11:15:13,963 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 11:15:13,965 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 11:15:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 11:15:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 11:15:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-04-18 11:15:13,980 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-04-18 11:15:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:13,980 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-04-18 11:15:13,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:15:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-04-18 11:15:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:15:13,981 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:13,981 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:13,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:13,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:13,982 INFO L82 PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 1 times [2020-04-18 11:15:13,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:13,983 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [907569847] [2020-04-18 11:15:13,983 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:13,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 11:15:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 11:15:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:15:13,985 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 2 times [2020-04-18 11:15:13,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:13,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723386555] [2020-04-18 11:15:13,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,055 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 11:15:14,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723386555] [2020-04-18 11:15:14,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:14,057 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,058 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 11:15:14,059 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:14,070 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:15:14,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:14,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:14,071 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 11:15:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,080 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2020-04-18 11:15:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions. [2020-04-18 11:15:14,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:14,081 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [907569847] [2020-04-18 11:15:14,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:14,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:15:14,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [907569847] [2020-04-18 11:15:14,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:15:14,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:14,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:14,082 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 4 states. [2020-04-18 11:15:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,115 INFO L93 Difference]: Finished difference Result 148 states and 336 transitions. [2020-04-18 11:15:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:15:14,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 11:15:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:14,117 INFO L225 Difference]: With dead ends: 148 [2020-04-18 11:15:14,118 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 11:15:14,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 11:15:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 11:15:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 11:15:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 253 transitions. [2020-04-18 11:15:14,144 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 253 transitions. Word has length 10 [2020-04-18 11:15:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:14,144 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 253 transitions. [2020-04-18 11:15:14,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:15:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions. [2020-04-18 11:15:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:15:14,145 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:14,146 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:14,146 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 1 times [2020-04-18 11:15:14,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:14,147 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1899639272] [2020-04-18 11:15:14,148 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:15:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:15:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:15:14,149 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:14,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,150 INFO L82 PathProgramCache]: Analyzing trace with hash 806634175, now seen corresponding path program 2 times [2020-04-18 11:15:14,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:14,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144794389] [2020-04-18 11:15:14,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,209 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 11:15:14,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144794389] [2020-04-18 11:15:14,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:14,210 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,212 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:15:14,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:14,226 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:14,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:14,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:14,226 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 11:15:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,245 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 11:15:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 11:15:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:15:14,246 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,247 INFO L82 PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 3 times [2020-04-18 11:15:14,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:14,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938284255] [2020-04-18 11:15:14,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,306 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 11:15:14,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938284255] [2020-04-18 11:15:14,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:14,307 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,310 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:15:14,310 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:14,348 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:14,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:14,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:15:14,349 INFO L87 Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 6 states. [2020-04-18 11:15:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,368 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 11:15:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 11:15:14,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:14,369 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1899639272] [2020-04-18 11:15:14,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:14,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:15:14,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1899639272] [2020-04-18 11:15:14,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:15:14,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:14,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:14,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:15:14,371 INFO L87 Difference]: Start difference. First operand 112 states and 253 transitions. Second operand 6 states. [2020-04-18 11:15:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,421 INFO L93 Difference]: Finished difference Result 109 states and 227 transitions. [2020-04-18 11:15:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:15:14,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 11:15:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:14,422 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:15:14,423 INFO L226 Difference]: Without dead ends: 85 [2020-04-18 11:15:14,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:15:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-04-18 11:15:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-04-18 11:15:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-04-18 11:15:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 173 transitions. [2020-04-18 11:15:14,430 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 173 transitions. Word has length 11 [2020-04-18 11:15:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:14,430 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 173 transitions. [2020-04-18 11:15:14,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:15:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 173 transitions. [2020-04-18 11:15:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:14,432 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:14,432 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:14,432 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 1 times [2020-04-18 11:15:14,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:14,433 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [752441007] [2020-04-18 11:15:14,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 11:15:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 11:15:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:14,436 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2081333969, now seen corresponding path program 2 times [2020-04-18 11:15:14,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:14,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244513775] [2020-04-18 11:15:14,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,495 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 11:15:14,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244513775] [2020-04-18 11:15:14,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:14,496 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,497 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 11:15:14,500 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:14,511 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:14,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:14,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:14,513 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 11:15:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,539 INFO L93 Difference]: Finished difference Result 58 states and 105 transitions. [2020-04-18 11:15:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2020-04-18 11:15:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:14,541 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1693455149, now seen corresponding path program 3 times [2020-04-18 11:15:14,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:14,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196331010] [2020-04-18 11:15:14,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,637 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 11:15:14,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196331010] [2020-04-18 11:15:14,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:14,638 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:15:14,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:14,679 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:14,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:14,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:15:14,680 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand 6 states. [2020-04-18 11:15:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,735 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 11:15:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-04-18 11:15:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:14,736 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:15:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 4 times [2020-04-18 11:15:14,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:14,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290007653] [2020-04-18 11:15:14,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,790 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 11:15:14,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290007653] [2020-04-18 11:15:14,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:14,792 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,795 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:15:14,795 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:14,814 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:14,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:14,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:15:14,815 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 7 states. [2020-04-18 11:15:14,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,861 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 11:15:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-04-18 11:15:14,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:14,862 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [752441007] [2020-04-18 11:15:14,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:14,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:15:14,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [752441007] [2020-04-18 11:15:14,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:15:14,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:14,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:14,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:15:14,864 INFO L87 Difference]: Start difference. First operand 85 states and 173 transitions. Second operand 7 states. [2020-04-18 11:15:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:14,911 INFO L93 Difference]: Finished difference Result 80 states and 161 transitions. [2020-04-18 11:15:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:15:14,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:15:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:14,913 INFO L225 Difference]: With dead ends: 80 [2020-04-18 11:15:14,913 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 11:15:14,913 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:15:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 11:15:14,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 11:15:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 11:15:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 147 transitions. [2020-04-18 11:15:14,918 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 147 transitions. Word has length 13 [2020-04-18 11:15:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:14,919 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 147 transitions. [2020-04-18 11:15:14,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:15:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 147 transitions. [2020-04-18 11:15:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:14,920 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:14,920 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:14,920 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 399497030, now seen corresponding path program 1 times [2020-04-18 11:15:14,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:14,921 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [981764608] [2020-04-18 11:15:14,921 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:14,926 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 11:15:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 11:15:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:14,929 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:14,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1909222784, now seen corresponding path program 2 times [2020-04-18 11:15:14,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:14,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435550602] [2020-04-18 11:15:14,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:14,992 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 11:15:14,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435550602] [2020-04-18 11:15:14,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:14,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:14,993 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:14,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:15,000 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 11:15:15,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:15,012 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:15,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:15,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:15,013 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-04-18 11:15:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:15,051 INFO L93 Difference]: Finished difference Result 238 states and 612 transitions. [2020-04-18 11:15:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions. [2020-04-18 11:15:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:15,055 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1953593056, now seen corresponding path program 3 times [2020-04-18 11:15:15,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:15,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469598771] [2020-04-18 11:15:15,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:15,144 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 11:15:15,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469598771] [2020-04-18 11:15:15,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:15,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:15,146 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:15,161 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:15,165 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-04-18 11:15:15,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:15,208 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:15:15,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:15,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:15:15,209 INFO L87 Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 6 states. [2020-04-18 11:15:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:15,292 INFO L93 Difference]: Finished difference Result 256 states and 637 transitions. [2020-04-18 11:15:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 637 transitions. [2020-04-18 11:15:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:15,294 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:15:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:15,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1206368608, now seen corresponding path program 4 times [2020-04-18 11:15:15,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:15,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290511135] [2020-04-18 11:15:15,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:15,322 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 11:15:15,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290511135] [2020-04-18 11:15:15,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:15,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:15,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:15,325 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:15,328 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 11:15:15,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:15,365 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:15:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:15:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:15:15,366 INFO L87 Difference]: Start difference. First operand 256 states and 637 transitions. Second operand 5 states. [2020-04-18 11:15:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:15,393 INFO L93 Difference]: Finished difference Result 378 states and 878 transitions. [2020-04-18 11:15:15,393 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 878 transitions. [2020-04-18 11:15:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:15,394 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:15:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1263359428, now seen corresponding path program 5 times [2020-04-18 11:15:15,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:15,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920188135] [2020-04-18 11:15:15,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:15,437 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 11:15:15,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920188135] [2020-04-18 11:15:15,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:15,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:15:15,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:15,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:15,442 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 11:15:15,443 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:15,467 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:15:15,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:15:15,468 INFO L87 Difference]: Start difference. First operand 378 states and 878 transitions. Second operand 7 states. [2020-04-18 11:15:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:15,573 INFO L93 Difference]: Finished difference Result 382 states and 880 transitions. [2020-04-18 11:15:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 880 transitions. [2020-04-18 11:15:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:15,574 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:15:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash 936627168, now seen corresponding path program 6 times [2020-04-18 11:15:15,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:15,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385755929] [2020-04-18 11:15:15,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:15,603 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 11:15:15,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385755929] [2020-04-18 11:15:15,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:15,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:15,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:15,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:15,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 18 transitions. [2020-04-18 11:15:15,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:15,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:15:15,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:15,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:15:15,631 INFO L87 Difference]: Start difference. First operand 382 states and 880 transitions. Second operand 4 states. [2020-04-18 11:15:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:15,649 INFO L93 Difference]: Finished difference Result 596 states and 1327 transitions. [2020-04-18 11:15:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1327 transitions. [2020-04-18 11:15:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:15,651 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:15:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 967250296, now seen corresponding path program 7 times [2020-04-18 11:15:15,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:15,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137667942] [2020-04-18 11:15:15,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:15,680 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 11:15:15,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137667942] [2020-04-18 11:15:15,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:15,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:15,681 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:15,683 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:15,686 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 64 transitions. [2020-04-18 11:15:15,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:15,797 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:15:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:15,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:15:15,798 INFO L87 Difference]: Start difference. First operand 596 states and 1327 transitions. Second operand 6 states. [2020-04-18 11:15:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:15,831 INFO L93 Difference]: Finished difference Result 948 states and 1949 transitions. [2020-04-18 11:15:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1949 transitions. [2020-04-18 11:15:15,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:15,834 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [981764608] [2020-04-18 11:15:15,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:15,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:15:15,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [981764608] [2020-04-18 11:15:15,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 11:15:15,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:15,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:15:15,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:15:15,836 INFO L87 Difference]: Start difference. First operand 72 states and 147 transitions. Second operand 16 states. [2020-04-18 11:15:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:16,535 INFO L93 Difference]: Finished difference Result 109 states and 212 transitions. [2020-04-18 11:15:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 11:15:16,535 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-04-18 11:15:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:16,536 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:15:16,536 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:15:16,537 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=526, Invalid=2024, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 11:15:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:15:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:15:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:15:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:15:16,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 11:15:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:16,538 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:15:16,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 11:15:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:15:16,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:16,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:15:16 BasicIcfg [2020-04-18 11:15:16,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:15:16,543 INFO L168 Benchmark]: Toolchain (without parser) took 6491.91 ms. Allocated memory was 145.2 MB in the beginning and 283.6 MB in the end (delta: 138.4 MB). Free memory was 100.1 MB in the beginning and 206.3 MB in the end (delta: -106.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,544 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.52 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 98.1 MB in the beginning and 157.8 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.91 ms. Allocated memory is still 202.4 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,546 INFO L168 Benchmark]: Boogie Preprocessor took 26.15 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,547 INFO L168 Benchmark]: RCFGBuilder took 437.75 ms. Allocated memory is still 202.4 MB. Free memory was 154.4 MB in the beginning and 132.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,548 INFO L168 Benchmark]: TraceAbstraction took 5236.23 ms. Allocated memory was 202.4 MB in the beginning and 283.6 MB in the end (delta: 81.3 MB). Free memory was 131.7 MB in the beginning and 206.3 MB in the end (delta: -74.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:16,552 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.52 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 98.1 MB in the beginning and 157.8 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.91 ms. Allocated memory is still 202.4 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.15 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.75 ms. Allocated memory is still 202.4 MB. Free memory was 154.4 MB in the beginning and 132.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5236.23 ms. Allocated memory was 202.4 MB in the beginning and 283.6 MB in the end (delta: 81.3 MB). Free memory was 131.7 MB in the beginning and 206.3 MB in the end (delta: -74.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 644 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2037 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 103 SDtfs, 266 SDslu, 255 SDs, 0 SdLazy, 294 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...