/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/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:56:01,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:56:01,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:56:01,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:56:01,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:56:01,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:56:01,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:56:01,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:56:01,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:56:01,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:56:01,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:56:01,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:56:01,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:56:01,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:56:01,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:56:01,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:56:01,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:56:01,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:56:01,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:56:01,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:56:01,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:56:01,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:56:01,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:56:01,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:56:01,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:56:01,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:56:01,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:56:01,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:56:01,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:56:01,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:56:01,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:56:01,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:56:01,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:56:01,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:56:01,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:56:01,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:56:01,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:56:01,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:56:01,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:56:01,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:56:01,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:56:01,812 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 10:56:01,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:56:01,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:56:01,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:56:01,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:56:01,828 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:56:01,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:56:01,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:56:01,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:56:01,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:56:01,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:56:01,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:56:01,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:56:01,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:56:01,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:56:01,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:56:01,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:56:01,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:56:01,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:56:01,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:56:01,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:56:01,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:56:01,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:56:01,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:56:01,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:56:01,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:56:01,833 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:56:01,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:56:01,833 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:56:01,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:56:01,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:56:02,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:56:02,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:56:02,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:56:02,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:56:02,134 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:56:02,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-18 10:56:02,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed80991c/2a721b6f3f8e42f081b579063b76453d/FLAGc84d95cf1 [2020-04-18 10:56:02,768 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:56:02,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-04-18 10:56:02,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed80991c/2a721b6f3f8e42f081b579063b76453d/FLAGc84d95cf1 [2020-04-18 10:56:03,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed80991c/2a721b6f3f8e42f081b579063b76453d [2020-04-18 10:56:03,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:56:03,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:56:03,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:56:03,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:56:03,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:56:03,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52695b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03, skipping insertion in model container [2020-04-18 10:56:03,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:56:03,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:56:03,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:56:03,576 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:56:03,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:56:03,712 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:56:03,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03 WrapperNode [2020-04-18 10:56:03,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:56:03,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:56:03,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:56:03,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:56:03,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:56:03,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:56:03,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:56:03,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:56:03,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (1/1) ... [2020-04-18 10:56:03,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:56:03,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:56:03,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:56:03,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:56:03,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (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 10:56:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:56:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:56:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:56:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:56:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:56:03,870 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:56:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:56:03,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:56:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:56:03,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:56:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:56:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:56:03,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:56:03,873 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 10:56:04,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:56:04,266 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:56:04,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:56:04 BoogieIcfgContainer [2020-04-18 10:56:04,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:56:04,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:56:04,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:56:04,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:56:04,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:56:03" (1/3) ... [2020-04-18 10:56:04,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ac9102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:56:04, skipping insertion in model container [2020-04-18 10:56:04,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:56:03" (2/3) ... [2020-04-18 10:56:04,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ac9102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:56:04, skipping insertion in model container [2020-04-18 10:56:04,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:56:04" (3/3) ... [2020-04-18 10:56:04,279 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-04-18 10:56:04,289 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:56:04,290 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:56:04,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:56:04,298 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:56:04,323 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,323 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,324 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,324 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,325 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,325 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,326 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,326 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,326 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,326 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,327 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,327 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,327 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,328 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,328 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,328 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,329 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,329 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,333 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,333 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,334 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,334 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,340 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,340 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,341 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,341 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,343 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,344 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:56:04,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:56:04,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:56:04,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:56:04,387 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:56:04,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:56:04,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:56:04,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:56:04,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:56:04,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:56:04,405 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 10:56:04,407 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:56:04,455 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:56:04,455 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:56:04,461 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 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:56:04,464 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:56:04,485 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:56:04,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:56:04,486 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 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:56:04,488 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:56:04,489 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:56:06,396 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 10:56:06,396 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 10:56:06,401 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:56:06,434 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:56:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:56:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:56:06,454 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:06,456 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:06,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:06,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 10:56:06,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:06,477 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1353769473] [2020-04-18 10:56:06,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:06,530 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:56:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:56:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:56:06,535 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:06,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 2 times [2020-04-18 10:56:06,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:06,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044149996] [2020-04-18 10:56:06,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:06,840 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 10:56:06,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044149996] [2020-04-18 10:56:06,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:06,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:56:06,844 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:06,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:06,848 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:56:06,848 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:06,856 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:06,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:06,863 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:56:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:06,867 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:56:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:56:06,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:06,868 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1353769473] [2020-04-18 10:56:06,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:06,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:56:06,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1353769473] [2020-04-18 10:56:06,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:56:06,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:06,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:06,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:06,877 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:56:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:06,922 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 10:56:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:56:06,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:56:06,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:06,940 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:56:06,941 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:56:06,944 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 10:56:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:56:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:56:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:56:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 10:56:07,009 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 10:56:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:07,010 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 10:56:07,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:56:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 10:56:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:56:07,012 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:07,012 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:07,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 10:56:07,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:07,013 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1156792759] [2020-04-18 10:56:07,014 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,014 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:56:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:56:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:56:07,015 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379138, now seen corresponding path program 2 times [2020-04-18 10:56:07,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022392617] [2020-04-18 10:56:07,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,108 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 10:56:07,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022392617] [2020-04-18 10:56:07,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:56:07,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,114 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:07,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:07,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:07,115 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 10:56:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,118 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 10:56:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 10:56:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:56:07,119 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 3 times [2020-04-18 10:56:07,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425231416] [2020-04-18 10:56:07,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,198 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 10:56:07,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425231416] [2020-04-18 10:56:07,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,200 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,201 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:56:07,201 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,216 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:56:07,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:56:07,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:56:07,217 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 10:56:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,230 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 10:56:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 10:56:07,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:07,231 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1156792759] [2020-04-18 10:56:07,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:07,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:56:07,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1156792759] [2020-04-18 10:56:07,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:56:07,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:07,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:56:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:56:07,233 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 5 states. [2020-04-18 10:56:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,261 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 10:56:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:56:07,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 10:56:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:07,267 INFO L225 Difference]: With dead ends: 278 [2020-04-18 10:56:07,267 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 10:56:07,268 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:56:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 10:56:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 10:56:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 10:56:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 10:56:07,285 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 10:56:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:07,285 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 10:56:07,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:56:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 10:56:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:56:07,287 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:07,287 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:07,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:07,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,287 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 10:56:07,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:07,288 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [547955305] [2020-04-18 10:56:07,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,289 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 10:56:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 10:56:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:56:07,290 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash 415020294, now seen corresponding path program 2 times [2020-04-18 10:56:07,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554972319] [2020-04-18 10:56:07,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,342 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 10:56:07,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554972319] [2020-04-18 10:56:07,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,344 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,347 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,348 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 10:56:07,349 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,352 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:07,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:07,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:07,353 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 10:56:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,359 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 10:56:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 10:56:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:56:07,363 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,364 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 3 times [2020-04-18 10:56:07,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508320912] [2020-04-18 10:56:07,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,454 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 10:56:07,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508320912] [2020-04-18 10:56:07,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:07,455 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,456 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 10:56:07,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,474 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:56:07,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:56:07,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:56:07,475 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 10:56:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,492 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-04-18 10:56:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-04-18 10:56:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:56:07,493 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:56:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash 808893834, now seen corresponding path program 4 times [2020-04-18 10:56:07,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221399635] [2020-04-18 10:56:07,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,549 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 10:56:07,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221399635] [2020-04-18 10:56:07,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:07,551 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,552 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,554 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 10:56:07,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:56:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:56:07,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:56:07,586 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-04-18 10:56:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,604 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-04-18 10:56:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-04-18 10:56:07,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:07,606 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [547955305] [2020-04-18 10:56:07,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:07,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:56:07,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [547955305] [2020-04-18 10:56:07,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:56:07,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:07,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:56:07,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:56:07,608 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 7 states. [2020-04-18 10:56:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,674 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 10:56:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:56:07,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 10:56:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:07,678 INFO L225 Difference]: With dead ends: 218 [2020-04-18 10:56:07,678 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:56:07,679 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:56:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:56:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:56:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:56:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 10:56:07,704 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 10:56:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:07,705 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 10:56:07,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:56:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 10:56:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:56:07,706 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:07,706 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:07,707 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:07,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 10:56:07,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:07,708 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [605821904] [2020-04-18 10:56:07,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,709 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:56:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:56:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:56:07,711 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1558338202, now seen corresponding path program 2 times [2020-04-18 10:56:07,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257103580] [2020-04-18 10:56:07,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,762 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 10:56:07,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257103580] [2020-04-18 10:56:07,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,763 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,764 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,767 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 10:56:07,767 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:07,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:07,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:07,772 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 10:56:07,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,775 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:56:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:56:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:56:07,776 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 3 times [2020-04-18 10:56:07,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468391368] [2020-04-18 10:56:07,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,805 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 10:56:07,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468391368] [2020-04-18 10:56:07,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:56:07,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:56:07,810 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,815 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:07,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:07,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:56:07,816 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 10:56:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,816 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:56:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:56:07,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:07,817 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [605821904] [2020-04-18 10:56:07,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:07,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:56:07,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [605821904] [2020-04-18 10:56:07,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:56:07,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:07,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:56:07,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:56:07,819 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 10:56:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,836 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 10:56:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:56:07,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 10:56:07,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:07,838 INFO L225 Difference]: With dead ends: 144 [2020-04-18 10:56:07,838 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 10:56:07,839 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 10:56:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 10:56:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 10:56:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 10:56:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 10:56:07,848 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 10:56:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:07,848 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 10:56:07,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:56:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 10:56:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:56:07,849 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:07,850 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:07,850 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:07,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 10:56:07,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:07,851 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [960900074] [2020-04-18 10:56:07,851 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,853 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 10:56:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 10:56:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:56:07,854 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1063843815, now seen corresponding path program 2 times [2020-04-18 10:56:07,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378235463] [2020-04-18 10:56:07,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,880 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 10:56:07,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378235463] [2020-04-18 10:56:07,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,881 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,882 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,885 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 10:56:07,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:07,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:07,889 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 10:56:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,893 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 10:56:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 10:56:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:56:07,893 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1063869855, now seen corresponding path program 3 times [2020-04-18 10:56:07,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699981954] [2020-04-18 10:56:07,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,920 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 10:56:07,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699981954] [2020-04-18 10:56:07,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,921 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:07,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 10:56:07,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:07,929 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:07,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:07,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:56:07,930 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 3 states. [2020-04-18 10:56:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:07,934 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 10:56:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 10:56:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:56:07,935 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:56:07,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:07,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1063870665, now seen corresponding path program 4 times [2020-04-18 10:56:07,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:07,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342609841] [2020-04-18 10:56:07,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:07,995 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 10:56:07,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342609841] [2020-04-18 10:56:07,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:07,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:07,996 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:07,998 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,002 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 10:56:08,003 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,019 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:56:08,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:56:08,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:56:08,020 INFO L87 Difference]: Start difference. First operand 69 states and 134 transitions. Second operand 4 states. [2020-04-18 10:56:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,033 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2020-04-18 10:56:08,034 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 134 transitions. [2020-04-18 10:56:08,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:08,034 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [960900074] [2020-04-18 10:56:08,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:08,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:56:08,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [960900074] [2020-04-18 10:56:08,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:56:08,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:56:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:56:08,036 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 6 states. [2020-04-18 10:56:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,208 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 10:56:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:56:08,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 10:56:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:08,210 INFO L225 Difference]: With dead ends: 164 [2020-04-18 10:56:08,210 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 10:56:08,210 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:56:08,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 10:56:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 10:56:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 10:56:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 10:56:08,217 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 10:56:08,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:08,217 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 10:56:08,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:56:08,217 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 10:56:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:56:08,218 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:08,218 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:08,218 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 10:56:08,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:08,219 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2098449979] [2020-04-18 10:56:08,220 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,222 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 10:56:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 10:56:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:56:08,224 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1309642661, now seen corresponding path program 2 times [2020-04-18 10:56:08,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142758077] [2020-04-18 10:56:08,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,252 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 10:56:08,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142758077] [2020-04-18 10:56:08,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:08,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 10:56:08,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,263 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:08,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:08,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:08,264 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 10:56:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,269 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 10:56:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 10:56:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:56:08,270 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:08,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1309616621, now seen corresponding path program 3 times [2020-04-18 10:56:08,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027696522] [2020-04-18 10:56:08,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,297 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 10:56:08,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027696522] [2020-04-18 10:56:08,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:08,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,299 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 10:56:08,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:08,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:56:08,310 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 3 states. [2020-04-18 10:56:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,314 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 10:56:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 10:56:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:56:08,315 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:56:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1309615811, now seen corresponding path program 4 times [2020-04-18 10:56:08,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060906800] [2020-04-18 10:56:08,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,404 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 10:56:08,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060906800] [2020-04-18 10:56:08,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:08,405 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 10:56:08,417 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:08,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:56:08,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:56:08,481 INFO L87 Difference]: Start difference. First operand 90 states and 183 transitions. Second operand 5 states. [2020-04-18 10:56:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,514 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2020-04-18 10:56:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2020-04-18 10:56:08,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:08,515 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2098449979] [2020-04-18 10:56:08,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:08,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:56:08,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2098449979] [2020-04-18 10:56:08,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:56:08,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:08,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:56:08,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:56:08,517 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 10:56:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,684 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 10:56:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:56:08,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 10:56:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:08,686 INFO L225 Difference]: With dead ends: 122 [2020-04-18 10:56:08,686 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 10:56:08,686 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:56:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 10:56:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 10:56:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 10:56:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 10:56:08,692 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 10:56:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:08,692 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 10:56:08,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:56:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 10:56:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:56:08,693 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:08,693 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:08,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:08,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 10:56:08,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:08,694 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1592646432] [2020-04-18 10:56:08,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,696 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 10:56:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 10:56:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:56:08,697 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1944216008, now seen corresponding path program 2 times [2020-04-18 10:56:08,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072803068] [2020-04-18 10:56:08,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:56:08,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072803068] [2020-04-18 10:56:08,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:08,732 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,734 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,735 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-04-18 10:56:08,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,739 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:08,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:08,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:08,740 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 10:56:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,743 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 10:56:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 10:56:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:56:08,744 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1943408768, now seen corresponding path program 3 times [2020-04-18 10:56:08,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743717141] [2020-04-18 10:56:08,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,774 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 10:56:08,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743717141] [2020-04-18 10:56:08,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:08,775 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,776 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,781 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 10:56:08,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,788 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:08,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:56:08,789 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 10:56:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,792 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 10:56:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 10:56:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:56:08,794 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:56:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1943352968, now seen corresponding path program 4 times [2020-04-18 10:56:08,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269916168] [2020-04-18 10:56:08,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,831 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 10:56:08,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269916168] [2020-04-18 10:56:08,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:08,832 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,833 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 10:56:08,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,850 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:56:08,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:08,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:56:08,851 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 10:56:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,858 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 10:56:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 10:56:08,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:08,859 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1592646432] [2020-04-18 10:56:08,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:08,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:56:08,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1592646432] [2020-04-18 10:56:08,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:56:08,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:08,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:56:08,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:56:08,861 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 10:56:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,892 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 10:56:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:56:08,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 10:56:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:08,893 INFO L225 Difference]: With dead ends: 115 [2020-04-18 10:56:08,893 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 10:56:08,894 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:56:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 10:56:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 10:56:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 10:56:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 10:56:08,898 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 10:56:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:08,899 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 10:56:08,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:56:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 10:56:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:08,900 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:56:08,900 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:56:08,900 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:56:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 10:56:08,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:56:08,903 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [384660109] [2020-04-18 10:56:08,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 10:56:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 10:56:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:08,910 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:56:08,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,910 INFO L82 PathProgramCache]: Analyzing trace with hash 141184219, now seen corresponding path program 2 times [2020-04-18 10:56:08,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571163512] [2020-04-18 10:56:08,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:08,941 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 10:56:08,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571163512] [2020-04-18 10:56:08,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:08,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:08,943 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:08,945 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:08,949 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 33 transitions. [2020-04-18 10:56:08,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:08,955 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:08,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:08,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:56:08,956 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 10:56:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:08,960 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 10:56:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 10:56:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:08,961 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:56:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash 116159779, now seen corresponding path program 3 times [2020-04-18 10:56:08,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:08,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129512326] [2020-04-18 10:56:08,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:09,017 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 10:56:09,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129512326] [2020-04-18 10:56:09,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:09,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:56:09,018 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:09,019 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:09,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 10:56:09,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:09,032 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:09,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:56:09,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:56:09,032 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-18 10:56:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:09,036 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2020-04-18 10:56:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 439 transitions. [2020-04-18 10:56:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:09,037 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:56:09,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:09,037 INFO L82 PathProgramCache]: Analyzing trace with hash 115313869, now seen corresponding path program 4 times [2020-04-18 10:56:09,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:09,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494683109] [2020-04-18 10:56:09,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:56:09,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494683109] [2020-04-18 10:56:09,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:09,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:09,078 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:09,080 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:09,086 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 10:56:09,086 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:09,149 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:56:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:56:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:56:09,150 INFO L87 Difference]: Start difference. First operand 190 states and 439 transitions. Second operand 5 states. [2020-04-18 10:56:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:09,194 INFO L93 Difference]: Finished difference Result 295 states and 630 transitions. [2020-04-18 10:56:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 630 transitions. [2020-04-18 10:56:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:09,195 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:56:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:09,196 INFO L82 PathProgramCache]: Analyzing trace with hash 115381369, now seen corresponding path program 5 times [2020-04-18 10:56:09,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:09,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698570070] [2020-04-18 10:56:09,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:09,248 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 10:56:09,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698570070] [2020-04-18 10:56:09,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:09,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:56:09,249 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:09,250 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:09,256 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 10:56:09,256 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:09,295 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:56:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:56:09,297 INFO L87 Difference]: Start difference. First operand 295 states and 630 transitions. Second operand 5 states. [2020-04-18 10:56:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:09,366 INFO L93 Difference]: Finished difference Result 305 states and 638 transitions. [2020-04-18 10:56:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 638 transitions. [2020-04-18 10:56:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:09,368 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:56:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:09,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1392131675, now seen corresponding path program 6 times [2020-04-18 10:56:09,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:09,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175570355] [2020-04-18 10:56:09,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:09,403 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 10:56:09,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175570355] [2020-04-18 10:56:09,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:09,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:09,405 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:09,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:09,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 51 transitions. [2020-04-18 10:56:09,415 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:09,447 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:56:09,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:56:09,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:56:09,448 INFO L87 Difference]: Start difference. First operand 305 states and 638 transitions. Second operand 4 states. [2020-04-18 10:56:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:09,483 INFO L93 Difference]: Finished difference Result 432 states and 842 transitions. [2020-04-18 10:56:09,484 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 842 transitions. [2020-04-18 10:56:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:09,485 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:56:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash -940012763, now seen corresponding path program 7 times [2020-04-18 10:56:09,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:09,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219656509] [2020-04-18 10:56:09,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:09,525 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 10:56:09,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219656509] [2020-04-18 10:56:09,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:09,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:56:09,526 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:09,529 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:09,536 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 65 transitions. [2020-04-18 10:56:09,536 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:09,605 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:56:09,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:56:09,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:56:09,606 INFO L87 Difference]: Start difference. First operand 432 states and 842 transitions. Second operand 5 states. [2020-04-18 10:56:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:09,682 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 10:56:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 10:56:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:56:09,684 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:56:09,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:56:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1488530927, now seen corresponding path program 8 times [2020-04-18 10:56:09,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:56:09,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309326941] [2020-04-18 10:56:09,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:56:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:56:09,745 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 10:56:09,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309326941] [2020-04-18 10:56:09,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:56:09,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:56:09,746 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:56:09,747 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:56:09,753 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-04-18 10:56:09,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:56:09,815 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:56:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:56:09,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:56:09,816 INFO L87 Difference]: Start difference. First operand 541 states and 1034 transitions. Second operand 7 states. [2020-04-18 10:56:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:09,883 INFO L93 Difference]: Finished difference Result 541 states and 1034 transitions. [2020-04-18 10:56:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1034 transitions. [2020-04-18 10:56:09,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:09,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [384660109] [2020-04-18 10:56:09,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:56:09,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:56:09,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [384660109] [2020-04-18 10:56:09,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 10:56:09,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:56:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 10:56:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:56:09,887 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 16 states. [2020-04-18 10:56:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:56:10,768 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-04-18 10:56:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 10:56:10,769 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2020-04-18 10:56:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:56:10,769 INFO L225 Difference]: With dead ends: 133 [2020-04-18 10:56:10,769 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:56:10,772 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=515, Invalid=2907, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 10:56:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:56:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:56:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:56:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:56:10,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 10:56:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:56:10,774 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:56:10,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 10:56:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:56:10,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:56:10,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:56:10 BasicIcfg [2020-04-18 10:56:10,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:56:10,780 INFO L168 Benchmark]: Toolchain (without parser) took 7744.89 ms. Allocated memory was 138.9 MB in the beginning and 289.9 MB in the end (delta: 151.0 MB). Free memory was 101.8 MB in the beginning and 95.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 157.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,781 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 121.2 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.57 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 161.3 MB in the end (delta: -61.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.51 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 159.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,782 INFO L168 Benchmark]: Boogie Preprocessor took 27.46 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 157.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,783 INFO L168 Benchmark]: RCFGBuilder took 467.71 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 135.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,783 INFO L168 Benchmark]: TraceAbstraction took 6505.95 ms. Allocated memory was 203.4 MB in the beginning and 289.9 MB in the end (delta: 86.5 MB). Free memory was 134.8 MB in the beginning and 95.7 MB in the end (delta: 39.1 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2020-04-18 10:56:10,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 121.2 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.57 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 161.3 MB in the end (delta: -61.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.51 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 159.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.46 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 157.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.71 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 135.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6505.95 ms. Allocated memory was 203.4 MB in the beginning and 289.9 MB in the end (delta: 86.5 MB). Free memory was 134.8 MB in the beginning and 95.7 MB in the end (delta: 39.1 MB). Peak memory consumption was 125.6 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, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 676 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 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: 6.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 159 SDtfs, 258 SDslu, 443 SDs, 0 SdLazy, 404 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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...