/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/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:35:02,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:35:02,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:35:02,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:35:02,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:35:02,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:35:02,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:35:02,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:35:02,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:35:02,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:35:02,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:35:02,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:35:02,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:35:02,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:35:02,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:35:02,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:35:02,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:35:02,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:35:02,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:35:02,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:35:02,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:35:02,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:35:02,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:35:02,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:35:02,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:35:02,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:35:02,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:35:02,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:35:02,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:35:02,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:35:02,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:35:02,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:35:02,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:35:02,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:35:02,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:35:02,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:35:02,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:35:02,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:35:02,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:35:02,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:35:02,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:35:02,893 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 10:35:02,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:35:02,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:35:02,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:35:02,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:35:02,909 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:35:02,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:35:02,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:35:02,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:35:02,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:35:02,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:35:02,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:35:02,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:35:02,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:35:02,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:35:02,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:35:02,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:35:02,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:35:02,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:35:02,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:35:02,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:35:02,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:35:02,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:35:02,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:35:02,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:35:02,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:35:02,913 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:35:02,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:35:02,914 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:35:02,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:35:02,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:35:03,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:35:03,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:35:03,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:35:03,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:35:03,203 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:35:03,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 10:35:03,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2605417/afe9926ea55d47cdbfd1b3a7d37b680f/FLAGc2c88b342 [2020-04-18 10:35:03,825 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:35:03,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 10:35:03,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2605417/afe9926ea55d47cdbfd1b3a7d37b680f/FLAGc2c88b342 [2020-04-18 10:35:04,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2605417/afe9926ea55d47cdbfd1b3a7d37b680f [2020-04-18 10:35:04,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:35:04,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:35:04,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:35:04,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:35:04,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:35:04,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c8819c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04, skipping insertion in model container [2020-04-18 10:35:04,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:35:04,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:35:04,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:35:04,692 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:35:04,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:35:04,837 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:35:04,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04 WrapperNode [2020-04-18 10:35:04,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:35:04,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:35:04,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:35:04,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:35:04,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:35:04,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:35:04,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:35:04,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:35:04,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... [2020-04-18 10:35:04,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:35:04,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:35:04,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:35:04,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:35:04,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:35:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:35:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:35:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:35:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:35:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:35:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:35:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:35:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:35:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:35:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:35:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:35:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:35:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:35:04,978 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 10:35:05,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:35:05,375 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:35:05,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:35:05 BoogieIcfgContainer [2020-04-18 10:35:05,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:35:05,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:35:05,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:35:05,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:35:05,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:35:04" (1/3) ... [2020-04-18 10:35:05,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb7fd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:35:05, skipping insertion in model container [2020-04-18 10:35:05,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:35:04" (2/3) ... [2020-04-18 10:35:05,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb7fd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:35:05, skipping insertion in model container [2020-04-18 10:35:05,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:35:05" (3/3) ... [2020-04-18 10:35:05,388 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-04-18 10:35:05,396 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:35:05,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:35:05,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:35:05,404 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:35:05,427 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,427 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,428 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,428 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,429 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,429 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,429 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,430 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,430 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,430 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,431 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,431 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,431 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,431 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,432 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,432 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,432 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,433 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,437 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,437 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,438 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,438 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,444 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,444 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,445 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,445 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,448 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,448 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:35:05,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:35:05,485 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:35:05,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:35:05,486 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:35:05,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:35:05,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:35:05,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:35:05,486 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:35:05,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:35:05,503 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 10:35:05,505 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:35:05,548 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:35:05,549 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:35:05,554 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 54 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 10:35:05,557 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:35:05,577 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:35:05,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:35:05,579 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 54 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 10:35:05,581 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:35:05,582 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:35:07,361 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 10:35:07,362 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 10:35:07,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:35:07,399 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:35:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:35:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:35:07,411 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:07,412 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:07,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:07,422 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 10:35:07,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:07,434 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1037273624] [2020-04-18 10:35:07,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:07,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:35:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:35:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:35:07,470 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:07,471 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 2 times [2020-04-18 10:35:07,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:07,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846933816] [2020-04-18 10:35:07,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:07,798 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 10:35:07,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846933816] [2020-04-18 10:35:07,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:07,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:35:07,802 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:07,803 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:07,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:35:07,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:07,815 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:07,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:07,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:07,823 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:35:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:07,827 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:35:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:35:07,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:07,829 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1037273624] [2020-04-18 10:35:07,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:07,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:35:07,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1037273624] [2020-04-18 10:35:07,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:35:07,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:07,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:07,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:07,839 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:35:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:07,878 INFO L93 Difference]: Finished difference Result 282 states and 804 transitions. [2020-04-18 10:35:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:35:07,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:35:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:07,897 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:35:07,897 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:35:07,899 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 10:35:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:35:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:35:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:35:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 596 transitions. [2020-04-18 10:35:07,976 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 596 transitions. Word has length 8 [2020-04-18 10:35:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:07,977 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 596 transitions. [2020-04-18 10:35:07,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:35:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 596 transitions. [2020-04-18 10:35:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:35:07,979 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:07,979 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:07,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:07,980 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 1 times [2020-04-18 10:35:07,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:07,981 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1245813566] [2020-04-18 10:35:07,981 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:07,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 10:35:07,983 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 10:35:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:35:07,984 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -457725721, now seen corresponding path program 2 times [2020-04-18 10:35:07,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:07,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438289105] [2020-04-18 10:35:07,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,051 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 10:35:08,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438289105] [2020-04-18 10:35:08,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,052 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,056 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 10:35:08,057 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,067 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:08,068 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 10:35:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,078 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 10:35:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 10:35:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:35:08,080 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,080 INFO L82 PathProgramCache]: Analyzing trace with hash -409878001, now seen corresponding path program 3 times [2020-04-18 10:35:08,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554976944] [2020-04-18 10:35:08,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,173 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 10:35:08,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554976944] [2020-04-18 10:35:08,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,174 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,175 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,177 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 10:35:08,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,183 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,184 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 3 states. [2020-04-18 10:35:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,187 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 10:35:08,187 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 10:35:08,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:08,188 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1245813566] [2020-04-18 10:35:08,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:08,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:35:08,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1245813566] [2020-04-18 10:35:08,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:35:08,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:08,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:08,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,190 INFO L87 Difference]: Start difference. First operand 218 states and 596 transitions. Second operand 4 states. [2020-04-18 10:35:08,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,214 INFO L93 Difference]: Finished difference Result 250 states and 644 transitions. [2020-04-18 10:35:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:35:08,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 10:35:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:08,217 INFO L225 Difference]: With dead ends: 250 [2020-04-18 10:35:08,217 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:35:08,219 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:35:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2020-04-18 10:35:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 10:35:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 528 transitions. [2020-04-18 10:35:08,239 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 528 transitions. Word has length 10 [2020-04-18 10:35:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:08,239 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 528 transitions. [2020-04-18 10:35:08,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:35:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 528 transitions. [2020-04-18 10:35:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:35:08,241 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:08,241 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:08,241 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,242 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 10:35:08,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:08,242 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [189720613] [2020-04-18 10:35:08,243 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 10:35:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 10:35:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:35:08,244 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash 42723214, now seen corresponding path program 2 times [2020-04-18 10:35:08,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231169857] [2020-04-18 10:35:08,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,284 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 10:35:08,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231169857] [2020-04-18 10:35:08,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,287 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,289 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 10:35:08,290 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,293 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:08,294 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 10:35:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,301 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 10:35:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 10:35:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:35:08,302 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 3 times [2020-04-18 10:35:08,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212276415] [2020-04-18 10:35:08,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,387 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 10:35:08,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212276415] [2020-04-18 10:35:08,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:35:08,389 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 10:35:08,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,397 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 3 states. [2020-04-18 10:35:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,398 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 10:35:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 10:35:08,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:08,399 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [189720613] [2020-04-18 10:35:08,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:08,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:35:08,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [189720613] [2020-04-18 10:35:08,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:35:08,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,401 INFO L87 Difference]: Start difference. First operand 202 states and 528 transitions. Second operand 4 states. [2020-04-18 10:35:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,444 INFO L93 Difference]: Finished difference Result 278 states and 696 transitions. [2020-04-18 10:35:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:35:08,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 10:35:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:08,446 INFO L225 Difference]: With dead ends: 278 [2020-04-18 10:35:08,447 INFO L226 Difference]: Without dead ends: 152 [2020-04-18 10:35:08,447 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 10:35:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-04-18 10:35:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-04-18 10:35:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-04-18 10:35:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 370 transitions. [2020-04-18 10:35:08,459 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 370 transitions. Word has length 10 [2020-04-18 10:35:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:08,459 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 370 transitions. [2020-04-18 10:35:08,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:35:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 370 transitions. [2020-04-18 10:35:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:35:08,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:08,461 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:08,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 1 times [2020-04-18 10:35:08,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:08,462 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1938974304] [2020-04-18 10:35:08,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,464 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:35:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:35:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:35:08,465 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1703758399, now seen corresponding path program 2 times [2020-04-18 10:35:08,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866400033] [2020-04-18 10:35:08,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,516 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 10:35:08,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866400033] [2020-04-18 10:35:08,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,517 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,518 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,521 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 10:35:08,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,525 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:08,526 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 10:35:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,531 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2020-04-18 10:35:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2020-04-18 10:35:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:35:08,532 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 3 times [2020-04-18 10:35:08,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546209365] [2020-04-18 10:35:08,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,583 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 10:35:08,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546209365] [2020-04-18 10:35:08,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,585 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,586 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 30 transitions. [2020-04-18 10:35:08,588 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,594 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,596 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2020-04-18 10:35:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,613 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:35:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:35:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:35:08,614 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:35:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 4 times [2020-04-18 10:35:08,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143866663] [2020-04-18 10:35:08,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,646 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 10:35:08,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143866663] [2020-04-18 10:35:08,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:35:08,647 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,648 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,650 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 10:35:08,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,657 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:35:08,659 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 3 states. [2020-04-18 10:35:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,660 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:35:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:35:08,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:08,661 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1938974304] [2020-04-18 10:35:08,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:08,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:35:08,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1938974304] [2020-04-18 10:35:08,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:35:08,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:08,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:35:08,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:35:08,663 INFO L87 Difference]: Start difference. First operand 152 states and 370 transitions. Second operand 5 states. [2020-04-18 10:35:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,728 INFO L93 Difference]: Finished difference Result 150 states and 363 transitions. [2020-04-18 10:35:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:35:08,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 10:35:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:08,730 INFO L225 Difference]: With dead ends: 150 [2020-04-18 10:35:08,730 INFO L226 Difference]: Without dead ends: 150 [2020-04-18 10:35:08,731 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:35:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-18 10:35:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-18 10:35:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-18 10:35:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 363 transitions. [2020-04-18 10:35:08,740 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 363 transitions. Word has length 11 [2020-04-18 10:35:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:08,740 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 363 transitions. [2020-04-18 10:35:08,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:35:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 363 transitions. [2020-04-18 10:35:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:35:08,741 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:08,741 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:08,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1243290927, now seen corresponding path program 1 times [2020-04-18 10:35:08,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:08,742 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [989405700] [2020-04-18 10:35:08,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,744 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 108 transitions. [2020-04-18 10:35:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 10:35:08,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:35:08,745 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:08,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,746 INFO L82 PathProgramCache]: Analyzing trace with hash 131168283, now seen corresponding path program 2 times [2020-04-18 10:35:08,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959764237] [2020-04-18 10:35:08,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,768 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 10:35:08,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959764237] [2020-04-18 10:35:08,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,769 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,770 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,773 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 39 transitions. [2020-04-18 10:35:08,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,777 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:08,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:08,778 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-04-18 10:35:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,783 INFO L93 Difference]: Finished difference Result 54 states and 112 transitions. [2020-04-18 10:35:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 112 transitions. [2020-04-18 10:35:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:35:08,783 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,784 INFO L82 PathProgramCache]: Analyzing trace with hash 131136693, now seen corresponding path program 3 times [2020-04-18 10:35:08,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999691925] [2020-04-18 10:35:08,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,839 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 10:35:08,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999691925] [2020-04-18 10:35:08,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,840 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,842 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,847 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 65 transitions. [2020-04-18 10:35:08,847 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,852 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:35:08,853 INFO L87 Difference]: Start difference. First operand 54 states and 112 transitions. Second operand 4 states. [2020-04-18 10:35:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,870 INFO L93 Difference]: Finished difference Result 60 states and 119 transitions. [2020-04-18 10:35:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2020-04-18 10:35:08,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:35:08,871 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:35:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1243290927, now seen corresponding path program 4 times [2020-04-18 10:35:08,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:08,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297572830] [2020-04-18 10:35:08,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:08,899 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 10:35:08,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297572830] [2020-04-18 10:35:08,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:08,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:08,900 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:08,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,904 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 39 transitions. [2020-04-18 10:35:08,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:08,914 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:35:08,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:35:08,915 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand 4 states. [2020-04-18 10:35:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,926 INFO L93 Difference]: Finished difference Result 60 states and 119 transitions. [2020-04-18 10:35:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2020-04-18 10:35:08,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:08,927 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [989405700] [2020-04-18 10:35:08,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:08,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:35:08,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [989405700] [2020-04-18 10:35:08,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:35:08,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:35:08,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:35:08,928 INFO L87 Difference]: Start difference. First operand 150 states and 363 transitions. Second operand 5 states. [2020-04-18 10:35:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:08,983 INFO L93 Difference]: Finished difference Result 188 states and 448 transitions. [2020-04-18 10:35:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:35:08,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 10:35:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:08,987 INFO L225 Difference]: With dead ends: 188 [2020-04-18 10:35:08,987 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 10:35:08,987 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:35:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 10:35:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 10:35:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 10:35:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-18 10:35:08,993 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-04-18 10:35:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:08,993 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-18 10:35:08,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:35:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-18 10:35:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:35:08,994 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:08,994 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:08,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,995 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 1 times [2020-04-18 10:35:08,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:08,995 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [787123877] [2020-04-18 10:35:08,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:08,997 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 10:35:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 10:35:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:35:08,999 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:08,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1034198235, now seen corresponding path program 2 times [2020-04-18 10:35:09,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023543994] [2020-04-18 10:35:09,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,027 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 10:35:09,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023543994] [2020-04-18 10:35:09,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:09,028 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,029 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,032 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 46 transitions. [2020-04-18 10:35:09,033 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:09,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:09,038 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-04-18 10:35:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,049 INFO L93 Difference]: Finished difference Result 84 states and 183 transitions. [2020-04-18 10:35:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 183 transitions. [2020-04-18 10:35:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:35:09,050 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 3 times [2020-04-18 10:35:09,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679444380] [2020-04-18 10:35:09,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:35:09,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679444380] [2020-04-18 10:35:09,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:09,081 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,083 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,086 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 10:35:09,086 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,095 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:09,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:35:09,096 INFO L87 Difference]: Start difference. First operand 84 states and 183 transitions. Second operand 4 states. [2020-04-18 10:35:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,119 INFO L93 Difference]: Finished difference Result 105 states and 209 transitions. [2020-04-18 10:35:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 209 transitions. [2020-04-18 10:35:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:35:09,120 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:35:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 4 times [2020-04-18 10:35:09,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819856045] [2020-04-18 10:35:09,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,150 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 10:35:09,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819856045] [2020-04-18 10:35:09,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:09,151 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,153 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,157 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-04-18 10:35:09,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,168 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:09,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:35:09,169 INFO L87 Difference]: Start difference. First operand 105 states and 209 transitions. Second operand 4 states. [2020-04-18 10:35:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,199 INFO L93 Difference]: Finished difference Result 114 states and 215 transitions. [2020-04-18 10:35:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 215 transitions. [2020-04-18 10:35:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:35:09,200 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:35:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,200 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 5 times [2020-04-18 10:35:09,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669793353] [2020-04-18 10:35:09,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,266 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 10:35:09,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669793353] [2020-04-18 10:35:09,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:09,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,269 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,272 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 10:35:09,273 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,326 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:35:09,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:35:09,326 INFO L87 Difference]: Start difference. First operand 114 states and 215 transitions. Second operand 4 states. [2020-04-18 10:35:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,340 INFO L93 Difference]: Finished difference Result 114 states and 215 transitions. [2020-04-18 10:35:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 215 transitions. [2020-04-18 10:35:09,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:09,341 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [787123877] [2020-04-18 10:35:09,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:09,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:35:09,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [787123877] [2020-04-18 10:35:09,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:35:09,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:09,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:35:09,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:35:09,342 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 8 states. [2020-04-18 10:35:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,697 INFO L93 Difference]: Finished difference Result 159 states and 341 transitions. [2020-04-18 10:35:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 10:35:09,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 10:35:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:09,698 INFO L225 Difference]: With dead ends: 159 [2020-04-18 10:35:09,699 INFO L226 Difference]: Without dead ends: 59 [2020-04-18 10:35:09,699 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2020-04-18 10:35:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-18 10:35:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-18 10:35:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-18 10:35:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-18 10:35:09,705 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-18 10:35:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:09,705 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-18 10:35:09,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:35:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-18 10:35:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:35:09,706 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:09,706 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:09,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:09,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 10:35:09,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:09,707 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1170682512] [2020-04-18 10:35:09,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 10:35:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 10:35:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:35:09,715 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash 246315656, now seen corresponding path program 2 times [2020-04-18 10:35:09,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727146746] [2020-04-18 10:35:09,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,746 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 10:35:09,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727146746] [2020-04-18 10:35:09,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:09,747 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,751 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,754 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-04-18 10:35:09,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,758 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:09,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:09,759 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-04-18 10:35:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,768 INFO L93 Difference]: Finished difference Result 118 states and 270 transitions. [2020-04-18 10:35:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 270 transitions. [2020-04-18 10:35:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:35:09,769 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash 246284066, now seen corresponding path program 3 times [2020-04-18 10:35:09,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269835482] [2020-04-18 10:35:09,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,801 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 10:35:09,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269835482] [2020-04-18 10:35:09,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:35:09,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,807 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 10:35:09,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,817 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:09,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:35:09,818 INFO L87 Difference]: Start difference. First operand 118 states and 270 transitions. Second operand 4 states. [2020-04-18 10:35:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,841 INFO L93 Difference]: Finished difference Result 154 states and 327 transitions. [2020-04-18 10:35:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 327 transitions. [2020-04-18 10:35:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:35:09,842 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:35:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1444708712, now seen corresponding path program 4 times [2020-04-18 10:35:09,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705490580] [2020-04-18 10:35:09,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,868 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 10:35:09,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705490580] [2020-04-18 10:35:09,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:09,870 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,871 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,874 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 10:35:09,874 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,882 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:09,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:35:09,883 INFO L87 Difference]: Start difference. First operand 154 states and 327 transitions. Second operand 4 states. [2020-04-18 10:35:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:09,909 INFO L93 Difference]: Finished difference Result 172 states and 348 transitions. [2020-04-18 10:35:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 348 transitions. [2020-04-18 10:35:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:35:09,910 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:35:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 5 times [2020-04-18 10:35:09,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:09,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043238019] [2020-04-18 10:35:09,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:09,950 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 10:35:09,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043238019] [2020-04-18 10:35:09,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:09,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:09,951 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:09,952 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:09,955 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 10:35:09,956 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:09,985 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:09,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:35:09,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:35:09,986 INFO L87 Difference]: Start difference. First operand 172 states and 348 transitions. Second operand 5 states. [2020-04-18 10:35:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,023 INFO L93 Difference]: Finished difference Result 172 states and 348 transitions. [2020-04-18 10:35:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 348 transitions. [2020-04-18 10:35:10,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:10,024 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1170682512] [2020-04-18 10:35:10,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:10,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:35:10,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1170682512] [2020-04-18 10:35:10,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:35:10,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:35:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:35:10,026 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 9 states. [2020-04-18 10:35:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,267 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-18 10:35:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:35:10,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 10:35:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:10,268 INFO L225 Difference]: With dead ends: 60 [2020-04-18 10:35:10,269 INFO L226 Difference]: Without dead ends: 45 [2020-04-18 10:35:10,269 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:35:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-18 10:35:10,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-18 10:35:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-18 10:35:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-18 10:35:10,271 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-18 10:35:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:10,272 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-18 10:35:10,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:35:10,272 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-18 10:35:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:35:10,272 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:10,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:10,273 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 10:35:10,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:10,274 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [882552098] [2020-04-18 10:35:10,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,276 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 10:35:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 10:35:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:35:10,278 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash -954149052, now seen corresponding path program 2 times [2020-04-18 10:35:10,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049987366] [2020-04-18 10:35:10,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:10,301 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 10:35:10,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049987366] [2020-04-18 10:35:10,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:10,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:10,302 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:10,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,307 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 43 transitions. [2020-04-18 10:35:10,307 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:10,311 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:10,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:10,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:10,312 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-04-18 10:35:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,320 INFO L93 Difference]: Finished difference Result 158 states and 380 transitions. [2020-04-18 10:35:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 380 transitions. [2020-04-18 10:35:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:35:10,321 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,321 INFO L82 PathProgramCache]: Analyzing trace with hash -955128342, now seen corresponding path program 3 times [2020-04-18 10:35:10,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47511384] [2020-04-18 10:35:10,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:10,349 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 10:35:10,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47511384] [2020-04-18 10:35:10,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:10,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:10,350 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:10,352 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,356 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 53 transitions. [2020-04-18 10:35:10,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:10,366 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:10,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:10,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:35:10,367 INFO L87 Difference]: Start difference. First operand 158 states and 380 transitions. Second operand 4 states. [2020-04-18 10:35:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,387 INFO L93 Difference]: Finished difference Result 214 states and 482 transitions. [2020-04-18 10:35:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 482 transitions. [2020-04-18 10:35:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:35:10,388 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:35:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1836297316, now seen corresponding path program 4 times [2020-04-18 10:35:10,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138704379] [2020-04-18 10:35:10,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:10,417 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 10:35:10,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138704379] [2020-04-18 10:35:10,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:10,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:35:10,418 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:10,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 10:35:10,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:10,449 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:10,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:10,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:35:10,449 INFO L87 Difference]: Start difference. First operand 214 states and 482 transitions. Second operand 4 states. [2020-04-18 10:35:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,468 INFO L93 Difference]: Finished difference Result 246 states and 532 transitions. [2020-04-18 10:35:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 532 transitions. [2020-04-18 10:35:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:35:10,469 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:35:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1553257578, now seen corresponding path program 5 times [2020-04-18 10:35:10,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263114073] [2020-04-18 10:35:10,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:10,506 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 10:35:10,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263114073] [2020-04-18 10:35:10,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:10,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:35:10,508 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:10,509 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,512 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 43 transitions. [2020-04-18 10:35:10,513 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:10,543 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:10,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:35:10,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:35:10,543 INFO L87 Difference]: Start difference. First operand 246 states and 532 transitions. Second operand 5 states. [2020-04-18 10:35:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,602 INFO L93 Difference]: Finished difference Result 261 states and 544 transitions. [2020-04-18 10:35:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 544 transitions. [2020-04-18 10:35:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:35:10,603 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:35:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 6 times [2020-04-18 10:35:10,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568566015] [2020-04-18 10:35:10,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:10,658 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 10:35:10,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568566015] [2020-04-18 10:35:10,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:10,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:35:10,660 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:10,661 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-04-18 10:35:10,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:10,686 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:35:10,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:35:10,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:35:10,687 INFO L87 Difference]: Start difference. First operand 261 states and 544 transitions. Second operand 6 states. [2020-04-18 10:35:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,740 INFO L93 Difference]: Finished difference Result 261 states and 544 transitions. [2020-04-18 10:35:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 544 transitions. [2020-04-18 10:35:10,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:10,742 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [882552098] [2020-04-18 10:35:10,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:10,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:35:10,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [882552098] [2020-04-18 10:35:10,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:35:10,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:10,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:35:10,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:35:10,744 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 10 states. [2020-04-18 10:35:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,897 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-18 10:35:10,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 10:35:10,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 10:35:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:10,898 INFO L225 Difference]: With dead ends: 42 [2020-04-18 10:35:10,898 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 10:35:10,899 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:35:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 10:35:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 10:35:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 10:35:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 10:35:10,901 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 10:35:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:10,902 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 10:35:10,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:35:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 10:35:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:10,902 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:35:10,902 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:35:10,903 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:35:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,903 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-18 10:35:10,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:35:10,903 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1644506974] [2020-04-18 10:35:10,904 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,909 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 10:35:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:35:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:10,913 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:35:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,914 INFO L82 PathProgramCache]: Analyzing trace with hash 465346242, now seen corresponding path program 2 times [2020-04-18 10:35:10,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413832929] [2020-04-18 10:35:10,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:10,944 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 10:35:10,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413832929] [2020-04-18 10:35:10,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:10,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:10,945 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:10,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:10,952 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 94 transitions. [2020-04-18 10:35:10,952 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:10,959 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:35:10,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:10,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:35:10,959 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:35:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:10,970 INFO L93 Difference]: Finished difference Result 314 states and 836 transitions. [2020-04-18 10:35:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 836 transitions. [2020-04-18 10:35:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:10,972 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:35:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash 465289512, now seen corresponding path program 3 times [2020-04-18 10:35:10,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:10,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313235173] [2020-04-18 10:35:10,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:11,007 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 10:35:11,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313235173] [2020-04-18 10:35:11,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:11,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:11,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:11,011 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:11,017 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 103 transitions. [2020-04-18 10:35:11,017 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:11,027 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:11,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:35:11,028 INFO L87 Difference]: Start difference. First operand 314 states and 836 transitions. Second operand 4 states. [2020-04-18 10:35:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:11,048 INFO L93 Difference]: Finished difference Result 482 states and 1254 transitions. [2020-04-18 10:35:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1254 transitions. [2020-04-18 10:35:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:11,050 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:35:11,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:11,050 INFO L82 PathProgramCache]: Analyzing trace with hash -779092126, now seen corresponding path program 4 times [2020-04-18 10:35:11,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:11,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228878609] [2020-04-18 10:35:11,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:11,076 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 10:35:11,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228878609] [2020-04-18 10:35:11,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:11,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:35:11,077 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:11,078 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:11,082 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 61 transitions. [2020-04-18 10:35:11,082 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:11,090 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:11,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:35:11,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:35:11,091 INFO L87 Difference]: Start difference. First operand 482 states and 1254 transitions. Second operand 4 states. [2020-04-18 10:35:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:11,118 INFO L93 Difference]: Finished difference Result 578 states and 1468 transitions. [2020-04-18 10:35:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1468 transitions. [2020-04-18 10:35:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:11,120 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:35:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:11,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1970250456, now seen corresponding path program 5 times [2020-04-18 10:35:11,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:11,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231423866] [2020-04-18 10:35:11,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:11,147 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 10:35:11,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231423866] [2020-04-18 10:35:11,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:11,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:35:11,148 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:11,149 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:11,153 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 49 transitions. [2020-04-18 10:35:11,153 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:11,166 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:35:11,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:35:11,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:35:11,167 INFO L87 Difference]: Start difference. First operand 578 states and 1468 transitions. Second operand 3 states. [2020-04-18 10:35:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:11,177 INFO L93 Difference]: Finished difference Result 850 states and 2040 transitions. [2020-04-18 10:35:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2040 transitions. [2020-04-18 10:35:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:11,180 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:35:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1968135636, now seen corresponding path program 6 times [2020-04-18 10:35:11,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:11,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256341876] [2020-04-18 10:35:11,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:11,231 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 10:35:11,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256341876] [2020-04-18 10:35:11,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:11,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:35:11,232 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:11,233 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:11,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 10:35:11,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:11,278 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:35:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:35:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:35:11,279 INFO L87 Difference]: Start difference. First operand 850 states and 2040 transitions. Second operand 5 states. [2020-04-18 10:35:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:11,404 INFO L93 Difference]: Finished difference Result 975 states and 2195 transitions. [2020-04-18 10:35:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2195 transitions. [2020-04-18 10:35:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:35:11,407 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:35:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:35:11,407 INFO L82 PathProgramCache]: Analyzing trace with hash 446231490, now seen corresponding path program 7 times [2020-04-18 10:35:11,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:35:11,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540109051] [2020-04-18 10:35:11,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:35:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:35:11,456 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 10:35:11,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540109051] [2020-04-18 10:35:11,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:35:11,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:35:11,458 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:35:11,460 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:35:11,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-04-18 10:35:11,465 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:35:11,481 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:35:11,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:35:11,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:35:11,482 INFO L87 Difference]: Start difference. First operand 975 states and 2195 transitions. Second operand 6 states. [2020-04-18 10:35:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:11,583 INFO L93 Difference]: Finished difference Result 992 states and 2204 transitions. [2020-04-18 10:35:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 2204 transitions. [2020-04-18 10:35:11,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:11,586 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1644506974] [2020-04-18 10:35:11,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:35:11,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:35:11,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1644506974] [2020-04-18 10:35:11,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 10:35:11,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:35:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 10:35:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:35:11,589 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 11 states. [2020-04-18 10:35:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:35:11,738 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 10:35:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:35:11,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-04-18 10:35:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:35:11,738 INFO L225 Difference]: With dead ends: 35 [2020-04-18 10:35:11,739 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:35:11,739 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2020-04-18 10:35:11,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:35:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:35:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:35:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:35:11,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 10:35:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:35:11,740 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:35:11,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 10:35:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:35:11,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:35:11,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:35:11 BasicIcfg [2020-04-18 10:35:11,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:35:11,756 INFO L168 Benchmark]: Toolchain (without parser) took 7667.86 ms. Allocated memory was 145.2 MB in the beginning and 315.1 MB in the end (delta: 169.9 MB). Free memory was 101.8 MB in the beginning and 226.7 MB in the end (delta: -125.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:35:11,757 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:35:11,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.98 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.9 MB in the beginning and 157.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 10:35:11,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.19 ms. Allocated memory is still 202.4 MB. Free memory was 157.5 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:35:11,763 INFO L168 Benchmark]: Boogie Preprocessor took 24.41 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 153.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:35:11,764 INFO L168 Benchmark]: RCFGBuilder took 463.59 ms. Allocated memory is still 202.4 MB. Free memory was 153.6 MB in the beginning and 131.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:35:11,765 INFO L168 Benchmark]: TraceAbstraction took 6372.32 ms. Allocated memory was 202.4 MB in the beginning and 315.1 MB in the end (delta: 112.7 MB). Free memory was 130.9 MB in the beginning and 226.7 MB in the end (delta: -95.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:35:11,767 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.98 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.9 MB in the beginning and 157.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.19 ms. Allocated memory is still 202.4 MB. Free memory was 157.5 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.41 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 153.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.59 ms. Allocated memory is still 202.4 MB. Free memory was 153.6 MB in the beginning and 131.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6372.32 ms. Allocated memory was 202.4 MB in the beginning and 315.1 MB in the end (delta: 112.7 MB). Free memory was 130.9 MB in the beginning and 226.7 MB in the end (delta: -95.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 154 SDtfs, 166 SDslu, 330 SDs, 0 SdLazy, 407 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 481 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.0s 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, 9 MinimizatonAttempts, 16 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...